task_name
string | rows
int64 | cols
int64 | rules
string | visual_elements
string | initial_board
string | solution
string | initial_observation
string | solution_reference
string | description
string | title
string | hint
string |
|---|---|---|---|---|---|---|---|---|---|---|---|
sudoku_normal_hard_0
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
7..6....8...9..5....6.4..3.239168754174395682...7..391.2..3.4....1..9...8....1..5
|
745613928312987546986542137239168754174395682658724391527836419461259873893471265
|
7 . . 6 . . . . 8
. . . 9 . . 5 . .
. . 6 . 4 . . 3 .
2 3 9 1 6 8 7 5 4
1 7 4 3 9 5 6 8 2
. . . 7 . . 3 9 1
. 2 . . 3 . 4 . .
. . 1 . . 9 . . .
8 . . . . 1 . . 5
|
7 4 5 6 1 3 9 2 8
3 1 2 9 8 7 5 4 6
9 8 6 5 4 2 1 3 7
2 3 9 1 6 8 7 5 4
1 7 4 3 9 5 6 8 2
6 5 8 7 2 4 3 9 1
5 2 7 8 3 6 4 1 9
4 6 1 2 5 9 8 7 3
8 9 3 4 7 1 2 6 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2212m
|
745613928312987546986542137239168754174395682658724391527836419461259873893471265 #1 Easy (268)
Naked Single: r4c7=7
Naked Single: r4c9=4
Naked Single: r4c8=5
Naked Single: r4c3=9
Naked Single: r4c4=1
Full House: r4c5=6
Hidden Single: r5c4=3
Naked Single: r5c9=2
Naked Single: r5c6=5
Naked Single: r5c8=8
Full House: r6c7=3
Naked Single: r5c1=1
Naked Single: r5c5=9
Full House: r5c2=7
Naked Single: r6c5=2
Full House: r6c6=4
Naked Single: r9c5=7
Naked Single: r7c6=6
Naked Single: r9c3=3
Hidden Single: r7c8=1
Hidden Single: r8c9=3
Hidden Single: r8c7=8
Naked Single: r8c5=5
Naked Single: r1c5=1
Full House: r2c5=8
Naked Single: r7c4=8
Naked Single: r2c3=2
Naked Single: r1c3=5
Naked Single: r3c1=9
Naked Single: r6c3=8
Full House: r7c3=7
Naked Single: r1c2=4
Naked Single: r3c9=7
Naked Single: r7c1=5
Full House: r7c9=9
Full House: r2c9=6
Naked Single: r1c8=2
Naked Single: r2c1=3
Naked Single: r2c2=1
Full House: r3c2=8
Naked Single: r8c2=6
Naked Single: r3c6=2
Naked Single: r6c1=6
Full House: r6c2=5
Full House: r8c1=4
Full House: r9c2=9
Naked Single: r9c7=2
Naked Single: r2c8=4
Full House: r2c6=7
Full House: r1c6=3
Full House: r1c7=9
Full House: r3c7=1
Full House: r3c4=5
Naked Single: r9c8=6
Full House: r8c8=7
Full House: r8c4=2
Full House: r9c4=4
|
sudoku_normal_extremely_hard_0
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
7..6....8...9..5....6.4..3.23...8.....4...6.....7...91.2..3.4....1..9...8....1..5
|
745613928312987546986542137239168754174395682658724391527836419461259873893471265
|
7 . . 6 . . . . 8
. . . 9 . . 5 . .
. . 6 . 4 . . 3 .
2 3 . . . 8 . . .
. . 4 . . . 6 . .
. . . 7 . . . 9 1
. 2 . . 3 . 4 . .
. . 1 . . 9 . . .
8 . . . . 1 . . 5
|
7 4 5 6 1 3 9 2 8
3 1 2 9 8 7 5 4 6
9 8 6 5 4 2 1 3 7
2 3 9 1 6 8 7 5 4
1 7 4 3 9 5 6 8 2
6 5 8 7 2 4 3 9 1
5 2 7 8 3 6 4 1 9
4 6 1 2 5 9 8 7 3
8 9 3 4 7 1 2 6 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2212m
|
745613928312987546986542137239168754174395682658724391527836419461259873893471265 #1 Easy (268)
Naked Single: r4c7=7
Naked Single: r4c9=4
Naked Single: r4c8=5
Naked Single: r4c3=9
Naked Single: r4c4=1
Full House: r4c5=6
Hidden Single: r5c4=3
Naked Single: r5c9=2
Naked Single: r5c6=5
Naked Single: r5c8=8
Full House: r6c7=3
Naked Single: r5c1=1
Naked Single: r5c5=9
Full House: r5c2=7
Naked Single: r6c5=2
Full House: r6c6=4
Naked Single: r9c5=7
Naked Single: r7c6=6
Naked Single: r9c3=3
Hidden Single: r7c8=1
Hidden Single: r8c9=3
Hidden Single: r8c7=8
Naked Single: r8c5=5
Naked Single: r1c5=1
Full House: r2c5=8
Naked Single: r7c4=8
Naked Single: r2c3=2
Naked Single: r1c3=5
Naked Single: r3c1=9
Naked Single: r6c3=8
Full House: r7c3=7
Naked Single: r1c2=4
Naked Single: r3c9=7
Naked Single: r7c1=5
Full House: r7c9=9
Full House: r2c9=6
Naked Single: r1c8=2
Naked Single: r2c1=3
Naked Single: r2c2=1
Full House: r3c2=8
Naked Single: r8c2=6
Naked Single: r3c6=2
Naked Single: r6c1=6
Full House: r6c2=5
Full House: r8c1=4
Full House: r9c2=9
Naked Single: r9c7=2
Naked Single: r2c8=4
Full House: r2c6=7
Full House: r1c6=3
Full House: r1c7=9
Full House: r3c7=1
Full House: r3c4=5
Naked Single: r9c8=6
Full House: r8c8=7
Full House: r8c4=2
Full House: r9c4=4
|
sudoku_normal_hard_1
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.438.5....7.3.4.2.8..7624...1.6.8..5..8.2.6.436.9.7.1.4.6.7...9.2.5.9.4....4..1..
|
243815967675394821891762453912648735758123694364957218436271589127589346589436172
|
. 4 3 8 . 5 . . .
. 7 . 3 . 4 . 2 .
8 . . 7 6 2 4 . .
. 1 . 6 . 8 . . 5
. . 8 . 2 . 6 . 4
3 6 . 9 . 7 . 1 .
4 . 6 . 7 . . . 9
. 2 . 5 . 9 . 4 .
. . . 4 . . 1 . .
|
2 4 3 8 1 5 9 6 7
6 7 5 3 9 4 8 2 1
8 9 1 7 6 2 4 5 3
9 1 2 6 4 8 7 3 5
7 5 8 1 2 3 6 9 4
3 6 4 9 5 7 2 1 8
4 3 6 2 7 1 5 8 9
1 2 7 5 8 9 3 4 6
5 8 9 4 3 6 1 7 2
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2311h1
|
243815967675394821891762453912648735758123694364957218436271589127589346589436172 #1 Medium (464)
Hidden Pair: 3,8 in r79c2 => r7c2<>4, r79c2<>5, r9c2<>9
Hidden Single: r7c1=4
Locked Candidates Type 1 (Pointing): 1 in b7 => r8c45<>1
Locked Candidates Type 2 (Claiming): 1 in c5 => r13c4,r23c6<>1
Naked Single: r2c6=4
Hidden Single: r1c2=4
Hidden Single: r5c9=4
Hidden Single: r6c2=6
Naked Single: r6c6=7
Naked Single: r3c6=2
Naked Single: r4c4=6
Naked Single: r3c4=7
Naked Single: r1c4=8
Naked Single: r8c4=5
Naked Single: r5c4=1
Full House: r7c4=2
Naked Single: r5c6=3
Naked Single: r4c5=4
Full House: r6c5=5
Naked Single: r7c6=1
Full House: r9c6=6
Hidden Single: r1c1=2
Hidden Single: r9c9=2
Naked Single: r6c9=8
Naked Single: r6c7=2
Full House: r6c3=4
Hidden Single: r8c9=6
Naked Single: r2c9=1
Naked Single: r1c9=7
Full House: r3c9=3
Naked Single: r2c5=9
Full House: r1c5=1
Naked Single: r1c7=9
Full House: r1c8=6
Naked Single: r2c3=5
Naked Single: r3c8=5
Full House: r2c7=8
Full House: r2c1=6
Naked Single: r3c2=9
Full House: r3c3=1
Naked Single: r5c2=5
Naked Single: r8c3=7
Naked Single: r8c1=1
Naked Single: r8c7=3
Full House: r8c5=8
Full House: r9c5=3
Naked Single: r9c3=9
Full House: r4c3=2
Naked Single: r4c7=7
Full House: r7c7=5
Naked Single: r7c8=8
Full House: r7c2=3
Full House: r9c2=8
Full House: r9c1=5
Full House: r9c8=7
Naked Single: r4c1=9
Full House: r4c8=3
Full House: r5c8=9
Full House: r5c1=7
|
sudoku_normal_extremely_hard_1
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..3..5....7.3...2.8...6.4...1...8..5..8.2.6..3..9...1...6.7...9.2...9.4....4..1..
|
243815967675394821891762453912648735758123694364957218436271589127589346589436172
|
. . 3 . . 5 . . .
. 7 . 3 . . . 2 .
8 . . . 6 . 4 . .
. 1 . . . 8 . . 5
. . 8 . 2 . 6 . .
3 . . 9 . . . 1 .
. . 6 . 7 . . . 9
. 2 . . . 9 . 4 .
. . . 4 . . 1 . .
|
2 4 3 8 1 5 9 6 7
6 7 5 3 9 4 8 2 1
8 9 1 7 6 2 4 5 3
9 1 2 6 4 8 7 3 5
7 5 8 1 2 3 6 9 4
3 6 4 9 5 7 2 1 8
4 3 6 2 7 1 5 8 9
1 2 7 5 8 9 3 4 6
5 8 9 4 3 6 1 7 2
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2311h1
|
243815967675394821891762453912648735758123694364957218436271589127589346589436172 #1 Medium (464)
Hidden Pair: 3,8 in r79c2 => r7c2<>4, r79c2<>5, r9c2<>9
Hidden Single: r7c1=4
Locked Candidates Type 1 (Pointing): 1 in b7 => r8c45<>1
Locked Candidates Type 2 (Claiming): 1 in c5 => r13c4,r23c6<>1
Naked Single: r2c6=4
Hidden Single: r1c2=4
Hidden Single: r5c9=4
Hidden Single: r6c2=6
Naked Single: r6c6=7
Naked Single: r3c6=2
Naked Single: r4c4=6
Naked Single: r3c4=7
Naked Single: r1c4=8
Naked Single: r8c4=5
Naked Single: r5c4=1
Full House: r7c4=2
Naked Single: r5c6=3
Naked Single: r4c5=4
Full House: r6c5=5
Naked Single: r7c6=1
Full House: r9c6=6
Hidden Single: r1c1=2
Hidden Single: r9c9=2
Naked Single: r6c9=8
Naked Single: r6c7=2
Full House: r6c3=4
Hidden Single: r8c9=6
Naked Single: r2c9=1
Naked Single: r1c9=7
Full House: r3c9=3
Naked Single: r2c5=9
Full House: r1c5=1
Naked Single: r1c7=9
Full House: r1c8=6
Naked Single: r2c3=5
Naked Single: r3c8=5
Full House: r2c7=8
Full House: r2c1=6
Naked Single: r3c2=9
Full House: r3c3=1
Naked Single: r5c2=5
Naked Single: r8c3=7
Naked Single: r8c1=1
Naked Single: r8c7=3
Full House: r8c5=8
Full House: r9c5=3
Naked Single: r9c3=9
Full House: r4c3=2
Naked Single: r4c7=7
Full House: r7c7=5
Naked Single: r7c8=8
Full House: r7c2=3
Full House: r9c2=8
Full House: r9c1=5
Full House: r9c8=7
Naked Single: r4c1=9
Full House: r4c8=3
Full House: r5c8=9
Full House: r5c1=7
|
sudoku_normal_hard_2
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
893.....55124....3764385291.71..2..4..6.7.1.2...6..387..7.69..8.....1..91......36
|
893127645512496873764385291371852964486973152925614387237569418648731529159248736
|
8 9 3 . . . . . 5
5 1 2 4 . . . . 3
7 6 4 3 8 5 2 9 1
. 7 1 . . 2 . . 4
. . 6 . 7 . 1 . 2
. . . 6 . . 3 8 7
. . 7 . 6 9 . . 8
. . . . . 1 . . 9
1 . . . . . . 3 6
|
8 9 3 1 2 7 6 4 5
5 1 2 4 9 6 8 7 3
7 6 4 3 8 5 2 9 1
3 7 1 8 5 2 9 6 4
4 8 6 9 7 3 1 5 2
9 2 5 6 1 4 3 8 7
2 3 7 5 6 9 4 1 8
6 4 8 7 3 1 5 2 9
1 5 9 2 4 8 7 3 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2210e
|
893127645512496873764385291371852964486973152925614387237569418648731529159248736 #1 Easy (224)
Naked Single: r3c3=4
Naked Single: r4c9=4
Naked Single: r5c9=2
Naked Single: r6c9=7
Naked Single: r3c9=1
Naked Single: r3c2=6
Naked Single: r7c9=8
Full House: r2c9=3
Naked Single: r3c1=7
Naked Single: r2c3=2
Naked Single: r3c6=5
Full House: r3c8=9
Naked Single: r1c3=3
Full House: r2c2=1
Naked Single: r6c6=4
Naked Single: r5c8=5
Naked Single: r2c5=9
Naked Single: r4c8=6
Full House: r4c7=9
Naked Single: r2c8=7
Naked Single: r4c1=3
Naked Single: r1c8=4
Naked Single: r2c6=6
Full House: r2c7=8
Full House: r1c7=6
Naked Single: r4c5=5
Full House: r4c4=8
Naked Single: r8c8=2
Full House: r7c8=1
Naked Single: r1c6=7
Naked Single: r6c5=1
Naked Single: r5c4=9
Full House: r5c6=3
Full House: r9c6=8
Naked Single: r1c5=2
Full House: r1c4=1
Naked Single: r5c1=4
Full House: r5c2=8
Naked Single: r9c5=4
Full House: r8c5=3
Naked Single: r7c1=2
Naked Single: r8c1=6
Full House: r6c1=9
Naked Single: r7c4=5
Naked Single: r9c2=5
Naked Single: r6c3=5
Full House: r6c2=2
Naked Single: r7c7=4
Full House: r7c2=3
Full House: r8c2=4
Naked Single: r8c4=7
Full House: r9c4=2
Naked Single: r8c3=8
Full House: r9c3=9
Full House: r9c7=7
Full House: r8c7=5
|
sudoku_normal_extremely_hard_2
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
89......55..4........38.2...71..2.....6.7.1.....6..38...7.69........1..91......36
|
893127645512496873764385291371852964486973152925614387237569418648731529159248736
|
8 9 . . . . . . 5
5 . . 4 . . . . .
. . . 3 8 . 2 . .
. 7 1 . . 2 . . .
. . 6 . 7 . 1 . .
. . . 6 . . 3 8 .
. . 7 . 6 9 . . .
. . . . . 1 . . 9
1 . . . . . . 3 6
|
8 9 3 1 2 7 6 4 5
5 1 2 4 9 6 8 7 3
7 6 4 3 8 5 2 9 1
3 7 1 8 5 2 9 6 4
4 8 6 9 7 3 1 5 2
9 2 5 6 1 4 3 8 7
2 3 7 5 6 9 4 1 8
6 4 8 7 3 1 5 2 9
1 5 9 2 4 8 7 3 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2210e
|
893127645512496873764385291371852964486973152925614387237569418648731529159248736 #1 Easy (224)
Naked Single: r3c3=4
Naked Single: r4c9=4
Naked Single: r5c9=2
Naked Single: r6c9=7
Naked Single: r3c9=1
Naked Single: r3c2=6
Naked Single: r7c9=8
Full House: r2c9=3
Naked Single: r3c1=7
Naked Single: r2c3=2
Naked Single: r3c6=5
Full House: r3c8=9
Naked Single: r1c3=3
Full House: r2c2=1
Naked Single: r6c6=4
Naked Single: r5c8=5
Naked Single: r2c5=9
Naked Single: r4c8=6
Full House: r4c7=9
Naked Single: r2c8=7
Naked Single: r4c1=3
Naked Single: r1c8=4
Naked Single: r2c6=6
Full House: r2c7=8
Full House: r1c7=6
Naked Single: r4c5=5
Full House: r4c4=8
Naked Single: r8c8=2
Full House: r7c8=1
Naked Single: r1c6=7
Naked Single: r6c5=1
Naked Single: r5c4=9
Full House: r5c6=3
Full House: r9c6=8
Naked Single: r1c5=2
Full House: r1c4=1
Naked Single: r5c1=4
Full House: r5c2=8
Naked Single: r9c5=4
Full House: r8c5=3
Naked Single: r7c1=2
Naked Single: r8c1=6
Full House: r6c1=9
Naked Single: r7c4=5
Naked Single: r9c2=5
Naked Single: r6c3=5
Full House: r6c2=2
Naked Single: r7c7=4
Full House: r7c2=3
Full House: r8c2=4
Naked Single: r8c4=7
Full House: r9c4=2
Naked Single: r8c3=8
Full House: r9c3=9
Full House: r9c7=7
Full House: r8c7=5
|
sudoku_normal_hard_3
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.6.98..171....2..3..75..9.42....91.5.3.....72..12...98..41987.69..32...1.1..4..59
|
462983517195472683387516924248739165639851472751264398524198736976325841813647259
|
. 6 . 9 8 . . 1 7
1 . . . . 2 . . 3
. . 7 5 . . 9 . 4
2 . . . . 9 1 . 5
. 3 . . . . . 7 2
. . 1 2 . . . 9 8
. . 4 1 9 8 7 . 6
9 . . 3 2 . . . 1
. 1 . . 4 . . 5 9
|
4 6 2 9 8 3 5 1 7
1 9 5 4 7 2 6 8 3
3 8 7 5 1 6 9 2 4
2 4 8 7 3 9 1 6 5
6 3 9 8 5 1 4 7 2
7 5 1 2 6 4 3 9 8
5 2 4 1 9 8 7 3 6
9 7 6 3 2 5 8 4 1
8 1 3 6 4 7 2 5 9
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2403h3
|
462983517195472683387516924248739165639851472751264398524198736976325841813647259 #1 Hard (590)
Hidden Single: r1c9=7
Locked Candidates Type 1 (Pointing): 5 in b3 => r56c7<>5
Swordfish: 2 r159 c379 => r37c9,r8c37<>2
Hidden Pair: 2,3 in r19c3 => r1c3<>5, r1c3<>9, r9c3<>6, r9c3<>8
Hidden Single: r1c4=9
Hidden Single: r7c5=9
Naked Single: r7c9=6
Naked Single: r3c9=4
Naked Single: r7c4=1
Naked Single: r4c9=5
Hidden Single: r9c9=9
Full House: r5c9=2
Hidden Single: r6c8=9
Hidden Single: r8c5=2
Hidden Single: r5c3=9
Hidden Single: r2c2=9
Hidden Single: r8c6=5
Hidden Single: r2c4=4
Naked Single: r1c6=3
Naked Single: r1c3=2
Naked Single: r1c7=5
Full House: r1c1=4
Naked Single: r3c2=8
Naked Single: r9c3=3
Naked Single: r2c3=5
Full House: r3c1=3
Naked Single: r8c2=7
Naked Single: r7c1=5
Naked Single: r4c2=4
Naked Single: r7c2=2
Full House: r6c2=5
Full House: r7c8=3
Naked Single: r4c8=6
Naked Single: r2c8=8
Naked Single: r3c8=2
Full House: r2c7=6
Full House: r8c8=4
Full House: r2c5=7
Naked Single: r4c3=8
Full House: r8c3=6
Full House: r8c7=8
Full House: r9c1=8
Full House: r9c7=2
Naked Single: r5c7=4
Full House: r6c7=3
Naked Single: r4c5=3
Full House: r4c4=7
Naked Single: r5c1=6
Full House: r6c1=7
Naked Single: r6c5=6
Full House: r6c6=4
Naked Single: r9c4=6
Full House: r5c4=8
Full House: r9c6=7
Naked Single: r5c6=1
Full House: r3c6=6
Full House: r3c5=1
Full House: r5c5=5
|
sudoku_normal_extremely_hard_3
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.6..8..1.1....2..3..75..9..2....91...3.....7...12....8..4..87..9..3....1.1..4..5.
|
462983517195472683387516924248739165639851472751264398524198736976325841813647259
|
. 6 . . 8 . . 1 .
1 . . . . 2 . . 3
. . 7 5 . . 9 . .
2 . . . . 9 1 . .
. 3 . . . . . 7 .
. . 1 2 . . . . 8
. . 4 . . 8 7 . .
9 . . 3 . . . . 1
. 1 . . 4 . . 5 .
|
4 6 2 9 8 3 5 1 7
1 9 5 4 7 2 6 8 3
3 8 7 5 1 6 9 2 4
2 4 8 7 3 9 1 6 5
6 3 9 8 5 1 4 7 2
7 5 1 2 6 4 3 9 8
5 2 4 1 9 8 7 3 6
9 7 6 3 2 5 8 4 1
8 1 3 6 4 7 2 5 9
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2403h3
|
462983517195472683387516924248739165639851472751264398524198736976325841813647259 #1 Hard (590)
Hidden Single: r1c9=7
Locked Candidates Type 1 (Pointing): 5 in b3 => r56c7<>5
Swordfish: 2 r159 c379 => r37c9,r8c37<>2
Hidden Pair: 2,3 in r19c3 => r1c3<>5, r1c3<>9, r9c3<>6, r9c3<>8
Hidden Single: r1c4=9
Hidden Single: r7c5=9
Naked Single: r7c9=6
Naked Single: r3c9=4
Naked Single: r7c4=1
Naked Single: r4c9=5
Hidden Single: r9c9=9
Full House: r5c9=2
Hidden Single: r6c8=9
Hidden Single: r8c5=2
Hidden Single: r5c3=9
Hidden Single: r2c2=9
Hidden Single: r8c6=5
Hidden Single: r2c4=4
Naked Single: r1c6=3
Naked Single: r1c3=2
Naked Single: r1c7=5
Full House: r1c1=4
Naked Single: r3c2=8
Naked Single: r9c3=3
Naked Single: r2c3=5
Full House: r3c1=3
Naked Single: r8c2=7
Naked Single: r7c1=5
Naked Single: r4c2=4
Naked Single: r7c2=2
Full House: r6c2=5
Full House: r7c8=3
Naked Single: r4c8=6
Naked Single: r2c8=8
Naked Single: r3c8=2
Full House: r2c7=6
Full House: r8c8=4
Full House: r2c5=7
Naked Single: r4c3=8
Full House: r8c3=6
Full House: r8c7=8
Full House: r9c1=8
Full House: r9c7=2
Naked Single: r5c7=4
Full House: r6c7=3
Naked Single: r4c5=3
Full House: r4c4=7
Naked Single: r5c1=6
Full House: r6c1=7
Naked Single: r6c5=6
Full House: r6c6=4
Naked Single: r9c4=6
Full House: r5c4=8
Full House: r9c6=7
Naked Single: r5c6=1
Full House: r3c6=6
Full House: r3c5=1
Full House: r5c5=5
|
sudoku_normal_hard_4
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
...1..92...3.4.81.9.1..753..6.5..2.8..5...36.2....4175.5.27.6.1..7.5.4...824.9753
|
876135924523946817941827536769513248415782369238694175354278691697351482182469753
|
. . . 1 . . 9 2 .
. . 3 . 4 . 8 1 .
9 . 1 . . 7 5 3 .
. 6 . 5 . . 2 . 8
. . 5 . . . 3 6 .
2 . . . . 4 1 7 5
. 5 . 2 7 . 6 . 1
. . 7 . 5 . 4 . .
. 8 2 4 . 9 7 5 3
|
8 7 6 1 3 5 9 2 4
5 2 3 9 4 6 8 1 7
9 4 1 8 2 7 5 3 6
7 6 9 5 1 3 2 4 8
4 1 5 7 8 2 3 6 9
2 3 8 6 9 4 1 7 5
3 5 4 2 7 8 6 9 1
6 9 7 3 5 1 4 8 2
1 8 2 4 6 9 7 5 3
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2204m
|
876135924523946817941827536769513248415782369238694175354278691697351482182469753 #1 Easy (340)
Naked Single: r3c7=5
Naked Single: r9c8=5
Hidden Single: r2c8=1
Hidden Single: r7c5=7
Hidden Single: r9c3=2
Naked Single: r9c7=7
Naked Single: r1c7=9
Naked Single: r9c9=3
Naked Single: r6c7=1
Full House: r4c7=2
Hidden Single: r9c4=4
Hidden Single: r6c9=5
Hidden Single: r5c8=6
Hidden Single: r4c1=7
Hidden Single: r5c4=7
Hidden Single: r8c9=2
Hidden Single: r1c3=6
Naked Single: r2c1=5
Hidden Single: r2c4=9
Hidden Single: r4c8=4
Full House: r5c9=9
Naked Single: r4c3=9
Naked Single: r6c2=3
Naked Single: r6c3=8
Full House: r7c3=4
Naked Single: r6c4=6
Full House: r6c5=9
Naked Single: r7c1=3
Naked Single: r3c4=8
Full House: r8c4=3
Naked Single: r7c6=8
Full House: r7c8=9
Full House: r8c8=8
Naked Single: r1c5=3
Naked Single: r1c6=5
Naked Single: r4c5=1
Full House: r4c6=3
Naked Single: r5c6=2
Full House: r5c5=8
Naked Single: r9c5=6
Full House: r3c5=2
Full House: r2c6=6
Full House: r8c6=1
Full House: r9c1=1
Naked Single: r3c2=4
Full House: r3c9=6
Naked Single: r2c9=7
Full House: r1c9=4
Full House: r2c2=2
Naked Single: r8c1=6
Full House: r8c2=9
Naked Single: r5c1=4
Full House: r1c1=8
Full House: r1c2=7
Full House: r5c2=1
|
sudoku_normal_extremely_hard_4
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
...1...2...3.4.8..9.1..7.3..6.5....8..5...3..2....4.7..5.2..6.1..7.5.4...8...9...
|
876135924523946817941827536769513248415782369238694175354278691697351482182469753
|
. . . 1 . . . 2 .
. . 3 . 4 . 8 . .
9 . 1 . . 7 . 3 .
. 6 . 5 . . . . 8
. . 5 . . . 3 . .
2 . . . . 4 . 7 .
. 5 . 2 . . 6 . 1
. . 7 . 5 . 4 . .
. 8 . . . 9 . . .
|
8 7 6 1 3 5 9 2 4
5 2 3 9 4 6 8 1 7
9 4 1 8 2 7 5 3 6
7 6 9 5 1 3 2 4 8
4 1 5 7 8 2 3 6 9
2 3 8 6 9 4 1 7 5
3 5 4 2 7 8 6 9 1
6 9 7 3 5 1 4 8 2
1 8 2 4 6 9 7 5 3
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2204m
|
876135924523946817941827536769513248415782369238694175354278691697351482182469753 #1 Easy (340)
Naked Single: r3c7=5
Naked Single: r9c8=5
Hidden Single: r2c8=1
Hidden Single: r7c5=7
Hidden Single: r9c3=2
Naked Single: r9c7=7
Naked Single: r1c7=9
Naked Single: r9c9=3
Naked Single: r6c7=1
Full House: r4c7=2
Hidden Single: r9c4=4
Hidden Single: r6c9=5
Hidden Single: r5c8=6
Hidden Single: r4c1=7
Hidden Single: r5c4=7
Hidden Single: r8c9=2
Hidden Single: r1c3=6
Naked Single: r2c1=5
Hidden Single: r2c4=9
Hidden Single: r4c8=4
Full House: r5c9=9
Naked Single: r4c3=9
Naked Single: r6c2=3
Naked Single: r6c3=8
Full House: r7c3=4
Naked Single: r6c4=6
Full House: r6c5=9
Naked Single: r7c1=3
Naked Single: r3c4=8
Full House: r8c4=3
Naked Single: r7c6=8
Full House: r7c8=9
Full House: r8c8=8
Naked Single: r1c5=3
Naked Single: r1c6=5
Naked Single: r4c5=1
Full House: r4c6=3
Naked Single: r5c6=2
Full House: r5c5=8
Naked Single: r9c5=6
Full House: r3c5=2
Full House: r2c6=6
Full House: r8c6=1
Full House: r9c1=1
Naked Single: r3c2=4
Full House: r3c9=6
Naked Single: r2c9=7
Full House: r1c9=4
Full House: r2c2=2
Naked Single: r8c1=6
Full House: r8c2=9
Naked Single: r5c1=4
Full House: r1c1=8
Full House: r1c2=7
Full House: r5c2=1
|
sudoku_normal_hard_5
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
254...9713..51.4868...7952..9....8....7.8.1....2...63....12.3699....521462....758
|
254836971379512486816479523193657842467283195582941637745128369938765214621394758
|
2 5 4 . . . 9 7 1
3 . . 5 1 . 4 8 6
8 . . . 7 9 5 2 .
. 9 . . . . 8 . .
. . 7 . 8 . 1 . .
. . 2 . . . 6 3 .
. . . 1 2 . 3 6 9
9 . . . . 5 2 1 4
6 2 . . . . 7 5 8
|
2 5 4 8 3 6 9 7 1
3 7 9 5 1 2 4 8 6
8 1 6 4 7 9 5 2 3
1 9 3 6 5 7 8 4 2
4 6 7 2 8 3 1 9 5
5 8 2 9 4 1 6 3 7
7 4 5 1 2 8 3 6 9
9 3 8 7 6 5 2 1 4
6 2 1 3 9 4 7 5 8
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2206e
|
254836971379512486816479523193657842467283195582941637745128369938765214621394758 #1 Easy (236)
Naked Single: r1c1=2
Hidden Single: r2c8=8
Naked Single: r7c8=6
Naked Single: r7c7=3
Naked Single: r1c7=9
Naked Single: r8c7=2
Naked Single: r9c9=8
Full House: r8c8=1
Naked Single: r2c7=4
Naked Single: r2c5=1
Naked Single: r3c7=5
Full House: r6c7=6
Naked Single: r3c8=2
Full House: r3c9=3
Naked Single: r2c2=7
Naked Single: r2c3=9
Full House: r2c6=2
Naked Single: r4c8=4
Full House: r5c8=9
Hidden Single: r6c2=8
Naked Single: r7c2=4
Naked Single: r8c2=3
Naked Single: r5c2=6
Full House: r3c2=1
Full House: r3c3=6
Full House: r3c4=4
Naked Single: r8c3=8
Naked Single: r8c5=6
Full House: r8c4=7
Naked Single: r9c3=1
Naked Single: r7c3=5
Full House: r4c3=3
Full House: r7c1=7
Full House: r7c6=8
Naked Single: r1c5=3
Naked Single: r6c4=9
Naked Single: r4c5=5
Naked Single: r1c6=6
Full House: r1c4=8
Naked Single: r9c4=3
Naked Single: r4c1=1
Naked Single: r6c5=4
Full House: r9c5=9
Full House: r9c6=4
Naked Single: r5c4=2
Full House: r4c4=6
Naked Single: r4c6=7
Full House: r4c9=2
Naked Single: r5c6=3
Full House: r6c6=1
Naked Single: r6c1=5
Full House: r5c1=4
Full House: r5c9=5
Full House: r6c9=7
|
sudoku_normal_extremely_hard_5
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.54....713..5....68...79....9....8....7.8.1....2....3....12...99....5..462....75.
|
254836971379512486816479523193657842467283195582941637745128369938765214621394758
|
. 5 4 . . . . 7 1
3 . . 5 . . . . 6
8 . . . 7 9 . . .
. 9 . . . . 8 . .
. . 7 . 8 . 1 . .
. . 2 . . . . 3 .
. . . 1 2 . . . 9
9 . . . . 5 . . 4
6 2 . . . . 7 5 .
|
2 5 4 8 3 6 9 7 1
3 7 9 5 1 2 4 8 6
8 1 6 4 7 9 5 2 3
1 9 3 6 5 7 8 4 2
4 6 7 2 8 3 1 9 5
5 8 2 9 4 1 6 3 7
7 4 5 1 2 8 3 6 9
9 3 8 7 6 5 2 1 4
6 2 1 3 9 4 7 5 8
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2206e
|
254836971379512486816479523193657842467283195582941637745128369938765214621394758 #1 Easy (236)
Naked Single: r1c1=2
Hidden Single: r2c8=8
Naked Single: r7c8=6
Naked Single: r7c7=3
Naked Single: r1c7=9
Naked Single: r8c7=2
Naked Single: r9c9=8
Full House: r8c8=1
Naked Single: r2c7=4
Naked Single: r2c5=1
Naked Single: r3c7=5
Full House: r6c7=6
Naked Single: r3c8=2
Full House: r3c9=3
Naked Single: r2c2=7
Naked Single: r2c3=9
Full House: r2c6=2
Naked Single: r4c8=4
Full House: r5c8=9
Hidden Single: r6c2=8
Naked Single: r7c2=4
Naked Single: r8c2=3
Naked Single: r5c2=6
Full House: r3c2=1
Full House: r3c3=6
Full House: r3c4=4
Naked Single: r8c3=8
Naked Single: r8c5=6
Full House: r8c4=7
Naked Single: r9c3=1
Naked Single: r7c3=5
Full House: r4c3=3
Full House: r7c1=7
Full House: r7c6=8
Naked Single: r1c5=3
Naked Single: r6c4=9
Naked Single: r4c5=5
Naked Single: r1c6=6
Full House: r1c4=8
Naked Single: r9c4=3
Naked Single: r4c1=1
Naked Single: r6c5=4
Full House: r9c5=9
Full House: r9c6=4
Naked Single: r5c4=2
Full House: r4c4=6
Naked Single: r4c6=7
Full House: r4c9=2
Naked Single: r5c6=3
Full House: r6c6=1
Naked Single: r6c1=5
Full House: r5c1=4
Full House: r5c9=5
Full House: r6c9=7
|
sudoku_normal_hard_6
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..92.76..6..49315..3....9.4..13.829..2..6134...35..71.3.....86..8..3.4.1...8.95..
|
149257683678493152532186974461378295725961348893524716354712869987635421216849537
|
. . 9 2 . 7 6 . .
6 . . 4 9 3 1 5 .
. 3 . . . . 9 . 4
. . 1 3 . 8 2 9 .
. 2 . . 6 1 3 4 .
. . 3 5 . . 7 1 .
3 . . . . . 8 6 .
. 8 . . 3 . 4 . 1
. . . 8 . 9 5 . .
|
1 4 9 2 5 7 6 8 3
6 7 8 4 9 3 1 5 2
5 3 2 1 8 6 9 7 4
4 6 1 3 7 8 2 9 5
7 2 5 9 6 1 3 4 8
8 9 3 5 2 4 7 1 6
3 5 4 7 1 2 8 6 9
9 8 7 6 3 5 4 2 1
2 1 6 8 4 9 5 3 7
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2009h1
|
149257683678493152532186974461378295725961348893524716354712869987635421216849537 #1 Medium (474)
Locked Candidates Type 1 (Pointing): 3 in b2 => r2c79<>3
Locked Candidates Type 1 (Pointing): 6 in b2 => r3c7<>6
Hidden Single: r1c7=6
Hidden Single: r5c7=3
Naked Single: r4c8=9
Naked Single: r5c6=1
Hidden Single: r4c4=3
Hidden Single: r2c6=3
Hidden Single: r6c8=1
Hidden Single: r3c7=9
Naked Single: r8c7=4
Naked Single: r7c7=8
Full House: r2c7=1
Naked Single: r2c4=4
Naked Single: r2c2=7
Hidden Single: r5c4=9
Hidden Single: r7c9=9
Hidden Single: r8c1=9
Hidden Single: r3c8=7
Naked Single: r8c8=2
Naked Single: r9c8=3
Full House: r1c8=8
Full House: r9c9=7
Naked Single: r1c9=3
Full House: r2c9=2
Full House: r2c3=8
Hidden Single: r4c5=7
Hidden Single: r6c2=9
Hidden Single: r3c5=8
Hidden Single: r5c1=7
Naked Single: r5c3=5
Full House: r5c9=8
Naked Single: r3c3=2
Naked Single: r4c1=4
Naked Single: r6c9=6
Full House: r4c9=5
Full House: r4c2=6
Full House: r6c1=8
Hidden Single: r8c6=5
Naked Single: r3c6=6
Naked Single: r3c4=1
Full House: r1c5=5
Full House: r3c1=5
Naked Single: r7c4=7
Full House: r8c4=6
Full House: r8c3=7
Naked Single: r1c1=1
Full House: r1c2=4
Full House: r9c1=2
Naked Single: r7c3=4
Full House: r9c3=6
Naked Single: r9c2=1
Full House: r7c2=5
Full House: r9c5=4
Naked Single: r7c6=2
Full House: r6c6=4
Full House: r6c5=2
Full House: r7c5=1
|
sudoku_normal_extremely_hard_6
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..92.7...6...9..5..3......4..1..82...2..6..4...35..7..3......6..8..3...1...8.95..
|
149257683678493152532186974461378295725961348893524716354712869987635421216849537
|
. . 9 2 . 7 . . .
6 . . . 9 . . 5 .
. 3 . . . . . . 4
. . 1 . . 8 2 . .
. 2 . . 6 . . 4 .
. . 3 5 . . 7 . .
3 . . . . . . 6 .
. 8 . . 3 . . . 1
. . . 8 . 9 5 . .
|
1 4 9 2 5 7 6 8 3
6 7 8 4 9 3 1 5 2
5 3 2 1 8 6 9 7 4
4 6 1 3 7 8 2 9 5
7 2 5 9 6 1 3 4 8
8 9 3 5 2 4 7 1 6
3 5 4 7 1 2 8 6 9
9 8 7 6 3 5 4 2 1
2 1 6 8 4 9 5 3 7
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2009h1
|
149257683678493152532186974461378295725961348893524716354712869987635421216849537 #1 Medium (474)
Locked Candidates Type 1 (Pointing): 3 in b2 => r2c79<>3
Locked Candidates Type 1 (Pointing): 6 in b2 => r3c7<>6
Hidden Single: r1c7=6
Hidden Single: r5c7=3
Naked Single: r4c8=9
Naked Single: r5c6=1
Hidden Single: r4c4=3
Hidden Single: r2c6=3
Hidden Single: r6c8=1
Hidden Single: r3c7=9
Naked Single: r8c7=4
Naked Single: r7c7=8
Full House: r2c7=1
Naked Single: r2c4=4
Naked Single: r2c2=7
Hidden Single: r5c4=9
Hidden Single: r7c9=9
Hidden Single: r8c1=9
Hidden Single: r3c8=7
Naked Single: r8c8=2
Naked Single: r9c8=3
Full House: r1c8=8
Full House: r9c9=7
Naked Single: r1c9=3
Full House: r2c9=2
Full House: r2c3=8
Hidden Single: r4c5=7
Hidden Single: r6c2=9
Hidden Single: r3c5=8
Hidden Single: r5c1=7
Naked Single: r5c3=5
Full House: r5c9=8
Naked Single: r3c3=2
Naked Single: r4c1=4
Naked Single: r6c9=6
Full House: r4c9=5
Full House: r4c2=6
Full House: r6c1=8
Hidden Single: r8c6=5
Naked Single: r3c6=6
Naked Single: r3c4=1
Full House: r1c5=5
Full House: r3c1=5
Naked Single: r7c4=7
Full House: r8c4=6
Full House: r8c3=7
Naked Single: r1c1=1
Full House: r1c2=4
Full House: r9c1=2
Naked Single: r7c3=4
Full House: r9c3=6
Naked Single: r9c2=1
Full House: r7c2=5
Full House: r9c5=4
Naked Single: r7c6=2
Full House: r6c6=4
Full House: r6c5=2
Full House: r7c5=1
|
sudoku_normal_hard_7
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..31..852567.291..812.4.9.6.8...27....1...4....96...8.1...9...8..82.....67...83..
|
493176852567829134812345976386452791251987463749631285125793648938264517674518329
|
. . 3 1 . . 8 5 2
5 6 7 . 2 9 1 . .
8 1 2 . 4 . 9 . 6
. 8 . . . 2 7 . .
. . 1 . . . 4 . .
. . 9 6 . . . 8 .
1 . . . 9 . . . 8
. . 8 2 . . . . .
6 7 . . . 8 3 . .
|
4 9 3 1 7 6 8 5 2
5 6 7 8 2 9 1 3 4
8 1 2 3 4 5 9 7 6
3 8 6 4 5 2 7 9 1
2 5 1 9 8 7 4 6 3
7 4 9 6 3 1 2 8 5
1 2 5 7 9 3 6 4 8
9 3 8 2 6 4 5 1 7
6 7 4 5 1 8 3 2 9
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2403h2
|
493176852567829134812345976386452791251987463749631285125793648938264517674518329 #1 Medium (568)
Hidden Single: r2c5=2
Hidden Single: r8c3=8
Locked Triple: 1,8,9 in r123c7 => r2c89,r3c8,r68c7<>1, r3c8,r8c7<>9
Locked Candidates Type 1 (Pointing): 6 in b2 => r1c2<>6
Locked Candidates Type 1 (Pointing): 4 in b3 => r2c123<>4
Locked Candidates Type 1 (Pointing): 7 in b4 => r12c1<>7
Naked Single: r2c1=5
Locked Pair: 4,9 in r1c12 => r1c7,r3c2<>9
Naked Single: r1c7=8
Naked Single: r2c7=1
Naked Single: r2c2=6
Naked Single: r3c7=9
Naked Single: r2c3=7
Naked Single: r3c3=2
Naked Single: r3c2=1
Hidden Single: r5c5=8
Hidden Single: r2c4=8
Hidden Single: r4c3=6
Hidden Single: r5c8=6
Hidden Single: r8c9=7
Hidden Single: r3c8=7
Hidden Single: r9c8=2
Naked Single: r7c8=4
Naked Single: r2c8=3
Full House: r2c9=4
Naked Single: r7c3=5
Full House: r9c3=4
Naked Single: r7c7=6
Naked Single: r9c4=5
Naked Single: r8c7=5
Full House: r6c7=2
Naked Single: r3c4=3
Full House: r3c6=5
Naked Single: r9c5=1
Full House: r9c9=9
Full House: r8c8=1
Full House: r4c8=9
Naked Single: r7c4=7
Naked Single: r4c4=4
Full House: r5c4=9
Naked Single: r7c6=3
Full House: r7c2=2
Naked Single: r4c1=3
Naked Single: r5c6=7
Naked Single: r8c5=6
Full House: r8c6=4
Naked Single: r4c5=5
Full House: r4c9=1
Naked Single: r5c2=5
Naked Single: r8c1=9
Full House: r8c2=3
Naked Single: r1c6=6
Full House: r6c6=1
Full House: r1c5=7
Full House: r6c5=3
Naked Single: r5c1=2
Full House: r5c9=3
Full House: r6c9=5
Naked Single: r6c2=4
Full House: r1c2=9
Full House: r1c1=4
Full House: r6c1=7
|
sudoku_normal_extremely_hard_7
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..31...52.....9...8...4...6.8...27....1...4....96...8.1...9...8...2.....67...83..
|
493176852567829134812345976386452791251987463749631285125793648938264517674518329
|
. . 3 1 . . . 5 2
. . . . . 9 . . .
8 . . . 4 . . . 6
. 8 . . . 2 7 . .
. . 1 . . . 4 . .
. . 9 6 . . . 8 .
1 . . . 9 . . . 8
. . . 2 . . . . .
6 7 . . . 8 3 . .
|
4 9 3 1 7 6 8 5 2
5 6 7 8 2 9 1 3 4
8 1 2 3 4 5 9 7 6
3 8 6 4 5 2 7 9 1
2 5 1 9 8 7 4 6 3
7 4 9 6 3 1 2 8 5
1 2 5 7 9 3 6 4 8
9 3 8 2 6 4 5 1 7
6 7 4 5 1 8 3 2 9
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2403h2
|
493176852567829134812345976386452791251987463749631285125793648938264517674518329 #1 Medium (568)
Hidden Single: r2c5=2
Hidden Single: r8c3=8
Locked Triple: 1,8,9 in r123c7 => r2c89,r3c8,r68c7<>1, r3c8,r8c7<>9
Locked Candidates Type 1 (Pointing): 6 in b2 => r1c2<>6
Locked Candidates Type 1 (Pointing): 4 in b3 => r2c123<>4
Locked Candidates Type 1 (Pointing): 7 in b4 => r12c1<>7
Naked Single: r2c1=5
Locked Pair: 4,9 in r1c12 => r1c7,r3c2<>9
Naked Single: r1c7=8
Naked Single: r2c7=1
Naked Single: r2c2=6
Naked Single: r3c7=9
Naked Single: r2c3=7
Naked Single: r3c3=2
Naked Single: r3c2=1
Hidden Single: r5c5=8
Hidden Single: r2c4=8
Hidden Single: r4c3=6
Hidden Single: r5c8=6
Hidden Single: r8c9=7
Hidden Single: r3c8=7
Hidden Single: r9c8=2
Naked Single: r7c8=4
Naked Single: r2c8=3
Full House: r2c9=4
Naked Single: r7c3=5
Full House: r9c3=4
Naked Single: r7c7=6
Naked Single: r9c4=5
Naked Single: r8c7=5
Full House: r6c7=2
Naked Single: r3c4=3
Full House: r3c6=5
Naked Single: r9c5=1
Full House: r9c9=9
Full House: r8c8=1
Full House: r4c8=9
Naked Single: r7c4=7
Naked Single: r4c4=4
Full House: r5c4=9
Naked Single: r7c6=3
Full House: r7c2=2
Naked Single: r4c1=3
Naked Single: r5c6=7
Naked Single: r8c5=6
Full House: r8c6=4
Naked Single: r4c5=5
Full House: r4c9=1
Naked Single: r5c2=5
Naked Single: r8c1=9
Full House: r8c2=3
Naked Single: r1c6=6
Full House: r6c6=1
Full House: r1c5=7
Full House: r6c5=3
Naked Single: r5c1=2
Full House: r5c9=3
Full House: r6c9=5
Naked Single: r6c2=4
Full House: r1c2=9
Full House: r1c1=4
Full House: r6c1=7
|
sudoku_normal_hard_8
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..6..45.957..1.8..89.536.7..15.2.3..4....5..8.89.6..5..58.427.1.47.5..8.3..9..4.5
|
126874539573219846894536172615428397432795618789163254958342761247651983361987425
|
. . 6 . . 4 5 . 9
5 7 . . 1 . 8 . .
8 9 . 5 3 6 . 7 .
. 1 5 . 2 . 3 . .
4 . . . . 5 . . 8
. 8 9 . 6 . . 5 .
. 5 8 . 4 2 7 . 1
. 4 7 . 5 . . 8 .
3 . . 9 . . 4 . 5
|
1 2 6 8 7 4 5 3 9
5 7 3 2 1 9 8 4 6
8 9 4 5 3 6 1 7 2
6 1 5 4 2 8 3 9 7
4 3 2 7 9 5 6 1 8
7 8 9 1 6 3 2 5 4
9 5 8 3 4 2 7 6 1
2 4 7 6 5 1 9 8 3
3 6 1 9 8 7 4 2 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2402m
|
126874539573219846894536172615428397432795618789163254958342761247651983361987425 #1 Easy (370)
Hidden Single: r7c5=4
Naked Single: r7c3=8
Naked Single: r4c3=5
Hidden Single: r9c9=5
Hidden Single: r1c7=5
Hidden Single: r8c2=4
Hidden Single: r6c2=8
Hidden Single: r5c6=5
Hidden Single: r2c1=5
Hidden Single: r7c7=7
Hidden Single: r3c2=9
Naked Single: r3c5=3
Naked Single: r3c6=6
Naked Single: r2c4=2
Naked Single: r2c6=9
Hidden Single: r5c5=9
Hidden Single: r4c8=9
Hidden Single: r8c7=9
Hidden Single: r5c4=7
Naked Single: r1c4=8
Full House: r1c5=7
Full House: r9c5=8
Naked Single: r4c6=8
Naked Single: r4c4=4
Hidden Single: r7c1=9
Hidden Single: r2c8=4
Naked Single: r2c3=3
Full House: r2c9=6
Naked Single: r3c9=2
Naked Single: r1c2=2
Naked Single: r5c3=2
Naked Single: r4c9=7
Full House: r4c1=6
Naked Single: r3c7=1
Full House: r1c8=3
Full House: r1c1=1
Full House: r3c3=4
Full House: r9c3=1
Naked Single: r8c9=3
Full House: r6c9=4
Naked Single: r9c2=6
Full House: r5c2=3
Full House: r6c1=7
Full House: r8c1=2
Naked Single: r5c7=6
Full House: r6c7=2
Full House: r5c8=1
Naked Single: r7c8=6
Full House: r9c8=2
Full House: r9c6=7
Full House: r7c4=3
Naked Single: r8c6=1
Full House: r6c6=3
Full House: r6c4=1
Full House: r8c4=6
|
sudoku_normal_extremely_hard_8
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..6..4..9.7..1.8..8..5...7..1..2.3..4.......8..9.6..5..5...2..1..7.5..8.3..9..4..
|
126874539573219846894536172615428397432795618789163254958342761247651983361987425
|
. . 6 . . 4 . . 9
. 7 . . 1 . 8 . .
8 . . 5 . . . 7 .
. 1 . . 2 . 3 . .
4 . . . . . . . 8
. . 9 . 6 . . 5 .
. 5 . . . 2 . . 1
. . 7 . 5 . . 8 .
3 . . 9 . . 4 . .
|
1 2 6 8 7 4 5 3 9
5 7 3 2 1 9 8 4 6
8 9 4 5 3 6 1 7 2
6 1 5 4 2 8 3 9 7
4 3 2 7 9 5 6 1 8
7 8 9 1 6 3 2 5 4
9 5 8 3 4 2 7 6 1
2 4 7 6 5 1 9 8 3
3 6 1 9 8 7 4 2 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2402m
|
126874539573219846894536172615428397432795618789163254958342761247651983361987425 #1 Easy (370)
Hidden Single: r7c5=4
Naked Single: r7c3=8
Naked Single: r4c3=5
Hidden Single: r9c9=5
Hidden Single: r1c7=5
Hidden Single: r8c2=4
Hidden Single: r6c2=8
Hidden Single: r5c6=5
Hidden Single: r2c1=5
Hidden Single: r7c7=7
Hidden Single: r3c2=9
Naked Single: r3c5=3
Naked Single: r3c6=6
Naked Single: r2c4=2
Naked Single: r2c6=9
Hidden Single: r5c5=9
Hidden Single: r4c8=9
Hidden Single: r8c7=9
Hidden Single: r5c4=7
Naked Single: r1c4=8
Full House: r1c5=7
Full House: r9c5=8
Naked Single: r4c6=8
Naked Single: r4c4=4
Hidden Single: r7c1=9
Hidden Single: r2c8=4
Naked Single: r2c3=3
Full House: r2c9=6
Naked Single: r3c9=2
Naked Single: r1c2=2
Naked Single: r5c3=2
Naked Single: r4c9=7
Full House: r4c1=6
Naked Single: r3c7=1
Full House: r1c8=3
Full House: r1c1=1
Full House: r3c3=4
Full House: r9c3=1
Naked Single: r8c9=3
Full House: r6c9=4
Naked Single: r9c2=6
Full House: r5c2=3
Full House: r6c1=7
Full House: r8c1=2
Naked Single: r5c7=6
Full House: r6c7=2
Full House: r5c8=1
Naked Single: r7c8=6
Full House: r9c8=2
Full House: r9c6=7
Full House: r7c4=3
Naked Single: r8c6=1
Full House: r6c6=3
Full House: r6c4=1
Full House: r8c4=6
|
sudoku_normal_hard_9
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.4.1..8.51....7.3...9.3....6..2...7....78.....7...5.828...7.4...5.9....8932846517
|
347129865168457239529638741685291374293784156471365982816572493754913628932846517
|
. 4 . 1 . . 8 . 5
1 . . . . 7 . 3 .
. . 9 . 3 . . . .
6 . . 2 . . . 7 .
. . . 7 8 . . . .
. 7 . . . 5 . 8 2
8 . . . 7 . 4 . .
. 5 . 9 . . . . 8
9 3 2 8 4 6 5 1 7
|
3 4 7 1 2 9 8 6 5
1 6 8 4 5 7 2 3 9
5 2 9 6 3 8 7 4 1
6 8 5 2 9 1 3 7 4
2 9 3 7 8 4 1 5 6
4 7 1 3 6 5 9 8 2
8 1 6 5 7 2 4 9 3
7 5 4 9 1 3 6 2 8
9 3 2 8 4 6 5 1 7
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2012h2
|
347129865168457239529638741685291374293784156471365982816572493754913628932846517 #1 Medium (804)
Hidden Single: r5c4=7
Hidden Single: r6c8=8
Locked Candidates Type 1 (Pointing): 7 in b3 => r3c1<>7
Locked Candidates Type 1 (Pointing): 6 in b5 => r6c7<>6
Locked Candidates Type 1 (Pointing): 4 in b7 => r8c56<>4
Locked Candidates Type 1 (Pointing): 7 in b7 => r8c7<>7
Naked Pair: 3,8 in r7c1,r9c2 => r7c23,r8c13<>3, r7c23<>8
Locked Pair: 1,6 in r7c23 => r7c6,r8c3<>1, r7c89,r8c3<>6
Naked Triple: 2,6,9 in r1c568 => r1c1<>2, r1c3<>6
Naked Triple: 3,4,7 in r168c1 => r57c1<>3, r5c1<>4
Naked Single: r7c1=8
Naked Single: r9c2=3
Naked Single: r9c9=7
Naked Single: r9c7=5
Naked Single: r9c5=4
Full House: r9c4=8
Hidden Single: r3c6=8
Hidden Single: r3c7=7
Hidden Single: r4c3=5
Naked Single: r5c1=2
Naked Single: r3c1=5
Hidden Single: r5c8=5
Hidden Single: r7c4=5
Hidden Single: r2c5=5
Hidden Single: r3c9=1
Hidden Single: r4c2=8
Hidden Single: r2c3=8
Hidden Single: r3c8=4
Naked Single: r3c4=6
Full House: r3c2=2
Naked Single: r2c4=4
Full House: r6c4=3
Naked Single: r2c2=6
Naked Single: r6c1=4
Naked Single: r2c9=9
Full House: r2c7=2
Full House: r1c8=6
Naked Single: r7c2=1
Full House: r5c2=9
Naked Single: r6c3=1
Full House: r5c3=3
Naked Single: r8c1=7
Full House: r1c1=3
Full House: r1c3=7
Naked Single: r7c9=3
Naked Single: r8c8=2
Full House: r7c8=9
Full House: r8c7=6
Naked Single: r7c3=6
Full House: r8c3=4
Full House: r7c6=2
Naked Single: r6c7=9
Full House: r6c5=6
Naked Single: r4c9=4
Full House: r5c9=6
Naked Single: r8c5=1
Full House: r8c6=3
Naked Single: r5c7=1
Full House: r4c7=3
Full House: r5c6=4
Naked Single: r1c6=9
Full House: r1c5=2
Full House: r4c5=9
Full House: r4c6=1
|
sudoku_normal_extremely_hard_9
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.4.1..8.51....7.3...9.3....6..2...7.....8.....7...5..2....7.4...5.9....89.2..6.1.
|
347129865168457239529638741685291374293784156471365982816572493754913628932846517
|
. 4 . 1 . . 8 . 5
1 . . . . 7 . 3 .
. . 9 . 3 . . . .
6 . . 2 . . . 7 .
. . . . 8 . . . .
. 7 . . . 5 . . 2
. . . . 7 . 4 . .
. 5 . 9 . . . . 8
9 . 2 . . 6 . 1 .
|
3 4 7 1 2 9 8 6 5
1 6 8 4 5 7 2 3 9
5 2 9 6 3 8 7 4 1
6 8 5 2 9 1 3 7 4
2 9 3 7 8 4 1 5 6
4 7 1 3 6 5 9 8 2
8 1 6 5 7 2 4 9 3
7 5 4 9 1 3 6 2 8
9 3 2 8 4 6 5 1 7
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2012h2
|
347129865168457239529638741685291374293784156471365982816572493754913628932846517 #1 Medium (804)
Hidden Single: r5c4=7
Hidden Single: r6c8=8
Locked Candidates Type 1 (Pointing): 7 in b3 => r3c1<>7
Locked Candidates Type 1 (Pointing): 6 in b5 => r6c7<>6
Locked Candidates Type 1 (Pointing): 4 in b7 => r8c56<>4
Locked Candidates Type 1 (Pointing): 7 in b7 => r8c7<>7
Naked Pair: 3,8 in r7c1,r9c2 => r7c23,r8c13<>3, r7c23<>8
Locked Pair: 1,6 in r7c23 => r7c6,r8c3<>1, r7c89,r8c3<>6
Naked Triple: 2,6,9 in r1c568 => r1c1<>2, r1c3<>6
Naked Triple: 3,4,7 in r168c1 => r57c1<>3, r5c1<>4
Naked Single: r7c1=8
Naked Single: r9c2=3
Naked Single: r9c9=7
Naked Single: r9c7=5
Naked Single: r9c5=4
Full House: r9c4=8
Hidden Single: r3c6=8
Hidden Single: r3c7=7
Hidden Single: r4c3=5
Naked Single: r5c1=2
Naked Single: r3c1=5
Hidden Single: r5c8=5
Hidden Single: r7c4=5
Hidden Single: r2c5=5
Hidden Single: r3c9=1
Hidden Single: r4c2=8
Hidden Single: r2c3=8
Hidden Single: r3c8=4
Naked Single: r3c4=6
Full House: r3c2=2
Naked Single: r2c4=4
Full House: r6c4=3
Naked Single: r2c2=6
Naked Single: r6c1=4
Naked Single: r2c9=9
Full House: r2c7=2
Full House: r1c8=6
Naked Single: r7c2=1
Full House: r5c2=9
Naked Single: r6c3=1
Full House: r5c3=3
Naked Single: r8c1=7
Full House: r1c1=3
Full House: r1c3=7
Naked Single: r7c9=3
Naked Single: r8c8=2
Full House: r7c8=9
Full House: r8c7=6
Naked Single: r7c3=6
Full House: r8c3=4
Full House: r7c6=2
Naked Single: r6c7=9
Full House: r6c5=6
Naked Single: r4c9=4
Full House: r5c9=6
Naked Single: r8c5=1
Full House: r8c6=3
Naked Single: r5c7=1
Full House: r4c7=3
Full House: r5c6=4
Naked Single: r1c6=9
Full House: r1c5=2
Full House: r4c5=9
Full House: r4c6=1
|
sudoku_normal_hard_10
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.2.1.8..47512.48.9..4.7..12.4.3....5..6.5.4..5..4.6.9..7..231.6..5..1..331.64..87
|
923168754751234869684975312148392675296857431537416298879523146465781923312649587
|
. 2 . 1 . 8 . . 4
7 5 1 2 . 4 8 . 9
. . 4 . 7 . . 1 2
. 4 . 3 . . . . 5
. . 6 . 5 . 4 . .
5 . . 4 . 6 . 9 .
. 7 . . 2 3 1 . 6
. . 5 . . 1 . . 3
3 1 . 6 4 . . 8 7
|
9 2 3 1 6 8 7 5 4
7 5 1 2 3 4 8 6 9
6 8 4 9 7 5 3 1 2
1 4 8 3 9 2 6 7 5
2 9 6 8 5 7 4 3 1
5 3 7 4 1 6 2 9 8
8 7 9 5 2 3 1 4 6
4 6 5 7 8 1 9 2 3
3 1 2 6 4 9 5 8 7
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2311h2
|
923168754751234869684975312148392675296857431537416298879523146465781923312649587 #1 Medium (520)
Hidden Single: r7c6=3
Locked Pair: 5,9 in r3c46 => r1c45,r2c56,r3c1279<>9, r1c45,r2c56,r3c27<>5
Naked Single: r1c4=1
Naked Single: r2c6=4
Hidden Single: r2c2=5
Hidden Single: r9c5=4
Hidden Single: r2c3=1
Hidden Single: r6c4=4
Hidden Single: r5c5=5
Hidden Single: r9c2=1
Hidden Single: r2c9=9
Naked Single: r7c9=6
Naked Single: r3c9=2
Naked Single: r9c9=7
Hidden Single: r8c4=7
Naked Pair: 3,6 in r2c8,r3c7 => r1c78<>3, r1c78<>6
Naked Pair: 1,8 in r6c59 => r6c23<>8
Naked Single: r6c2=3
Hidden Single: r3c7=3
Naked Single: r2c8=6
Full House: r2c5=3
Naked Single: r1c5=6
Naked Single: r1c1=9
Naked Single: r1c3=3
Hidden Single: r5c8=3
Hidden Single: r4c7=6
Hidden Single: r5c6=7
Hidden Single: r5c1=2
Naked Single: r6c3=7
Naked Single: r6c7=2
Naked Single: r4c8=7
Naked Single: r8c7=9
Naked Single: r1c8=5
Full House: r1c7=7
Full House: r9c7=5
Naked Single: r8c5=8
Naked Single: r7c8=4
Full House: r8c8=2
Naked Single: r9c6=9
Full House: r7c4=5
Full House: r9c3=2
Naked Single: r6c5=1
Full House: r4c5=9
Full House: r6c9=8
Full House: r5c9=1
Naked Single: r8c2=6
Full House: r8c1=4
Naked Single: r7c1=8
Full House: r7c3=9
Full House: r4c3=8
Naked Single: r3c6=5
Full House: r4c6=2
Full House: r3c4=9
Full House: r5c4=8
Full House: r4c1=1
Full House: r3c1=6
Full House: r3c2=8
Full House: r5c2=9
|
sudoku_normal_extremely_hard_10
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.2...8..47..2..8....4.7..1..4.3....5..6...4..5....6.9..7..2.1....5..1..33..6...8.
|
923168754751234869684975312148392675296857431537416298879523146465781923312649587
|
. 2 . . . 8 . . 4
7 . . 2 . . 8 . .
. . 4 . 7 . . 1 .
. 4 . 3 . . . . 5
. . 6 . . . 4 . .
5 . . . . 6 . 9 .
. 7 . . 2 . 1 . .
. . 5 . . 1 . . 3
3 . . 6 . . . 8 .
|
9 2 3 1 6 8 7 5 4
7 5 1 2 3 4 8 6 9
6 8 4 9 7 5 3 1 2
1 4 8 3 9 2 6 7 5
2 9 6 8 5 7 4 3 1
5 3 7 4 1 6 2 9 8
8 7 9 5 2 3 1 4 6
4 6 5 7 8 1 9 2 3
3 1 2 6 4 9 5 8 7
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2311h2
|
923168754751234869684975312148392675296857431537416298879523146465781923312649587 #1 Medium (520)
Hidden Single: r7c6=3
Locked Pair: 5,9 in r3c46 => r1c45,r2c56,r3c1279<>9, r1c45,r2c56,r3c27<>5
Naked Single: r1c4=1
Naked Single: r2c6=4
Hidden Single: r2c2=5
Hidden Single: r9c5=4
Hidden Single: r2c3=1
Hidden Single: r6c4=4
Hidden Single: r5c5=5
Hidden Single: r9c2=1
Hidden Single: r2c9=9
Naked Single: r7c9=6
Naked Single: r3c9=2
Naked Single: r9c9=7
Hidden Single: r8c4=7
Naked Pair: 3,6 in r2c8,r3c7 => r1c78<>3, r1c78<>6
Naked Pair: 1,8 in r6c59 => r6c23<>8
Naked Single: r6c2=3
Hidden Single: r3c7=3
Naked Single: r2c8=6
Full House: r2c5=3
Naked Single: r1c5=6
Naked Single: r1c1=9
Naked Single: r1c3=3
Hidden Single: r5c8=3
Hidden Single: r4c7=6
Hidden Single: r5c6=7
Hidden Single: r5c1=2
Naked Single: r6c3=7
Naked Single: r6c7=2
Naked Single: r4c8=7
Naked Single: r8c7=9
Naked Single: r1c8=5
Full House: r1c7=7
Full House: r9c7=5
Naked Single: r8c5=8
Naked Single: r7c8=4
Full House: r8c8=2
Naked Single: r9c6=9
Full House: r7c4=5
Full House: r9c3=2
Naked Single: r6c5=1
Full House: r4c5=9
Full House: r6c9=8
Full House: r5c9=1
Naked Single: r8c2=6
Full House: r8c1=4
Naked Single: r7c1=8
Full House: r7c3=9
Full House: r4c3=8
Naked Single: r3c6=5
Full House: r4c6=2
Full House: r3c4=9
Full House: r5c4=8
Full House: r4c1=1
Full House: r3c1=6
Full House: r3c2=8
Full House: r5c2=9
|
sudoku_normal_hard_11
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
9..15..36.3..9..8.5...342....1.73.4.64..8..2779.24.8....271...4.5..6..723...25..8
|
928157436134692785576834291281573649643981527795246813862719354459368172317425968
|
9 . . 1 5 . . 3 6
. 3 . . 9 . . 8 .
5 . . . 3 4 2 . .
. . 1 . 7 3 . 4 .
6 4 . . 8 . . 2 7
7 9 . 2 4 . 8 . .
. . 2 7 1 . . . 4
. 5 . . 6 . . 7 2
3 . . . 2 5 . . 8
|
9 2 8 1 5 7 4 3 6
1 3 4 6 9 2 7 8 5
5 7 6 8 3 4 2 9 1
2 8 1 5 7 3 6 4 9
6 4 3 9 8 1 5 2 7
7 9 5 2 4 6 8 1 3
8 6 2 7 1 9 3 5 4
4 5 9 3 6 8 1 7 2
3 1 7 4 2 5 9 6 8
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2401h2
|
928157436134692785576834291281573649643981527795246813862719354459368172317425968 #1 Medium (476)
Hidden Pair: 4,7 in r12c7 => r1c7<>3, r12c7<>5, r2c7<>1
Hidden Pair: 3,5 in r56c3 => r56c3<>4, r6c3<>7
Hidden Pair: 3,5 in r1c58 => r1c5<>2, r1c5<>7
Hidden Single: r9c5=2
Hidden Single: r8c9=2
Hidden Single: r5c8=2
Naked Single: r5c2=4
Naked Single: r6c1=7
Hidden Single: r6c5=4
Hidden Single: r4c5=7
Naked Single: r3c5=3
Naked Single: r1c5=5
Full House: r7c5=1
Naked Single: r1c8=3
Naked Single: r2c4=6
Naked Single: r7c1=8
Naked Single: r3c4=8
Naked Single: r4c1=2
Naked Single: r7c2=6
Naked Single: r7c6=9
Naked Single: r4c2=8
Naked Single: r5c6=1
Naked Single: r7c8=5
Full House: r7c7=3
Naked Single: r8c6=8
Naked Single: r9c4=4
Full House: r8c4=3
Naked Single: r6c6=6
Naked Single: r6c8=1
Naked Single: r3c8=9
Full House: r9c8=6
Naked Single: r3c9=1
Naked Single: r2c9=5
Naked Single: r3c2=7
Full House: r3c3=6
Naked Single: r4c9=9
Full House: r6c9=3
Full House: r6c3=5
Full House: r5c3=3
Naked Single: r1c2=2
Full House: r9c2=1
Naked Single: r2c3=4
Naked Single: r4c4=5
Full House: r4c7=6
Full House: r5c7=5
Full House: r5c4=9
Naked Single: r1c6=7
Full House: r2c6=2
Naked Single: r8c1=4
Full House: r2c1=1
Full House: r1c3=8
Full House: r2c7=7
Full House: r1c7=4
Naked Single: r9c7=9
Full House: r8c7=1
Full House: r8c3=9
Full House: r9c3=7
|
sudoku_normal_extremely_hard_11
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
9..1....6.3..9..8.5....42....1..3.4.6...8...7.9.2..8....27....4.5..6..7.3....5..8
|
928157436134692785576834291281573649643981527795246813862719354459368172317425968
|
9 . . 1 . . . . 6
. 3 . . 9 . . 8 .
5 . . . . 4 2 . .
. . 1 . . 3 . 4 .
6 . . . 8 . . . 7
. 9 . 2 . . 8 . .
. . 2 7 . . . . 4
. 5 . . 6 . . 7 .
3 . . . . 5 . . 8
|
9 2 8 1 5 7 4 3 6
1 3 4 6 9 2 7 8 5
5 7 6 8 3 4 2 9 1
2 8 1 5 7 3 6 4 9
6 4 3 9 8 1 5 2 7
7 9 5 2 4 6 8 1 3
8 6 2 7 1 9 3 5 4
4 5 9 3 6 8 1 7 2
3 1 7 4 2 5 9 6 8
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2401h2
|
928157436134692785576834291281573649643981527795246813862719354459368172317425968 #1 Medium (476)
Hidden Pair: 4,7 in r12c7 => r1c7<>3, r12c7<>5, r2c7<>1
Hidden Pair: 3,5 in r56c3 => r56c3<>4, r6c3<>7
Hidden Pair: 3,5 in r1c58 => r1c5<>2, r1c5<>7
Hidden Single: r9c5=2
Hidden Single: r8c9=2
Hidden Single: r5c8=2
Naked Single: r5c2=4
Naked Single: r6c1=7
Hidden Single: r6c5=4
Hidden Single: r4c5=7
Naked Single: r3c5=3
Naked Single: r1c5=5
Full House: r7c5=1
Naked Single: r1c8=3
Naked Single: r2c4=6
Naked Single: r7c1=8
Naked Single: r3c4=8
Naked Single: r4c1=2
Naked Single: r7c2=6
Naked Single: r7c6=9
Naked Single: r4c2=8
Naked Single: r5c6=1
Naked Single: r7c8=5
Full House: r7c7=3
Naked Single: r8c6=8
Naked Single: r9c4=4
Full House: r8c4=3
Naked Single: r6c6=6
Naked Single: r6c8=1
Naked Single: r3c8=9
Full House: r9c8=6
Naked Single: r3c9=1
Naked Single: r2c9=5
Naked Single: r3c2=7
Full House: r3c3=6
Naked Single: r4c9=9
Full House: r6c9=3
Full House: r6c3=5
Full House: r5c3=3
Naked Single: r1c2=2
Full House: r9c2=1
Naked Single: r2c3=4
Naked Single: r4c4=5
Full House: r4c7=6
Full House: r5c7=5
Full House: r5c4=9
Naked Single: r1c6=7
Full House: r2c6=2
Naked Single: r8c1=4
Full House: r2c1=1
Full House: r1c3=8
Full House: r2c7=7
Full House: r1c7=4
Naked Single: r9c7=9
Full House: r8c7=1
Full House: r8c3=9
Full House: r9c3=7
|
sudoku_normal_hard_12
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
29...574...147..6.4...3...2.34.5..161.....4.778.1645..84..9.....2..436.1.175...94
|
296815743351472968478936152934257816165389427782164539843691275529743681617528394
|
2 9 . . . 5 7 4 .
. . 1 4 7 . . 6 .
4 . . . 3 . . . 2
. 3 4 . 5 . . 1 6
1 . . . . . 4 . 7
7 8 . 1 6 4 5 . .
8 4 . . 9 . . . .
. 2 . . 4 3 6 . 1
. 1 7 5 . . . 9 4
|
2 9 6 8 1 5 7 4 3
3 5 1 4 7 2 9 6 8
4 7 8 9 3 6 1 5 2
9 3 4 2 5 7 8 1 6
1 6 5 3 8 9 4 2 7
7 8 2 1 6 4 5 3 9
8 4 3 6 9 1 2 7 5
5 2 9 7 4 3 6 8 1
6 1 7 5 2 8 3 9 4
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2208m
|
296815743351472968478936152934257816165389427782164539843691275529743681617528394 #1 Easy (340)
Hidden Single: r4c9=6
Hidden Single: r1c8=4
Hidden Single: r5c7=4
Hidden Single: r6c6=4
Hidden Single: r8c5=4
Hidden Single: r7c2=4
Hidden Single: r6c4=1
Hidden Single: r3c1=4
Hidden Single: r2c5=7
Hidden Single: r9c2=1
Hidden Single: r8c9=1
Hidden Single: r6c1=7
Naked Single: r4c2=3
Naked Single: r2c2=5
Naked Single: r4c1=9
Naked Single: r2c1=3
Naked Single: r5c2=6
Full House: r3c2=7
Naked Single: r6c3=2
Full House: r5c3=5
Naked Single: r8c1=5
Full House: r9c1=6
Naked Single: r6c8=3
Full House: r6c9=9
Naked Single: r8c3=9
Full House: r7c3=3
Naked Single: r2c9=8
Naked Single: r7c7=2
Naked Single: r7c9=5
Full House: r1c9=3
Naked Single: r2c7=9
Full House: r2c6=2
Naked Single: r3c8=5
Full House: r3c7=1
Naked Single: r4c7=8
Full House: r5c8=2
Full House: r9c7=3
Naked Single: r7c8=7
Full House: r8c8=8
Full House: r8c4=7
Naked Single: r9c6=8
Full House: r9c5=2
Naked Single: r4c6=7
Full House: r4c4=2
Naked Single: r5c5=8
Full House: r1c5=1
Naked Single: r7c4=6
Full House: r7c6=1
Naked Single: r5c6=9
Full House: r3c6=6
Full House: r5c4=3
Naked Single: r1c4=8
Full House: r1c3=6
Full House: r3c3=8
Full House: r3c4=9
|
sudoku_normal_extremely_hard_12
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
29...57....14...6.....3...2..4.5..1.1.......7.8..6.5..8...9.....2...36....75...94
|
296815743351472968478936152934257816165389427782164539843691275529743681617528394
|
2 9 . . . 5 7 . .
. . 1 4 . . . 6 .
. . . . 3 . . . 2
. . 4 . 5 . . 1 .
1 . . . . . . . 7
. 8 . . 6 . 5 . .
8 . . . 9 . . . .
. 2 . . . 3 6 . .
. . 7 5 . . . 9 4
|
2 9 6 8 1 5 7 4 3
3 5 1 4 7 2 9 6 8
4 7 8 9 3 6 1 5 2
9 3 4 2 5 7 8 1 6
1 6 5 3 8 9 4 2 7
7 8 2 1 6 4 5 3 9
8 4 3 6 9 1 2 7 5
5 2 9 7 4 3 6 8 1
6 1 7 5 2 8 3 9 4
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2208m
|
296815743351472968478936152934257816165389427782164539843691275529743681617528394 #1 Easy (340)
Hidden Single: r4c9=6
Hidden Single: r1c8=4
Hidden Single: r5c7=4
Hidden Single: r6c6=4
Hidden Single: r8c5=4
Hidden Single: r7c2=4
Hidden Single: r6c4=1
Hidden Single: r3c1=4
Hidden Single: r2c5=7
Hidden Single: r9c2=1
Hidden Single: r8c9=1
Hidden Single: r6c1=7
Naked Single: r4c2=3
Naked Single: r2c2=5
Naked Single: r4c1=9
Naked Single: r2c1=3
Naked Single: r5c2=6
Full House: r3c2=7
Naked Single: r6c3=2
Full House: r5c3=5
Naked Single: r8c1=5
Full House: r9c1=6
Naked Single: r6c8=3
Full House: r6c9=9
Naked Single: r8c3=9
Full House: r7c3=3
Naked Single: r2c9=8
Naked Single: r7c7=2
Naked Single: r7c9=5
Full House: r1c9=3
Naked Single: r2c7=9
Full House: r2c6=2
Naked Single: r3c8=5
Full House: r3c7=1
Naked Single: r4c7=8
Full House: r5c8=2
Full House: r9c7=3
Naked Single: r7c8=7
Full House: r8c8=8
Full House: r8c4=7
Naked Single: r9c6=8
Full House: r9c5=2
Naked Single: r4c6=7
Full House: r4c4=2
Naked Single: r5c5=8
Full House: r1c5=1
Naked Single: r7c4=6
Full House: r7c6=1
Naked Single: r5c6=9
Full House: r3c6=6
Full House: r5c4=3
Naked Single: r1c4=8
Full House: r1c3=6
Full House: r3c3=8
Full House: r3c4=9
|
sudoku_normal_hard_13
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..6.3.85.4..25..76.5...6..1...1...9...5...4...9...51..7.98.3.1..6.5197.35.3.472.9
|
276931854431258976958476321327164598185392467694785132749823615862519743513647289
|
. . 6 . 3 . 8 5 .
4 . . 2 5 . . 7 6
. 5 . . . 6 . . 1
. . . 1 . . . 9 .
. . 5 . . . 4 . .
. 9 . . . 5 1 . .
7 . 9 8 . 3 . 1 .
. 6 . 5 1 9 7 . 3
5 . 3 . 4 7 2 . 9
|
2 7 6 9 3 1 8 5 4
4 3 1 2 5 8 9 7 6
9 5 8 4 7 6 3 2 1
3 2 7 1 6 4 5 9 8
1 8 5 3 9 2 4 6 7
6 9 4 7 8 5 1 3 2
7 4 9 8 2 3 6 1 5
8 6 2 5 1 9 7 4 3
5 1 3 6 4 7 2 8 9
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2401h3
|
276931854431258976958476321327164598185392467694785132749823615862519743513647289 #1 Medium (498)
Hidden Single: r6c7=1
Hidden Single: r7c6=3
Locked Candidates Type 1 (Pointing): 2 in b8 => r456c5<>2
Naked Pair: 5,7 in r8c47 => r8c158<>5, r8c5<>7
Hidden Single: r9c1=5
Hidden Single: r1c8=5
Hidden Single: r9c9=9
Naked Single: r2c9=6
Hidden Single: r7c3=9
Hidden Single: r8c4=5
Naked Single: r8c7=7
Hidden Single: r2c5=5
Hidden Single: r8c5=1
Naked Single: r9c6=7
Naked Single: r9c4=6
Full House: r7c5=2
Naked Single: r9c8=8
Full House: r9c2=1
Naked Single: r7c2=4
Naked Single: r8c8=4
Naked Single: r7c9=5
Full House: r7c7=6
Hidden Single: r2c7=9
Naked Single: r3c7=3
Full House: r4c7=5
Naked Single: r3c8=2
Full House: r1c9=4
Naked Single: r1c6=1
Naked Single: r2c6=8
Naked Single: r2c2=3
Full House: r2c3=1
Naked Single: r5c6=2
Full House: r4c6=4
Hidden Single: r5c1=1
Hidden Single: r3c4=4
Hidden Single: r4c1=3
Hidden Single: r6c3=4
Hidden Single: r4c5=6
Hidden Single: r6c1=6
Naked Single: r6c8=3
Full House: r5c8=6
Naked Single: r6c4=7
Naked Single: r1c4=9
Full House: r3c5=7
Full House: r5c4=3
Naked Single: r6c5=8
Full House: r5c5=9
Full House: r6c9=2
Naked Single: r1c1=2
Full House: r1c2=7
Naked Single: r3c3=8
Full House: r3c1=9
Full House: r8c1=8
Full House: r8c3=2
Full House: r4c3=7
Naked Single: r5c2=8
Full House: r4c2=2
Full House: r4c9=8
Full House: r5c9=7
|
sudoku_normal_extremely_hard_13
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..6.3.8..4..2...7..5...6..1...1...9...5...4...9...5...7..8...1..6...9..3..3.4.2..
|
276931854431258976958476321327164598185392467694785132749823615862519743513647289
|
. . 6 . 3 . 8 . .
4 . . 2 . . . 7 .
. 5 . . . 6 . . 1
. . . 1 . . . 9 .
. . 5 . . . 4 . .
. 9 . . . 5 . . .
7 . . 8 . . . 1 .
. 6 . . . 9 . . 3
. . 3 . 4 . 2 . .
|
2 7 6 9 3 1 8 5 4
4 3 1 2 5 8 9 7 6
9 5 8 4 7 6 3 2 1
3 2 7 1 6 4 5 9 8
1 8 5 3 9 2 4 6 7
6 9 4 7 8 5 1 3 2
7 4 9 8 2 3 6 1 5
8 6 2 5 1 9 7 4 3
5 1 3 6 4 7 2 8 9
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2401h3
|
276931854431258976958476321327164598185392467694785132749823615862519743513647289 #1 Medium (498)
Hidden Single: r6c7=1
Hidden Single: r7c6=3
Locked Candidates Type 1 (Pointing): 2 in b8 => r456c5<>2
Naked Pair: 5,7 in r8c47 => r8c158<>5, r8c5<>7
Hidden Single: r9c1=5
Hidden Single: r1c8=5
Hidden Single: r9c9=9
Naked Single: r2c9=6
Hidden Single: r7c3=9
Hidden Single: r8c4=5
Naked Single: r8c7=7
Hidden Single: r2c5=5
Hidden Single: r8c5=1
Naked Single: r9c6=7
Naked Single: r9c4=6
Full House: r7c5=2
Naked Single: r9c8=8
Full House: r9c2=1
Naked Single: r7c2=4
Naked Single: r8c8=4
Naked Single: r7c9=5
Full House: r7c7=6
Hidden Single: r2c7=9
Naked Single: r3c7=3
Full House: r4c7=5
Naked Single: r3c8=2
Full House: r1c9=4
Naked Single: r1c6=1
Naked Single: r2c6=8
Naked Single: r2c2=3
Full House: r2c3=1
Naked Single: r5c6=2
Full House: r4c6=4
Hidden Single: r5c1=1
Hidden Single: r3c4=4
Hidden Single: r4c1=3
Hidden Single: r6c3=4
Hidden Single: r4c5=6
Hidden Single: r6c1=6
Naked Single: r6c8=3
Full House: r5c8=6
Naked Single: r6c4=7
Naked Single: r1c4=9
Full House: r3c5=7
Full House: r5c4=3
Naked Single: r6c5=8
Full House: r5c5=9
Full House: r6c9=2
Naked Single: r1c1=2
Full House: r1c2=7
Naked Single: r3c3=8
Full House: r3c1=9
Full House: r8c1=8
Full House: r8c3=2
Full House: r4c3=7
Naked Single: r5c2=8
Full House: r4c2=2
Full House: r4c9=8
Full House: r5c9=7
|
sudoku_normal_hard_14
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
921.56..4.48....2..3..1.5..26.5...9..54.9.8.2819..7..5.92.85.6..7....2.81..4....3
|
921856374548739126637214589263548791754691832819327645392185467475963218186472953
|
9 2 1 . 5 6 . . 4
. 4 8 . . . . 2 .
. 3 . . 1 . 5 . .
2 6 . 5 . . . 9 .
. 5 4 . 9 . 8 . 2
8 1 9 . . 7 . . 5
. 9 2 . 8 5 . 6 .
. 7 . . . . 2 . 8
1 . . 4 . . . . 3
|
9 2 1 8 5 6 3 7 4
5 4 8 7 3 9 1 2 6
6 3 7 2 1 4 5 8 9
2 6 3 5 4 8 7 9 1
7 5 4 6 9 1 8 3 2
8 1 9 3 2 7 6 4 5
3 9 2 1 8 5 4 6 7
4 7 5 9 6 3 2 1 8
1 8 6 4 7 2 9 5 3
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2009h2
|
921856374548739126637214589263548791754691832819327645392185467475963218186472953 #1 Medium (534)
Hidden Single: r6c3=9
Hidden Single: r1c2=2
Hidden Single: r5c9=2
Hidden Single: r1c3=1
Hidden Single: r1c5=5
Locked Candidates Type 2 (Claiming): 5 in c3 => r7c12,r8c1,r9c2<>5
Hidden Single: r7c6=5
Naked Triple: 3,7,8 in r1c78,r3c8 => r2c7<>3, r2c79,r3c9<>7, r3c9<>8
Hidden Single: r8c9=8
Hidden Single: r6c1=8
Naked Single: r4c2=6
Naked Single: r5c2=5
Naked Single: r2c2=4
Naked Single: r7c2=9
Full House: r9c2=8
Hidden Single: r4c6=8
Hidden Single: r6c7=6
Hidden Single: r5c4=6
Hidden Single: r2c1=5
Hidden Single: r3c6=4
Hidden Single: r9c7=9
Naked Single: r2c7=1
Naked Single: r9c6=2
Hidden Single: r5c6=1
Hidden Single: r2c9=6
Naked Single: r3c9=9
Hidden Single: r3c4=2
Naked Single: r6c4=3
Naked Single: r4c5=4
Full House: r6c5=2
Full House: r6c8=4
Hidden Single: r4c9=1
Full House: r7c9=7
Naked Single: r7c4=1
Naked Single: r7c7=4
Full House: r7c1=3
Naked Single: r9c8=5
Full House: r8c8=1
Naked Single: r8c4=9
Naked Single: r5c1=7
Full House: r4c3=3
Full House: r5c8=3
Full House: r4c7=7
Full House: r1c7=3
Naked Single: r9c3=6
Full House: r9c5=7
Naked Single: r2c4=7
Full House: r1c4=8
Full House: r1c8=7
Full House: r3c8=8
Naked Single: r8c6=3
Full House: r2c6=9
Full House: r2c5=3
Full House: r8c5=6
Naked Single: r3c1=6
Full House: r3c3=7
Full House: r8c1=4
Full House: r8c3=5
|
sudoku_normal_extremely_hard_14
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
9....6..4..8....2..3..1.5..2..5...9...4.9.8...1...7..5..2.8..6..7....2..1..4....3
|
921856374548739126637214589263548791754691832819327645392185467475963218186472953
|
9 . . . . 6 . . 4
. . 8 . . . . 2 .
. 3 . . 1 . 5 . .
2 . . 5 . . . 9 .
. . 4 . 9 . 8 . .
. 1 . . . 7 . . 5
. . 2 . 8 . . 6 .
. 7 . . . . 2 . .
1 . . 4 . . . . 3
|
9 2 1 8 5 6 3 7 4
5 4 8 7 3 9 1 2 6
6 3 7 2 1 4 5 8 9
2 6 3 5 4 8 7 9 1
7 5 4 6 9 1 8 3 2
8 1 9 3 2 7 6 4 5
3 9 2 1 8 5 4 6 7
4 7 5 9 6 3 2 1 8
1 8 6 4 7 2 9 5 3
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2009h2
|
921856374548739126637214589263548791754691832819327645392185467475963218186472953 #1 Medium (534)
Hidden Single: r6c3=9
Hidden Single: r1c2=2
Hidden Single: r5c9=2
Hidden Single: r1c3=1
Hidden Single: r1c5=5
Locked Candidates Type 2 (Claiming): 5 in c3 => r7c12,r8c1,r9c2<>5
Hidden Single: r7c6=5
Naked Triple: 3,7,8 in r1c78,r3c8 => r2c7<>3, r2c79,r3c9<>7, r3c9<>8
Hidden Single: r8c9=8
Hidden Single: r6c1=8
Naked Single: r4c2=6
Naked Single: r5c2=5
Naked Single: r2c2=4
Naked Single: r7c2=9
Full House: r9c2=8
Hidden Single: r4c6=8
Hidden Single: r6c7=6
Hidden Single: r5c4=6
Hidden Single: r2c1=5
Hidden Single: r3c6=4
Hidden Single: r9c7=9
Naked Single: r2c7=1
Naked Single: r9c6=2
Hidden Single: r5c6=1
Hidden Single: r2c9=6
Naked Single: r3c9=9
Hidden Single: r3c4=2
Naked Single: r6c4=3
Naked Single: r4c5=4
Full House: r6c5=2
Full House: r6c8=4
Hidden Single: r4c9=1
Full House: r7c9=7
Naked Single: r7c4=1
Naked Single: r7c7=4
Full House: r7c1=3
Naked Single: r9c8=5
Full House: r8c8=1
Naked Single: r8c4=9
Naked Single: r5c1=7
Full House: r4c3=3
Full House: r5c8=3
Full House: r4c7=7
Full House: r1c7=3
Naked Single: r9c3=6
Full House: r9c5=7
Naked Single: r2c4=7
Full House: r1c4=8
Full House: r1c8=7
Full House: r3c8=8
Naked Single: r8c6=3
Full House: r2c6=9
Full House: r2c5=3
Full House: r8c5=6
Naked Single: r3c1=6
Full House: r3c3=7
Full House: r8c1=4
Full House: r8c3=5
|
sudoku_normal_hard_15
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.8...5.243..2..17...2.71.9..1....3457385.4962..6...781.2..5.83...4..3.179..1...5.
|
187935624395246178462871593219768345738514962546329781621457839854693217973182456
|
. 8 . . . 5 . 2 4
3 . . 2 . . 1 7 .
. . 2 . 7 1 . 9 .
. 1 . . . . 3 4 5
7 3 8 5 . 4 9 6 2
. . 6 . . . 7 8 1
. 2 . . 5 . 8 3 .
. . 4 . . 3 . 1 7
9 . . 1 . . . 5 .
|
1 8 7 9 3 5 6 2 4
3 9 5 2 4 6 1 7 8
4 6 2 8 7 1 5 9 3
2 1 9 7 6 8 3 4 5
7 3 8 5 1 4 9 6 2
5 4 6 3 2 9 7 8 1
6 2 1 4 5 7 8 3 9
8 5 4 6 9 3 2 1 7
9 7 3 1 8 2 4 5 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2110h2
|
187935624395246178462871593219768345738514962546329781621457839854693217973182456 #1 Medium (300)
Naked Pair: 1,6 in r17c1 => r38c1<>1, r38c1<>6
Hidden Single: r3c6=1
Hidden Single: r8c8=1
Naked Single: r5c8=6
Naked Single: r2c8=7
Naked Single: r5c7=9
Naked Single: r4c8=4
Naked Single: r4c9=5
Naked Single: r5c2=3
Naked Single: r7c8=3
Full House: r1c8=2
Naked Single: r6c7=7
Full House: r6c9=1
Naked Single: r5c3=8
Full House: r5c5=1
Naked Single: r9c9=6
Naked Single: r1c7=6
Naked Single: r4c1=2
Naked Single: r4c3=9
Naked Single: r2c9=8
Naked Single: r7c9=9
Full House: r3c9=3
Full House: r3c7=5
Naked Single: r8c7=2
Full House: r9c7=4
Naked Single: r9c2=7
Naked Single: r1c1=1
Naked Single: r2c3=5
Naked Single: r3c1=4
Naked Single: r7c3=1
Naked Single: r9c3=3
Full House: r1c3=7
Naked Single: r7c1=6
Naked Single: r3c2=6
Full House: r2c2=9
Full House: r3c4=8
Naked Single: r6c1=5
Full House: r6c2=4
Full House: r8c2=5
Full House: r8c1=8
Naked Single: r7c6=7
Full House: r7c4=4
Naked Single: r2c6=6
Full House: r2c5=4
Naked Single: r4c6=8
Naked Single: r4c5=6
Full House: r4c4=7
Naked Single: r9c6=2
Full House: r6c6=9
Full House: r9c5=8
Naked Single: r8c5=9
Full House: r8c4=6
Naked Single: r6c4=3
Full House: r1c4=9
Full House: r1c5=3
Full House: r6c5=2
|
sudoku_normal_extremely_hard_15
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.8...5..43..2..1....2.7..9..1....3..7..5.4..2..6....8..2..5.8....4..3..79..1...5.
|
187935624395246178462871593219768345738514962546329781621457839854693217973182456
|
. 8 . . . 5 . . 4
3 . . 2 . . 1 . .
. . 2 . 7 . . 9 .
. 1 . . . . 3 . .
7 . . 5 . 4 . . 2
. . 6 . . . . 8 .
. 2 . . 5 . 8 . .
. . 4 . . 3 . . 7
9 . . 1 . . . 5 .
|
1 8 7 9 3 5 6 2 4
3 9 5 2 4 6 1 7 8
4 6 2 8 7 1 5 9 3
2 1 9 7 6 8 3 4 5
7 3 8 5 1 4 9 6 2
5 4 6 3 2 9 7 8 1
6 2 1 4 5 7 8 3 9
8 5 4 6 9 3 2 1 7
9 7 3 1 8 2 4 5 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2110h2
|
187935624395246178462871593219768345738514962546329781621457839854693217973182456 #1 Medium (300)
Naked Pair: 1,6 in r17c1 => r38c1<>1, r38c1<>6
Hidden Single: r3c6=1
Hidden Single: r8c8=1
Naked Single: r5c8=6
Naked Single: r2c8=7
Naked Single: r5c7=9
Naked Single: r4c8=4
Naked Single: r4c9=5
Naked Single: r5c2=3
Naked Single: r7c8=3
Full House: r1c8=2
Naked Single: r6c7=7
Full House: r6c9=1
Naked Single: r5c3=8
Full House: r5c5=1
Naked Single: r9c9=6
Naked Single: r1c7=6
Naked Single: r4c1=2
Naked Single: r4c3=9
Naked Single: r2c9=8
Naked Single: r7c9=9
Full House: r3c9=3
Full House: r3c7=5
Naked Single: r8c7=2
Full House: r9c7=4
Naked Single: r9c2=7
Naked Single: r1c1=1
Naked Single: r2c3=5
Naked Single: r3c1=4
Naked Single: r7c3=1
Naked Single: r9c3=3
Full House: r1c3=7
Naked Single: r7c1=6
Naked Single: r3c2=6
Full House: r2c2=9
Full House: r3c4=8
Naked Single: r6c1=5
Full House: r6c2=4
Full House: r8c2=5
Full House: r8c1=8
Naked Single: r7c6=7
Full House: r7c4=4
Naked Single: r2c6=6
Full House: r2c5=4
Naked Single: r4c6=8
Naked Single: r4c5=6
Full House: r4c4=7
Naked Single: r9c6=2
Full House: r6c6=9
Full House: r9c5=8
Naked Single: r8c5=9
Full House: r8c4=6
Naked Single: r6c4=3
Full House: r1c4=9
Full House: r1c5=3
Full House: r6c5=2
|
sudoku_normal_hard_16
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..47..3..1....8..2..9.4..5..6.1.75..5...9...1..18.5.3..8..1.27.3.257...9..7.826..
|
854721396136958742729643158968137524573294861241865937685419273312576489497382615
|
. . 4 7 . . 3 . .
1 . . . . 8 . . 2
. . 9 . 4 . . 5 .
. 6 . 1 . 7 5 . .
5 . . . 9 . . . 1
. . 1 8 . 5 . 3 .
. 8 . . 1 . 2 7 .
3 . 2 5 7 . . . 9
. . 7 . 8 2 6 . .
|
8 5 4 7 2 1 3 9 6
1 3 6 9 5 8 7 4 2
7 2 9 6 4 3 1 5 8
9 6 8 1 3 7 5 2 4
5 7 3 2 9 4 8 6 1
2 4 1 8 6 5 9 3 7
6 8 5 4 1 9 2 7 3
3 1 2 5 7 6 4 8 9
4 9 7 3 8 2 6 1 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2109h2
|
854721396136958742729643158968137524573294861241865937685419273312576489497382615 #1 Medium (784)
Hidden Single: r8c5=7
Hidden Single: r9c5=8
Locked Candidates Type 1 (Pointing): 8 in b1 => r4c1<>8
Locked Candidates Type 1 (Pointing): 5 in b9 => r46c9<>5
Naked Triple: 1,4,8 in r8c78,r9c8 => r7c89,r9c9<>4
Naked Single: r7c8=7
Locked Candidates Type 2 (Claiming): 4 in c9 => r4c78,r5c78,r6c7<>4
Hidden Pair: 1,9 in r1c68 => r1c6<>5, r1c68<>6, r1c8<>8
Hidden Single: r6c6=5
Hidden Single: r4c7=5
Hidden Single: r4c4=1
Locked Candidates Type 1 (Pointing): 4 in b5 => r5c2<>4
Hidden Triple: 1,4,9 in r689c2 => r68c2<>2, r6c2<>7, r9c2<>5
Hidden Single: r8c3=2
Naked Single: r6c3=1
Hidden Single: r9c9=5
Naked Single: r7c9=3
Hidden Single: r7c3=5
Hidden Single: r8c6=6
Hidden Single: r9c4=3
Hidden Single: r2c3=6
Naked Single: r2c4=9
Naked Single: r1c6=1
Naked Single: r2c8=4
Naked Single: r7c4=4
Full House: r7c6=9
Full House: r7c1=6
Naked Single: r1c8=9
Naked Single: r3c6=3
Full House: r5c6=4
Naked Single: r2c7=7
Naked Single: r9c8=1
Naked Single: r2c5=5
Full House: r2c2=3
Naked Single: r5c7=8
Naked Single: r6c7=9
Naked Single: r8c8=8
Full House: r8c7=4
Full House: r3c7=1
Full House: r8c2=1
Naked Single: r4c8=2
Full House: r5c8=6
Naked Single: r4c9=4
Full House: r6c9=7
Naked Single: r5c3=3
Full House: r4c3=8
Naked Single: r6c2=4
Naked Single: r4c5=3
Full House: r4c1=9
Naked Single: r5c4=2
Full House: r3c4=6
Full House: r5c2=7
Full House: r6c1=2
Full House: r6c5=6
Full House: r1c5=2
Naked Single: r9c2=9
Full House: r9c1=4
Naked Single: r3c9=8
Full House: r1c9=6
Naked Single: r3c2=2
Full House: r1c2=5
Full House: r1c1=8
Full House: r3c1=7
|
sudoku_normal_extremely_hard_16
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..47..3..1....8..2..9.4..5..6...7...5...9...1...8...3..8..1.2..3..5....9..7..26..
|
854721396136958742729643158968137524573294861241865937685419273312576489497382615
|
. . 4 7 . . 3 . .
1 . . . . 8 . . 2
. . 9 . 4 . . 5 .
. 6 . . . 7 . . .
5 . . . 9 . . . 1
. . . 8 . . . 3 .
. 8 . . 1 . 2 . .
3 . . 5 . . . . 9
. . 7 . . 2 6 . .
|
8 5 4 7 2 1 3 9 6
1 3 6 9 5 8 7 4 2
7 2 9 6 4 3 1 5 8
9 6 8 1 3 7 5 2 4
5 7 3 2 9 4 8 6 1
2 4 1 8 6 5 9 3 7
6 8 5 4 1 9 2 7 3
3 1 2 5 7 6 4 8 9
4 9 7 3 8 2 6 1 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2109h2
|
854721396136958742729643158968137524573294861241865937685419273312576489497382615 #1 Medium (784)
Hidden Single: r8c5=7
Hidden Single: r9c5=8
Locked Candidates Type 1 (Pointing): 8 in b1 => r4c1<>8
Locked Candidates Type 1 (Pointing): 5 in b9 => r46c9<>5
Naked Triple: 1,4,8 in r8c78,r9c8 => r7c89,r9c9<>4
Naked Single: r7c8=7
Locked Candidates Type 2 (Claiming): 4 in c9 => r4c78,r5c78,r6c7<>4
Hidden Pair: 1,9 in r1c68 => r1c6<>5, r1c68<>6, r1c8<>8
Hidden Single: r6c6=5
Hidden Single: r4c7=5
Hidden Single: r4c4=1
Locked Candidates Type 1 (Pointing): 4 in b5 => r5c2<>4
Hidden Triple: 1,4,9 in r689c2 => r68c2<>2, r6c2<>7, r9c2<>5
Hidden Single: r8c3=2
Naked Single: r6c3=1
Hidden Single: r9c9=5
Naked Single: r7c9=3
Hidden Single: r7c3=5
Hidden Single: r8c6=6
Hidden Single: r9c4=3
Hidden Single: r2c3=6
Naked Single: r2c4=9
Naked Single: r1c6=1
Naked Single: r2c8=4
Naked Single: r7c4=4
Full House: r7c6=9
Full House: r7c1=6
Naked Single: r1c8=9
Naked Single: r3c6=3
Full House: r5c6=4
Naked Single: r2c7=7
Naked Single: r9c8=1
Naked Single: r2c5=5
Full House: r2c2=3
Naked Single: r5c7=8
Naked Single: r6c7=9
Naked Single: r8c8=8
Full House: r8c7=4
Full House: r3c7=1
Full House: r8c2=1
Naked Single: r4c8=2
Full House: r5c8=6
Naked Single: r4c9=4
Full House: r6c9=7
Naked Single: r5c3=3
Full House: r4c3=8
Naked Single: r6c2=4
Naked Single: r4c5=3
Full House: r4c1=9
Naked Single: r5c4=2
Full House: r3c4=6
Full House: r5c2=7
Full House: r6c1=2
Full House: r6c5=6
Full House: r1c5=2
Naked Single: r9c2=9
Full House: r9c1=4
Naked Single: r3c9=8
Full House: r1c9=6
Naked Single: r3c2=2
Full House: r1c2=5
Full House: r1c1=8
Full House: r3c1=7
|
sudoku_normal_hard_17
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
428.65.9.567.914.2139.246....5..9..1...1.....21.4..8....157..466..9..3...8.6....5
|
428765193567391482139824657845239761973186524216457839391578246654912378782643915
|
4 2 8 . 6 5 . 9 .
5 6 7 . 9 1 4 . 2
1 3 9 . 2 4 6 . .
. . 5 . . 9 . . 1
. . . 1 . . . . .
2 1 . 4 . . 8 . .
. . 1 5 7 . . 4 6
6 . . 9 . . 3 . .
. 8 . 6 . . . . 5
|
4 2 8 7 6 5 1 9 3
5 6 7 3 9 1 4 8 2
1 3 9 8 2 4 6 5 7
8 4 5 2 3 9 7 6 1
9 7 3 1 8 6 5 2 4
2 1 6 4 5 7 8 3 9
3 9 1 5 7 8 2 4 6
6 5 4 9 1 2 3 7 8
7 8 2 6 4 3 9 1 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2209m
|
428765193567391482139824657845239761973186524216457839391578246654912378782643915 #1 Easy (328)
Hidden Single: r2c5=9
Hidden Single: r7c9=6
Hidden Single: r5c4=1
Hidden Single: r2c7=4
Hidden Single: r3c6=4
Hidden Single: r2c2=6
Hidden Single: r1c5=6
Hidden Single: r3c1=1
Naked Single: r1c2=2
Naked Single: r1c3=8
Naked Single: r2c1=5
Full House: r3c3=9
Hidden Single: r6c2=1
Hidden Single: r7c4=5
Naked Single: r7c2=9
Naked Single: r7c1=3
Naked Single: r7c7=2
Full House: r7c6=8
Naked Single: r9c1=7
Naked Single: r4c7=7
Naked Single: r8c6=2
Naked Single: r4c1=8
Full House: r5c1=9
Naked Single: r9c8=1
Naked Single: r1c7=1
Naked Single: r4c2=4
Naked Single: r8c3=4
Naked Single: r9c6=3
Naked Single: r4c5=3
Naked Single: r5c7=5
Full House: r9c7=9
Naked Single: r5c2=7
Full House: r8c2=5
Full House: r9c3=2
Full House: r9c5=4
Full House: r8c5=1
Naked Single: r4c4=2
Full House: r4c8=6
Naked Single: r6c5=5
Full House: r5c5=8
Naked Single: r5c6=6
Full House: r6c6=7
Naked Single: r6c8=3
Naked Single: r5c3=3
Full House: r6c3=6
Full House: r6c9=9
Naked Single: r2c8=8
Full House: r2c4=3
Naked Single: r5c8=2
Full House: r5c9=4
Naked Single: r3c9=7
Naked Single: r8c8=7
Full House: r3c8=5
Full House: r1c9=3
Full House: r1c4=7
Full House: r3c4=8
Full House: r8c9=8
|
sudoku_normal_extremely_hard_17
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
4....5.9...7..1..2.3..2.6....5..9..1.........2..4..8....1.7..4.6..9..3...8.6....5
|
428765193567391482139824657845239761973186524216457839391578246654912378782643915
|
4 . . . . 5 . 9 .
. . 7 . . 1 . . 2
. 3 . . 2 . 6 . .
. . 5 . . 9 . . 1
. . . . . . . . .
2 . . 4 . . 8 . .
. . 1 . 7 . . 4 .
6 . . 9 . . 3 . .
. 8 . 6 . . . . 5
|
4 2 8 7 6 5 1 9 3
5 6 7 3 9 1 4 8 2
1 3 9 8 2 4 6 5 7
8 4 5 2 3 9 7 6 1
9 7 3 1 8 6 5 2 4
2 1 6 4 5 7 8 3 9
3 9 1 5 7 8 2 4 6
6 5 4 9 1 2 3 7 8
7 8 2 6 4 3 9 1 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2209m
|
428765193567391482139824657845239761973186524216457839391578246654912378782643915 #1 Easy (328)
Hidden Single: r2c5=9
Hidden Single: r7c9=6
Hidden Single: r5c4=1
Hidden Single: r2c7=4
Hidden Single: r3c6=4
Hidden Single: r2c2=6
Hidden Single: r1c5=6
Hidden Single: r3c1=1
Naked Single: r1c2=2
Naked Single: r1c3=8
Naked Single: r2c1=5
Full House: r3c3=9
Hidden Single: r6c2=1
Hidden Single: r7c4=5
Naked Single: r7c2=9
Naked Single: r7c1=3
Naked Single: r7c7=2
Full House: r7c6=8
Naked Single: r9c1=7
Naked Single: r4c7=7
Naked Single: r8c6=2
Naked Single: r4c1=8
Full House: r5c1=9
Naked Single: r9c8=1
Naked Single: r1c7=1
Naked Single: r4c2=4
Naked Single: r8c3=4
Naked Single: r9c6=3
Naked Single: r4c5=3
Naked Single: r5c7=5
Full House: r9c7=9
Naked Single: r5c2=7
Full House: r8c2=5
Full House: r9c3=2
Full House: r9c5=4
Full House: r8c5=1
Naked Single: r4c4=2
Full House: r4c8=6
Naked Single: r6c5=5
Full House: r5c5=8
Naked Single: r5c6=6
Full House: r6c6=7
Naked Single: r6c8=3
Naked Single: r5c3=3
Full House: r6c3=6
Full House: r6c9=9
Naked Single: r2c8=8
Full House: r2c4=3
Naked Single: r5c8=2
Full House: r5c9=4
Naked Single: r3c9=7
Naked Single: r8c8=7
Full House: r3c8=5
Full House: r1c9=3
Full House: r1c4=7
Full House: r3c4=8
Full House: r8c9=8
|
sudoku_normal_hard_18
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
2.49..81.5.1.6732.3...1..5..5...6..1.18...6..6..1...7..4..8...3.2.5.....1.7..94.5
|
274953816581467329369218754452876931718395642693142578945781263826534197137629485
|
2 . 4 9 . . 8 1 .
5 . 1 . 6 7 3 2 .
3 . . . 1 . . 5 .
. 5 . . . 6 . . 1
. 1 8 . . . 6 . .
6 . . 1 . . . 7 .
. 4 . . 8 . . . 3
. 2 . 5 . . . . .
1 . 7 . . 9 4 . 5
|
2 7 4 9 5 3 8 1 6
5 8 1 4 6 7 3 2 9
3 6 9 2 1 8 7 5 4
4 5 2 8 7 6 9 3 1
7 1 8 3 9 5 6 4 2
6 9 3 1 4 2 5 7 8
9 4 5 7 8 1 2 6 3
8 2 6 5 3 4 1 9 7
1 3 7 6 2 9 4 8 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2211h3
|
274953816581467329369218754452876931718395642693142578945781263826534197137629485 #1 Medium (628)
Locked Candidates Type 1 (Pointing): 4 in b3 => r56c9<>4
Locked Candidates Type 2 (Claiming): 4 in r6 => r4c45,r5c456<>4
Locked Candidates Type 2 (Claiming): 4 in c4 => r2c5,r3c6<>4
Naked Triple: 2,3,9 in r46c3,r6c2 => r45c1<>2, r45c1,r5c2<>9, r5c2<>3
Hidden Single: r1c1=2
Locked Candidates Type 1 (Pointing): 5 in b1 => r2c5<>5
Locked Candidates Type 1 (Pointing): 7 in b1 => r5c2<>7
Naked Single: r5c2=1
Hidden Single: r1c8=1
Hidden Single: r9c1=1
Hidden Single: r2c7=3
Naked Single: r2c5=6
Hidden Single: r2c3=1
Hidden Single: r9c9=5
Hidden Single: r2c1=5
Naked Single: r7c1=9
Naked Single: r7c8=6
Naked Single: r8c1=8
Naked Single: r7c3=5
Naked Single: r9c8=8
Naked Single: r8c8=9
Naked Single: r8c9=7
Naked Single: r1c9=6
Naked Single: r8c7=1
Full House: r7c7=2
Naked Single: r1c2=7
Naked Single: r4c7=9
Naked Single: r7c4=7
Full House: r7c6=1
Naked Single: r3c7=7
Full House: r6c7=5
Naked Single: r5c9=2
Naked Single: r5c4=3
Naked Single: r6c9=8
Naked Single: r5c6=5
Naked Single: r5c8=4
Full House: r4c8=3
Naked Single: r1c6=3
Full House: r1c5=5
Naked Single: r5c1=7
Full House: r4c1=4
Full House: r5c5=9
Naked Single: r4c3=2
Naked Single: r8c6=4
Naked Single: r4c4=8
Full House: r4c5=7
Naked Single: r6c6=2
Full House: r3c6=8
Full House: r6c5=4
Naked Single: r8c5=3
Full House: r8c3=6
Full House: r9c5=2
Full House: r9c2=3
Full House: r9c4=6
Naked Single: r2c4=4
Full House: r3c4=2
Naked Single: r3c3=9
Full House: r6c3=3
Full House: r6c2=9
Naked Single: r2c9=9
Full House: r2c2=8
Full House: r3c2=6
Full House: r3c9=4
|
sudoku_normal_extremely_hard_18
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..49..8.......7.2.3...1..5..5...6..1..8...6..6..1...7..4..8...3.2.5.......7..94..
|
274953816581467329369218754452876931718395642693142578945781263826534197137629485
|
. . 4 9 . . 8 . .
. . . . . 7 . 2 .
3 . . . 1 . . 5 .
. 5 . . . 6 . . 1
. . 8 . . . 6 . .
6 . . 1 . . . 7 .
. 4 . . 8 . . . 3
. 2 . 5 . . . . .
. . 7 . . 9 4 . .
|
2 7 4 9 5 3 8 1 6
5 8 1 4 6 7 3 2 9
3 6 9 2 1 8 7 5 4
4 5 2 8 7 6 9 3 1
7 1 8 3 9 5 6 4 2
6 9 3 1 4 2 5 7 8
9 4 5 7 8 1 2 6 3
8 2 6 5 3 4 1 9 7
1 3 7 6 2 9 4 8 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2211h3
|
274953816581467329369218754452876931718395642693142578945781263826534197137629485 #1 Medium (628)
Locked Candidates Type 1 (Pointing): 4 in b3 => r56c9<>4
Locked Candidates Type 2 (Claiming): 4 in r6 => r4c45,r5c456<>4
Locked Candidates Type 2 (Claiming): 4 in c4 => r2c5,r3c6<>4
Naked Triple: 2,3,9 in r46c3,r6c2 => r45c1<>2, r45c1,r5c2<>9, r5c2<>3
Hidden Single: r1c1=2
Locked Candidates Type 1 (Pointing): 5 in b1 => r2c5<>5
Locked Candidates Type 1 (Pointing): 7 in b1 => r5c2<>7
Naked Single: r5c2=1
Hidden Single: r1c8=1
Hidden Single: r9c1=1
Hidden Single: r2c7=3
Naked Single: r2c5=6
Hidden Single: r2c3=1
Hidden Single: r9c9=5
Hidden Single: r2c1=5
Naked Single: r7c1=9
Naked Single: r7c8=6
Naked Single: r8c1=8
Naked Single: r7c3=5
Naked Single: r9c8=8
Naked Single: r8c8=9
Naked Single: r8c9=7
Naked Single: r1c9=6
Naked Single: r8c7=1
Full House: r7c7=2
Naked Single: r1c2=7
Naked Single: r4c7=9
Naked Single: r7c4=7
Full House: r7c6=1
Naked Single: r3c7=7
Full House: r6c7=5
Naked Single: r5c9=2
Naked Single: r5c4=3
Naked Single: r6c9=8
Naked Single: r5c6=5
Naked Single: r5c8=4
Full House: r4c8=3
Naked Single: r1c6=3
Full House: r1c5=5
Naked Single: r5c1=7
Full House: r4c1=4
Full House: r5c5=9
Naked Single: r4c3=2
Naked Single: r8c6=4
Naked Single: r4c4=8
Full House: r4c5=7
Naked Single: r6c6=2
Full House: r3c6=8
Full House: r6c5=4
Naked Single: r8c5=3
Full House: r8c3=6
Full House: r9c5=2
Full House: r9c2=3
Full House: r9c4=6
Naked Single: r2c4=4
Full House: r3c4=2
Naked Single: r3c3=9
Full House: r6c3=3
Full House: r6c2=9
Naked Single: r2c9=9
Full House: r2c2=8
Full House: r3c2=6
Full House: r3c9=4
|
sudoku_normal_hard_19
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.4.69...71....3.9.95318726.7392.6.....6.4.7.9.....965...1.7...669.8...718...61.4.
|
248695137167423895953187264739256418516348729482719653321574986694832571875961342
|
. 4 . 6 9 . . . 7
1 . . . . 3 . 9 .
9 5 3 1 8 7 2 6 .
7 3 9 2 . 6 . . .
. . 6 . 4 . 7 . 9
. . . . . 9 6 5 .
. . 1 . 7 . . . 6
6 9 . 8 . . . 7 1
8 . . . 6 1 . 4 .
|
2 4 8 6 9 5 1 3 7
1 6 7 4 2 3 8 9 5
9 5 3 1 8 7 2 6 4
7 3 9 2 5 6 4 1 8
5 1 6 3 4 8 7 2 9
4 8 2 7 1 9 6 5 3
3 2 1 5 7 4 9 8 6
6 9 4 8 3 2 5 7 1
8 7 5 9 6 1 3 4 2
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2403m
|
248695137167423895953187264739256418516348729482719653321574986694832571875961342 #1 Easy (344)
Hidden Single: r1c5=9
Hidden Single: r5c9=9
Hidden Single: r4c3=9
Hidden Single: r8c1=6
Hidden Single: r8c8=7
Hidden Single: r3c4=1
Hidden Single: r4c6=6
Hidden Single: r9c5=6
Hidden Single: r3c8=6
Hidden Single: r6c7=6
Hidden Single: r4c1=7
Hidden Single: r3c6=7
Naked Single: r3c2=5
Naked Single: r3c3=3
Full House: r3c9=4
Naked Single: r7c2=2
Naked Single: r1c1=2
Naked Single: r4c9=8
Naked Single: r9c2=7
Naked Single: r1c3=8
Naked Single: r1c6=5
Naked Single: r5c1=5
Naked Single: r6c1=4
Full House: r7c1=3
Naked Single: r2c9=5
Naked Single: r4c8=1
Naked Single: r9c3=5
Full House: r8c3=4
Naked Single: r2c2=6
Full House: r2c3=7
Full House: r6c3=2
Naked Single: r2c4=4
Full House: r2c5=2
Full House: r2c7=8
Naked Single: r5c6=8
Naked Single: r7c6=4
Full House: r8c6=2
Naked Single: r5c4=3
Naked Single: r7c8=8
Naked Single: r1c8=3
Full House: r5c8=2
Full House: r5c2=1
Full House: r1c7=1
Full House: r6c2=8
Naked Single: r4c5=5
Full House: r4c7=4
Full House: r6c9=3
Full House: r9c9=2
Naked Single: r6c4=7
Full House: r6c5=1
Full House: r8c5=3
Full House: r8c7=5
Naked Single: r9c4=9
Full House: r7c4=5
Full House: r7c7=9
Full House: r9c7=3
|
sudoku_normal_extremely_hard_19
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.4.6....71....3.9.9...8.2...3.2.......6.4.7.......9.5...1.7...6.9.8....18....1.4.
|
248695137167423895953187264739256418516348729482719653321574986694832571875961342
|
. 4 . 6 . . . . 7
1 . . . . 3 . 9 .
9 . . . 8 . 2 . .
. 3 . 2 . . . . .
. . 6 . 4 . 7 . .
. . . . . 9 . 5 .
. . 1 . 7 . . . 6
. 9 . 8 . . . . 1
8 . . . . 1 . 4 .
|
2 4 8 6 9 5 1 3 7
1 6 7 4 2 3 8 9 5
9 5 3 1 8 7 2 6 4
7 3 9 2 5 6 4 1 8
5 1 6 3 4 8 7 2 9
4 8 2 7 1 9 6 5 3
3 2 1 5 7 4 9 8 6
6 9 4 8 3 2 5 7 1
8 7 5 9 6 1 3 4 2
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2403m
|
248695137167423895953187264739256418516348729482719653321574986694832571875961342 #1 Easy (344)
Hidden Single: r1c5=9
Hidden Single: r5c9=9
Hidden Single: r4c3=9
Hidden Single: r8c1=6
Hidden Single: r8c8=7
Hidden Single: r3c4=1
Hidden Single: r4c6=6
Hidden Single: r9c5=6
Hidden Single: r3c8=6
Hidden Single: r6c7=6
Hidden Single: r4c1=7
Hidden Single: r3c6=7
Naked Single: r3c2=5
Naked Single: r3c3=3
Full House: r3c9=4
Naked Single: r7c2=2
Naked Single: r1c1=2
Naked Single: r4c9=8
Naked Single: r9c2=7
Naked Single: r1c3=8
Naked Single: r1c6=5
Naked Single: r5c1=5
Naked Single: r6c1=4
Full House: r7c1=3
Naked Single: r2c9=5
Naked Single: r4c8=1
Naked Single: r9c3=5
Full House: r8c3=4
Naked Single: r2c2=6
Full House: r2c3=7
Full House: r6c3=2
Naked Single: r2c4=4
Full House: r2c5=2
Full House: r2c7=8
Naked Single: r5c6=8
Naked Single: r7c6=4
Full House: r8c6=2
Naked Single: r5c4=3
Naked Single: r7c8=8
Naked Single: r1c8=3
Full House: r5c8=2
Full House: r5c2=1
Full House: r1c7=1
Full House: r6c2=8
Naked Single: r4c5=5
Full House: r4c7=4
Full House: r6c9=3
Full House: r9c9=2
Naked Single: r6c4=7
Full House: r6c5=1
Full House: r8c5=3
Full House: r8c7=5
Naked Single: r9c4=9
Full House: r7c4=5
Full House: r7c7=9
Full House: r9c7=3
|
sudoku_normal_hard_20
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.9.1...2.217946538.....5.6...8.....3.6.....5.9.....8...2.6..385436582791.51..9.4.
|
695138427217946538384725169548261973163897254972453816729614385436582791851379642
|
. 9 . 1 . . . 2 .
2 1 7 9 4 6 5 3 8
. . . . . 5 . 6 .
. . 8 . . . . . 3
. 6 . . . . . 5 .
9 . . . . . 8 . .
. 2 . 6 . . 3 8 5
4 3 6 5 8 2 7 9 1
. 5 1 . . 9 . 4 .
|
6 9 5 1 3 8 4 2 7
2 1 7 9 4 6 5 3 8
3 8 4 7 2 5 1 6 9
5 4 8 2 6 1 9 7 3
1 6 3 8 9 7 2 5 4
9 7 2 4 5 3 8 1 6
7 2 9 6 1 4 3 8 5
4 3 6 5 8 2 7 9 1
8 5 1 3 7 9 6 4 2
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2205m
|
695138427217946538384725169548261973163897254972453816729614385436582791851379642 #1 Easy (228)
Naked Single: r8c2=3
Naked Single: r2c2=1
Naked Single: r8c6=2
Naked Single: r8c8=9
Naked Single: r8c4=5
Full House: r8c3=6
Naked Single: r2c8=3
Naked Single: r7c9=5
Naked Single: r9c3=1
Naked Single: r2c4=9
Naked Single: r2c6=6
Full House: r2c7=5
Naked Single: r7c8=8
Naked Single: r7c7=3
Naked Single: r7c3=9
Naked Single: r1c7=4
Naked Single: r7c1=7
Full House: r9c1=8
Naked Single: r1c9=7
Naked Single: r7c5=1
Full House: r7c6=4
Naked Single: r3c1=3
Naked Single: r1c5=3
Naked Single: r3c9=9
Full House: r3c7=1
Naked Single: r1c3=5
Naked Single: r3c3=4
Naked Single: r5c1=1
Naked Single: r1c6=8
Full House: r1c1=6
Full House: r3c2=8
Full House: r4c1=5
Naked Single: r9c5=7
Full House: r9c4=3
Naked Single: r3c5=2
Full House: r3c4=7
Naked Single: r5c5=9
Naked Single: r4c5=6
Full House: r6c5=5
Naked Single: r5c7=2
Naked Single: r4c7=9
Full House: r9c7=6
Full House: r9c9=2
Naked Single: r5c3=3
Full House: r6c3=2
Naked Single: r5c9=4
Full House: r6c9=6
Naked Single: r5c6=7
Full House: r5c4=8
Naked Single: r6c4=4
Full House: r4c4=2
Naked Single: r4c6=1
Full House: r6c6=3
Naked Single: r6c2=7
Full House: r4c2=4
Full House: r4c8=7
Full House: r6c8=1
|
sudoku_normal_extremely_hard_20
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.9.1...2.2.7.4...8.....5.6...8.....3.6.....5.9.....8...2.6.....4...8.7.1.5...9.4.
|
695138427217946538384725169548261973163897254972453816729614385436582791851379642
|
. 9 . 1 . . . 2 .
2 . 7 . 4 . . . 8
. . . . . 5 . 6 .
. . 8 . . . . . 3
. 6 . . . . . 5 .
9 . . . . . 8 . .
. 2 . 6 . . . . .
4 . . . 8 . 7 . 1
. 5 . . . 9 . 4 .
|
6 9 5 1 3 8 4 2 7
2 1 7 9 4 6 5 3 8
3 8 4 7 2 5 1 6 9
5 4 8 2 6 1 9 7 3
1 6 3 8 9 7 2 5 4
9 7 2 4 5 3 8 1 6
7 2 9 6 1 4 3 8 5
4 3 6 5 8 2 7 9 1
8 5 1 3 7 9 6 4 2
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2205m
|
695138427217946538384725169548261973163897254972453816729614385436582791851379642 #1 Easy (228)
Naked Single: r8c2=3
Naked Single: r2c2=1
Naked Single: r8c6=2
Naked Single: r8c8=9
Naked Single: r8c4=5
Full House: r8c3=6
Naked Single: r2c8=3
Naked Single: r7c9=5
Naked Single: r9c3=1
Naked Single: r2c4=9
Naked Single: r2c6=6
Full House: r2c7=5
Naked Single: r7c8=8
Naked Single: r7c7=3
Naked Single: r7c3=9
Naked Single: r1c7=4
Naked Single: r7c1=7
Full House: r9c1=8
Naked Single: r1c9=7
Naked Single: r7c5=1
Full House: r7c6=4
Naked Single: r3c1=3
Naked Single: r1c5=3
Naked Single: r3c9=9
Full House: r3c7=1
Naked Single: r1c3=5
Naked Single: r3c3=4
Naked Single: r5c1=1
Naked Single: r1c6=8
Full House: r1c1=6
Full House: r3c2=8
Full House: r4c1=5
Naked Single: r9c5=7
Full House: r9c4=3
Naked Single: r3c5=2
Full House: r3c4=7
Naked Single: r5c5=9
Naked Single: r4c5=6
Full House: r6c5=5
Naked Single: r5c7=2
Naked Single: r4c7=9
Full House: r9c7=6
Full House: r9c9=2
Naked Single: r5c3=3
Full House: r6c3=2
Naked Single: r5c9=4
Full House: r6c9=6
Naked Single: r5c6=7
Full House: r5c4=8
Naked Single: r6c4=4
Full House: r4c4=2
Naked Single: r4c6=1
Full House: r6c6=3
Naked Single: r6c2=7
Full House: r4c2=4
Full House: r4c8=7
Full House: r6c8=1
|
sudoku_normal_hard_21
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
23.5.18....12384...8....12.4..859..1.5..1..4231.642..816.....8...3.7621....1.5..6
|
234591867671238459589764123426859371958317642317642598165923784893476215742185936
|
2 3 . 5 . 1 8 . .
. . 1 2 3 8 4 . .
. 8 . . . . 1 2 .
4 . . 8 5 9 . . 1
. 5 . . 1 . . 4 2
3 1 . 6 4 2 . . 8
1 6 . . . . . 8 .
. . 3 . 7 6 2 1 .
. . . 1 . 5 . . 6
|
2 3 4 5 9 1 8 6 7
6 7 1 2 3 8 4 5 9
5 8 9 7 6 4 1 2 3
4 2 6 8 5 9 3 7 1
9 5 8 3 1 7 6 4 2
3 1 7 6 4 2 5 9 8
1 6 5 9 2 3 7 8 4
8 9 3 4 7 6 2 1 5
7 4 2 1 8 5 9 3 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2207e
|
234591867671238459589764123426859371958317642317642598165923784893476215742185936 #1 Easy (410)
Naked Single: r4c5=5
Naked Single: r5c5=1
Naked Single: r6c5=4
Hidden Single: r3c7=1
Hidden Single: r2c4=2
Hidden Single: r2c6=8
Hidden Single: r1c7=8
Hidden Single: r1c2=3
Hidden Single: r5c9=2
Hidden Single: r8c8=1
Hidden Single: r8c6=6
Hidden Single: r6c2=1
Hidden Single: r7c1=1
Hidden Single: r3c9=3
Hidden Single: r9c5=8
Hidden Single: r8c1=8
Hidden Single: r1c3=4
Hidden Single: r5c3=8
Hidden Single: r7c5=2
Hidden Single: r8c9=5
Hidden Single: r7c3=5
Hidden Single: r9c2=4
Naked Single: r8c2=9
Full House: r8c4=4
Naked Single: r2c2=7
Full House: r4c2=2
Naked Single: r9c1=7
Full House: r9c3=2
Naked Single: r7c6=3
Full House: r7c4=9
Naked Single: r2c9=9
Naked Single: r5c6=7
Full House: r3c6=4
Full House: r5c4=3
Full House: r3c4=7
Naked Single: r7c7=7
Full House: r7c9=4
Full House: r1c9=7
Naked Single: r1c8=6
Full House: r1c5=9
Full House: r2c8=5
Full House: r3c5=6
Full House: r2c1=6
Naked Single: r3c3=9
Full House: r3c1=5
Full House: r5c1=9
Full House: r5c7=6
Naked Single: r6c3=7
Full House: r4c3=6
Naked Single: r4c7=3
Full House: r4c8=7
Naked Single: r6c8=9
Full House: r6c7=5
Full House: r9c7=9
Full House: r9c8=3
|
sudoku_normal_extremely_hard_21
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
2..5.1.....1.3.4...8.....2.4..8.9..1.5.....4.3..6.2..8.6.....8...3.7.2.....1.5..6
|
234591867671238459589764123426859371958317642317642598165923784893476215742185936
|
2 . . 5 . 1 . . .
. . 1 . 3 . 4 . .
. 8 . . . . . 2 .
4 . . 8 . 9 . . 1
. 5 . . . . . 4 .
3 . . 6 . 2 . . 8
. 6 . . . . . 8 .
. . 3 . 7 . 2 . .
. . . 1 . 5 . . 6
|
2 3 4 5 9 1 8 6 7
6 7 1 2 3 8 4 5 9
5 8 9 7 6 4 1 2 3
4 2 6 8 5 9 3 7 1
9 5 8 3 1 7 6 4 2
3 1 7 6 4 2 5 9 8
1 6 5 9 2 3 7 8 4
8 9 3 4 7 6 2 1 5
7 4 2 1 8 5 9 3 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2207e
|
234591867671238459589764123426859371958317642317642598165923784893476215742185936 #1 Easy (410)
Naked Single: r4c5=5
Naked Single: r5c5=1
Naked Single: r6c5=4
Hidden Single: r3c7=1
Hidden Single: r2c4=2
Hidden Single: r2c6=8
Hidden Single: r1c7=8
Hidden Single: r1c2=3
Hidden Single: r5c9=2
Hidden Single: r8c8=1
Hidden Single: r8c6=6
Hidden Single: r6c2=1
Hidden Single: r7c1=1
Hidden Single: r3c9=3
Hidden Single: r9c5=8
Hidden Single: r8c1=8
Hidden Single: r1c3=4
Hidden Single: r5c3=8
Hidden Single: r7c5=2
Hidden Single: r8c9=5
Hidden Single: r7c3=5
Hidden Single: r9c2=4
Naked Single: r8c2=9
Full House: r8c4=4
Naked Single: r2c2=7
Full House: r4c2=2
Naked Single: r9c1=7
Full House: r9c3=2
Naked Single: r7c6=3
Full House: r7c4=9
Naked Single: r2c9=9
Naked Single: r5c6=7
Full House: r3c6=4
Full House: r5c4=3
Full House: r3c4=7
Naked Single: r7c7=7
Full House: r7c9=4
Full House: r1c9=7
Naked Single: r1c8=6
Full House: r1c5=9
Full House: r2c8=5
Full House: r3c5=6
Full House: r2c1=6
Naked Single: r3c3=9
Full House: r3c1=5
Full House: r5c1=9
Full House: r5c7=6
Naked Single: r6c3=7
Full House: r4c3=6
Naked Single: r4c7=3
Full House: r4c8=7
Naked Single: r6c8=9
Full House: r6c7=5
Full House: r9c7=9
Full House: r9c8=3
|
sudoku_normal_hard_22
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..3.5..7.71.8..3..9....7.6...2.86914....4.62.1..23958..9.17...8..7..8.3..81.9.7..
|
643952871715864392928317465532786914879541623164239587396175248457628139281493756
|
. . 3 . 5 . . 7 .
7 1 . 8 . . 3 . .
9 . . . . 7 . 6 .
. . 2 . 8 6 9 1 4
. . . . 4 . 6 2 .
1 . . 2 3 9 5 8 .
. 9 . 1 7 . . . 8
. . 7 . . 8 . 3 .
. 8 1 . 9 . 7 . .
|
6 4 3 9 5 2 8 7 1
7 1 5 8 6 4 3 9 2
9 2 8 3 1 7 4 6 5
5 3 2 7 8 6 9 1 4
8 7 9 5 4 1 6 2 3
1 6 4 2 3 9 5 8 7
3 9 6 1 7 5 2 4 8
4 5 7 6 2 8 1 3 9
2 8 1 4 9 3 7 5 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2208h1
|
643952871715864392928317465532786914879541623164239587396175248457628139281493756 #1 Medium (504)
Hidden Single: r2c1=7
Hidden Single: r9c3=1
Hidden Single: r7c5=7
Locked Candidates Type 1 (Pointing): 8 in b3 => r45c7<>8
Locked Candidates Type 1 (Pointing): 3 in b7 => r45c1<>3
Locked Candidates Type 2 (Claiming): 1 in c8 => r45c7,r5c9<>1
Naked Single: r4c7=9
Naked Single: r6c8=8
Naked Single: r4c8=1
Naked Single: r6c5=3
Naked Single: r5c8=2
Naked Single: r4c5=8
Naked Single: r6c6=9
Naked Single: r5c7=6
Naked Single: r4c1=5
Naked Single: r6c9=7
Full House: r5c9=3
Naked Single: r4c4=7
Full House: r4c2=3
Naked Single: r5c1=8
Naked Single: r5c2=7
Naked Single: r5c4=5
Full House: r5c6=1
Full House: r5c3=9
Hidden Single: r2c8=9
Hidden Single: r8c9=9
Hidden Single: r3c5=1
Hidden Single: r3c4=3
Hidden Single: r1c4=9
Hidden Single: r1c7=8
Hidden Single: r3c3=8
Hidden Single: r8c7=1
Hidden Single: r8c2=5
Hidden Single: r9c9=6
Naked Single: r9c4=4
Full House: r8c4=6
Naked Single: r9c8=5
Full House: r7c8=4
Full House: r7c7=2
Full House: r3c7=4
Naked Single: r8c5=2
Full House: r2c5=6
Full House: r8c1=4
Naked Single: r7c3=6
Naked Single: r3c2=2
Full House: r3c9=5
Naked Single: r9c6=3
Full House: r7c6=5
Full House: r7c1=3
Full House: r9c1=2
Full House: r1c1=6
Naked Single: r6c3=4
Full House: r2c3=5
Full House: r1c2=4
Full House: r6c2=6
Naked Single: r2c9=2
Full House: r1c9=1
Full House: r1c6=2
Full House: r2c6=4
|
sudoku_normal_extremely_hard_22
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..3.5..7..1.8..3..9....7.6...2..6..4....4....1..2..5...9.1....8..7..8.3..8..9.7..
|
643952871715864392928317465532786914879541623164239587396175248457628139281493756
|
. . 3 . 5 . . 7 .
. 1 . 8 . . 3 . .
9 . . . . 7 . 6 .
. . 2 . . 6 . . 4
. . . . 4 . . . .
1 . . 2 . . 5 . .
. 9 . 1 . . . . 8
. . 7 . . 8 . 3 .
. 8 . . 9 . 7 . .
|
6 4 3 9 5 2 8 7 1
7 1 5 8 6 4 3 9 2
9 2 8 3 1 7 4 6 5
5 3 2 7 8 6 9 1 4
8 7 9 5 4 1 6 2 3
1 6 4 2 3 9 5 8 7
3 9 6 1 7 5 2 4 8
4 5 7 6 2 8 1 3 9
2 8 1 4 9 3 7 5 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2208h1
|
643952871715864392928317465532786914879541623164239587396175248457628139281493756 #1 Medium (504)
Hidden Single: r2c1=7
Hidden Single: r9c3=1
Hidden Single: r7c5=7
Locked Candidates Type 1 (Pointing): 8 in b3 => r45c7<>8
Locked Candidates Type 1 (Pointing): 3 in b7 => r45c1<>3
Locked Candidates Type 2 (Claiming): 1 in c8 => r45c7,r5c9<>1
Naked Single: r4c7=9
Naked Single: r6c8=8
Naked Single: r4c8=1
Naked Single: r6c5=3
Naked Single: r5c8=2
Naked Single: r4c5=8
Naked Single: r6c6=9
Naked Single: r5c7=6
Naked Single: r4c1=5
Naked Single: r6c9=7
Full House: r5c9=3
Naked Single: r4c4=7
Full House: r4c2=3
Naked Single: r5c1=8
Naked Single: r5c2=7
Naked Single: r5c4=5
Full House: r5c6=1
Full House: r5c3=9
Hidden Single: r2c8=9
Hidden Single: r8c9=9
Hidden Single: r3c5=1
Hidden Single: r3c4=3
Hidden Single: r1c4=9
Hidden Single: r1c7=8
Hidden Single: r3c3=8
Hidden Single: r8c7=1
Hidden Single: r8c2=5
Hidden Single: r9c9=6
Naked Single: r9c4=4
Full House: r8c4=6
Naked Single: r9c8=5
Full House: r7c8=4
Full House: r7c7=2
Full House: r3c7=4
Naked Single: r8c5=2
Full House: r2c5=6
Full House: r8c1=4
Naked Single: r7c3=6
Naked Single: r3c2=2
Full House: r3c9=5
Naked Single: r9c6=3
Full House: r7c6=5
Full House: r7c1=3
Full House: r9c1=2
Full House: r1c1=6
Naked Single: r6c3=4
Full House: r2c3=5
Full House: r1c2=4
Full House: r6c2=6
Naked Single: r2c9=2
Full House: r1c9=1
Full House: r1c6=2
Full House: r2c6=4
|
sudoku_normal_hard_23
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.5.496.31.635.7...4..8...6..3.1..25.6...5..78..2..4.1.386975142...6..38.1...4..9.
|
257496831863517429419832567738169254641253978592784613386975142974621385125348796
|
. 5 . 4 9 6 . 3 1
. 6 3 5 . 7 . . .
4 . . 8 . . . 6 .
. 3 . 1 . . 2 5 .
6 . . . 5 . . 7 8
. . 2 . . 4 . 1 .
3 8 6 9 7 5 1 4 2
. . . 6 . . 3 8 .
1 . . . 4 . . 9 .
|
2 5 7 4 9 6 8 3 1
8 6 3 5 1 7 4 2 9
4 1 9 8 3 2 5 6 7
7 3 8 1 6 9 2 5 4
6 4 1 2 5 3 9 7 8
5 9 2 7 8 4 6 1 3
3 8 6 9 7 5 1 4 2
9 7 4 6 2 1 3 8 5
1 2 5 3 4 8 7 9 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2301m
|
257496831863517429419832567738169254641253978592784613386975142974621385125348796 #1 Easy (294)
Hidden Single: r2c4=5
Hidden Single: r7c7=1
Hidden Single: r7c1=3
Naked Single: r7c5=7
Naked Single: r7c4=9
Naked Single: r7c8=4
Full House: r7c3=6
Hidden Single: r1c4=4
Hidden Single: r1c6=6
Hidden Single: r2c2=6
Hidden Single: r1c8=3
Naked Single: r5c8=7
Naked Single: r4c8=5
Naked Single: r8c8=8
Full House: r2c8=2
Naked Single: r2c5=1
Naked Single: r8c5=2
Naked Single: r3c5=3
Full House: r3c6=2
Naked Single: r8c6=1
Naked Single: r9c4=3
Full House: r9c6=8
Naked Single: r5c4=2
Full House: r6c4=7
Naked Single: r4c6=9
Full House: r5c6=3
Naked Single: r6c2=9
Naked Single: r6c7=6
Naked Single: r4c9=4
Naked Single: r6c5=8
Full House: r4c5=6
Naked Single: r6c9=3
Full House: r5c7=9
Full House: r6c1=5
Naked Single: r2c9=9
Naked Single: r2c1=8
Full House: r2c7=4
Naked Single: r1c3=7
Naked Single: r4c1=7
Full House: r4c3=8
Naked Single: r1c1=2
Full House: r1c7=8
Full House: r8c1=9
Naked Single: r3c2=1
Full House: r3c3=9
Naked Single: r9c3=5
Naked Single: r5c2=4
Full House: r5c3=1
Full House: r8c3=4
Naked Single: r9c7=7
Full House: r3c7=5
Full House: r3c9=7
Naked Single: r8c2=7
Full House: r8c9=5
Full House: r9c2=2
Full House: r9c9=6
|
sudoku_normal_extremely_hard_23
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.5..9...1..3..7...4..8...6..3.1..2..6...5...8..2..4.1..8...5..2...6..3..1...4..9.
|
257496831863517429419832567738169254641253978592784613386975142974621385125348796
|
. 5 . . 9 . . . 1
. . 3 . . 7 . . .
4 . . 8 . . . 6 .
. 3 . 1 . . 2 . .
6 . . . 5 . . . 8
. . 2 . . 4 . 1 .
. 8 . . . 5 . . 2
. . . 6 . . 3 . .
1 . . . 4 . . 9 .
|
2 5 7 4 9 6 8 3 1
8 6 3 5 1 7 4 2 9
4 1 9 8 3 2 5 6 7
7 3 8 1 6 9 2 5 4
6 4 1 2 5 3 9 7 8
5 9 2 7 8 4 6 1 3
3 8 6 9 7 5 1 4 2
9 7 4 6 2 1 3 8 5
1 2 5 3 4 8 7 9 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2301m
|
257496831863517429419832567738169254641253978592784613386975142974621385125348796 #1 Easy (294)
Hidden Single: r2c4=5
Hidden Single: r7c7=1
Hidden Single: r7c1=3
Naked Single: r7c5=7
Naked Single: r7c4=9
Naked Single: r7c8=4
Full House: r7c3=6
Hidden Single: r1c4=4
Hidden Single: r1c6=6
Hidden Single: r2c2=6
Hidden Single: r1c8=3
Naked Single: r5c8=7
Naked Single: r4c8=5
Naked Single: r8c8=8
Full House: r2c8=2
Naked Single: r2c5=1
Naked Single: r8c5=2
Naked Single: r3c5=3
Full House: r3c6=2
Naked Single: r8c6=1
Naked Single: r9c4=3
Full House: r9c6=8
Naked Single: r5c4=2
Full House: r6c4=7
Naked Single: r4c6=9
Full House: r5c6=3
Naked Single: r6c2=9
Naked Single: r6c7=6
Naked Single: r4c9=4
Naked Single: r6c5=8
Full House: r4c5=6
Naked Single: r6c9=3
Full House: r5c7=9
Full House: r6c1=5
Naked Single: r2c9=9
Naked Single: r2c1=8
Full House: r2c7=4
Naked Single: r1c3=7
Naked Single: r4c1=7
Full House: r4c3=8
Naked Single: r1c1=2
Full House: r1c7=8
Full House: r8c1=9
Naked Single: r3c2=1
Full House: r3c3=9
Naked Single: r9c3=5
Naked Single: r5c2=4
Full House: r5c3=1
Full House: r8c3=4
Naked Single: r9c7=7
Full House: r3c7=5
Full House: r3c9=7
Naked Single: r8c2=7
Full House: r8c9=5
Full House: r9c2=2
Full House: r9c9=6
|
sudoku_normal_hard_24
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..8.4..7.6..9.72.879...2...9..7..8...1.....5...7..9..6...1..6374.5396182.3.278594
|
328641975654937218791582463963725841812463759547819326289154637475396182136278594
|
. . 8 . 4 . . 7 .
6 . . 9 . 7 2 . 8
7 9 . . . 2 . . .
9 . . 7 . . 8 . .
. 1 . . . . . 5 .
. . 7 . . 9 . . 6
. . . 1 . . 6 3 7
4 . 5 3 9 6 1 8 2
. 3 . 2 7 8 5 9 4
|
3 2 8 6 4 1 9 7 5
6 5 4 9 3 7 2 1 8
7 9 1 5 8 2 4 6 3
9 6 3 7 2 5 8 4 1
8 1 2 4 6 3 7 5 9
5 4 7 8 1 9 3 2 6
2 8 9 1 5 4 6 3 7
4 7 5 3 9 6 1 8 2
1 3 6 2 7 8 5 9 4
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2309h2
|
328641975654937218791582463963725841812463759547819326289154637475396182136278594 #1 Medium (400)
Hidden Single: r3c1=7
Hidden Single: r2c6=7
Locked Candidates Type 1 (Pointing): 1 in b7 => r9c89<>1
Locked Candidates Type 2 (Claiming): 9 in c8 => r7c79,r8c7,r9c9<>9
Naked Single: r9c9=4
Naked Single: r7c9=7
Naked Single: r9c6=8
Naked Single: r7c7=6
Naked Single: r8c7=1
Naked Single: r8c4=3
Naked Single: r9c4=2
Naked Single: r9c8=9
Full House: r8c8=8
Naked Single: r8c5=9
Full House: r8c2=7
Naked Single: r9c1=1
Full House: r9c3=6
Naked Single: r7c5=5
Full House: r7c6=4
Naked Single: r5c6=3
Naked Single: r5c9=9
Hidden Single: r5c7=7
Hidden Single: r1c4=6
Hidden Single: r3c8=6
Hidden Single: r4c2=6
Hidden Single: r7c3=9
Hidden Single: r2c2=5
Naked Single: r1c2=2
Naked Single: r1c1=3
Naked Single: r7c2=8
Full House: r6c2=4
Full House: r7c1=2
Naked Single: r1c7=9
Naked Single: r5c3=2
Naked Single: r6c7=3
Full House: r3c7=4
Naked Single: r5c1=8
Full House: r6c1=5
Full House: r4c3=3
Naked Single: r4c9=1
Naked Single: r2c8=1
Naked Single: r3c3=1
Full House: r2c3=4
Full House: r2c5=3
Naked Single: r5c4=4
Full House: r5c5=6
Naked Single: r6c4=8
Full House: r3c4=5
Naked Single: r1c9=5
Full House: r1c6=1
Full House: r4c6=5
Full House: r3c5=8
Full House: r3c9=3
Naked Single: r4c5=2
Full House: r4c8=4
Full House: r6c8=2
Full House: r6c5=1
|
sudoku_normal_extremely_hard_24
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..8.4..7.6..9..2.8.9...2...9..7..8...1.....5...7..9..6...1...3.4.5..6..2.3..7.5..
|
328641975654937218791582463963725841812463759547819326289154637475396182136278594
|
. . 8 . 4 . . 7 .
6 . . 9 . . 2 . 8
. 9 . . . 2 . . .
9 . . 7 . . 8 . .
. 1 . . . . . 5 .
. . 7 . . 9 . . 6
. . . 1 . . . 3 .
4 . 5 . . 6 . . 2
. 3 . . 7 . 5 . .
|
3 2 8 6 4 1 9 7 5
6 5 4 9 3 7 2 1 8
7 9 1 5 8 2 4 6 3
9 6 3 7 2 5 8 4 1
8 1 2 4 6 3 7 5 9
5 4 7 8 1 9 3 2 6
2 8 9 1 5 4 6 3 7
4 7 5 3 9 6 1 8 2
1 3 6 2 7 8 5 9 4
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2309h2
|
328641975654937218791582463963725841812463759547819326289154637475396182136278594 #1 Medium (400)
Hidden Single: r3c1=7
Hidden Single: r2c6=7
Locked Candidates Type 1 (Pointing): 1 in b7 => r9c89<>1
Locked Candidates Type 2 (Claiming): 9 in c8 => r7c79,r8c7,r9c9<>9
Naked Single: r9c9=4
Naked Single: r7c9=7
Naked Single: r9c6=8
Naked Single: r7c7=6
Naked Single: r8c7=1
Naked Single: r8c4=3
Naked Single: r9c4=2
Naked Single: r9c8=9
Full House: r8c8=8
Naked Single: r8c5=9
Full House: r8c2=7
Naked Single: r9c1=1
Full House: r9c3=6
Naked Single: r7c5=5
Full House: r7c6=4
Naked Single: r5c6=3
Naked Single: r5c9=9
Hidden Single: r5c7=7
Hidden Single: r1c4=6
Hidden Single: r3c8=6
Hidden Single: r4c2=6
Hidden Single: r7c3=9
Hidden Single: r2c2=5
Naked Single: r1c2=2
Naked Single: r1c1=3
Naked Single: r7c2=8
Full House: r6c2=4
Full House: r7c1=2
Naked Single: r1c7=9
Naked Single: r5c3=2
Naked Single: r6c7=3
Full House: r3c7=4
Naked Single: r5c1=8
Full House: r6c1=5
Full House: r4c3=3
Naked Single: r4c9=1
Naked Single: r2c8=1
Naked Single: r3c3=1
Full House: r2c3=4
Full House: r2c5=3
Naked Single: r5c4=4
Full House: r5c5=6
Naked Single: r6c4=8
Full House: r3c4=5
Naked Single: r1c9=5
Full House: r1c6=1
Full House: r4c6=5
Full House: r3c5=8
Full House: r3c9=3
Naked Single: r4c5=2
Full House: r4c8=4
Full House: r6c8=2
Full House: r6c5=1
|
sudoku_normal_hard_25
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..8.3..6..1...93.763.7......83..41..5..1.3..6.962.7.3.....21..93..9.5.2..4.876513
|
478532961215469387639718254783654192524193876196287435857321649361945728942876513
|
. . 8 . 3 . . 6 .
. 1 . . . 9 3 . 7
6 3 . 7 . . . . .
. 8 3 . . 4 1 . .
5 . . 1 . 3 . . 6
. 9 6 2 . 7 . 3 .
. . . . 2 1 . . 9
3 . . 9 . 5 . 2 .
. 4 . 8 7 6 5 1 3
|
4 7 8 5 3 2 9 6 1
2 1 5 4 6 9 3 8 7
6 3 9 7 1 8 2 5 4
7 8 3 6 5 4 1 9 2
5 2 4 1 9 3 8 7 6
1 9 6 2 8 7 4 3 5
8 5 7 3 2 1 6 4 9
3 6 1 9 4 5 7 2 8
9 4 2 8 7 6 5 1 3
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2402h1
|
478532961215469387639718254783654192524193876196287435857321649361945728942876513 #1 Medium (468)
Locked Candidates Type 2 (Claiming): 6 in r9 => r7c45,r8c56<>6
Hidden Single: r9c6=6
Hidden Single: r7c5=2
Hidden Single: r5c6=3
Hidden Single: r4c3=3
Hidden Single: r3c2=3
Hidden Single: r6c6=7
Naked Single: r6c2=9
Hidden Single: r2c7=3
Hidden Single: r9c9=3
Naked Single: r9c4=8
Naked Single: r5c4=1
Naked Single: r8c6=5
Naked Single: r9c8=1
Naked Single: r1c6=2
Full House: r3c6=8
Naked Single: r8c5=4
Full House: r7c4=3
Naked Single: r8c9=8
Hidden Single: r7c1=8
Hidden Single: r1c9=1
Hidden Single: r3c5=1
Hidden Single: r6c1=1
Hidden Single: r8c3=1
Hidden Single: r5c2=2
Naked Single: r4c1=7
Full House: r5c3=4
Hidden Single: r2c8=8
Hidden Single: r4c9=2
Hidden Single: r3c7=2
Hidden Single: r1c2=7
Naked Single: r8c2=6
Full House: r7c2=5
Full House: r8c7=7
Naked Single: r7c3=7
Naked Single: r7c8=4
Full House: r7c7=6
Hidden Single: r1c4=5
Naked Single: r2c5=6
Full House: r2c4=4
Full House: r4c4=6
Naked Single: r2c1=2
Full House: r2c3=5
Naked Single: r9c1=9
Full House: r1c1=4
Full House: r3c3=9
Full House: r9c3=2
Full House: r1c7=9
Naked Single: r3c8=5
Full House: r3c9=4
Full House: r6c9=5
Naked Single: r5c7=8
Full House: r6c7=4
Full House: r6c5=8
Naked Single: r4c8=9
Full House: r4c5=5
Full House: r5c5=9
Full House: r5c8=7
|
sudoku_normal_extremely_hard_25
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..8.3..6..1...9..76..7......8...41..5.......6..62...3......1..93..9...2..4..7.5..
|
478532961215469387639718254783654192524193876196287435857321649361945728942876513
|
. . 8 . 3 . . 6 .
. 1 . . . 9 . . 7
6 . . 7 . . . . .
. 8 . . . 4 1 . .
5 . . . . . . . 6
. . 6 2 . . . 3 .
. . . . . 1 . . 9
3 . . 9 . . . 2 .
. 4 . . 7 . 5 . .
|
4 7 8 5 3 2 9 6 1
2 1 5 4 6 9 3 8 7
6 3 9 7 1 8 2 5 4
7 8 3 6 5 4 1 9 2
5 2 4 1 9 3 8 7 6
1 9 6 2 8 7 4 3 5
8 5 7 3 2 1 6 4 9
3 6 1 9 4 5 7 2 8
9 4 2 8 7 6 5 1 3
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2402h1
|
478532961215469387639718254783654192524193876196287435857321649361945728942876513 #1 Medium (468)
Locked Candidates Type 2 (Claiming): 6 in r9 => r7c45,r8c56<>6
Hidden Single: r9c6=6
Hidden Single: r7c5=2
Hidden Single: r5c6=3
Hidden Single: r4c3=3
Hidden Single: r3c2=3
Hidden Single: r6c6=7
Naked Single: r6c2=9
Hidden Single: r2c7=3
Hidden Single: r9c9=3
Naked Single: r9c4=8
Naked Single: r5c4=1
Naked Single: r8c6=5
Naked Single: r9c8=1
Naked Single: r1c6=2
Full House: r3c6=8
Naked Single: r8c5=4
Full House: r7c4=3
Naked Single: r8c9=8
Hidden Single: r7c1=8
Hidden Single: r1c9=1
Hidden Single: r3c5=1
Hidden Single: r6c1=1
Hidden Single: r8c3=1
Hidden Single: r5c2=2
Naked Single: r4c1=7
Full House: r5c3=4
Hidden Single: r2c8=8
Hidden Single: r4c9=2
Hidden Single: r3c7=2
Hidden Single: r1c2=7
Naked Single: r8c2=6
Full House: r7c2=5
Full House: r8c7=7
Naked Single: r7c3=7
Naked Single: r7c8=4
Full House: r7c7=6
Hidden Single: r1c4=5
Naked Single: r2c5=6
Full House: r2c4=4
Full House: r4c4=6
Naked Single: r2c1=2
Full House: r2c3=5
Naked Single: r9c1=9
Full House: r1c1=4
Full House: r3c3=9
Full House: r9c3=2
Full House: r1c7=9
Naked Single: r3c8=5
Full House: r3c9=4
Full House: r6c9=5
Naked Single: r5c7=8
Full House: r6c7=4
Full House: r6c5=8
Naked Single: r4c8=9
Full House: r4c5=5
Full House: r5c5=9
Full House: r5c8=7
|
sudoku_normal_hard_26
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.32.4..65.742.5...95....2...4.1..6.3.65.8.7.929..76.8..29.....6.8.7..5.2.1..2..9.
|
832947165674215938951863247748192653165384729293576481329451876486739512517628394
|
. 3 2 . 4 . . 6 5
. 7 4 2 . 5 . . .
9 5 . . . . 2 . .
. 4 . 1 . . 6 . 3
. 6 5 . 8 . 7 . 9
2 9 . . 7 6 . 8 .
. 2 9 . . . . . 6
. 8 . 7 . . 5 . 2
. 1 . . 2 . . 9 .
|
8 3 2 9 4 7 1 6 5
6 7 4 2 1 5 9 3 8
9 5 1 8 6 3 2 4 7
7 4 8 1 9 2 6 5 3
1 6 5 3 8 4 7 2 9
2 9 3 5 7 6 4 8 1
3 2 9 4 5 1 8 7 6
4 8 6 7 3 9 5 1 2
5 1 7 6 2 8 3 9 4
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk1907h1
|
832947165674215938951863247748192653165384729293576481329451876486739512517628394 #1 Medium (452)
Hidden Single: r4c7=6
Locked Pair: 7,8 in r4c13 => r4c56,r6c23<>7
Naked Single: r6c2=9
Naked Single: r5c2=6
Hidden Single: r6c5=7
Hidden Single: r5c9=9
Hidden Single: r8c9=2
Naked Single: r8c2=8
Hidden Single: r7c2=2
Naked Single: r2c2=7
Full House: r3c2=5
Hidden Single: r1c3=2
Hidden Single: r2c4=2
Hidden Single: r1c9=5
Hidden Single: r4c8=5
Naked Single: r4c5=9
Naked Single: r4c6=2
Hidden Single: r1c4=9
Hidden Single: r6c4=5
Hidden Single: r1c6=7
Hidden Single: r7c5=5
Hidden Single: r5c8=2
Hidden Single: r2c7=9
Hidden Single: r8c6=9
Hidden Single: r9c1=5
Hidden Single: r6c3=3
Naked Single: r5c1=1
Naked Single: r8c3=6
Naked Single: r1c1=8
Full House: r1c7=1
Naked Single: r9c3=7
Naked Single: r2c1=6
Full House: r3c3=1
Full House: r4c3=8
Full House: r4c1=7
Naked Single: r2c8=3
Naked Single: r2c9=8
Full House: r2c5=1
Naked Single: r6c7=4
Full House: r6c9=1
Naked Single: r9c9=4
Full House: r3c9=7
Full House: r3c8=4
Naked Single: r8c5=3
Full House: r3c5=6
Naked Single: r8c8=1
Full House: r8c1=4
Full House: r7c8=7
Full House: r7c1=3
Naked Single: r9c6=8
Naked Single: r7c7=8
Full House: r9c7=3
Full House: r9c4=6
Naked Single: r3c6=3
Full House: r3c4=8
Naked Single: r7c4=4
Full House: r5c4=3
Full House: r5c6=4
Full House: r7c6=1
|
sudoku_normal_extremely_hard_26
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.3..4..6...4..5...9.....2...4.1....3..5.8.7..2....6.8...9.....6...7..5...1..2..9.
|
832947165674215938951863247748192653165384729293576481329451876486739512517628394
|
. 3 . . 4 . . 6 .
. . 4 . . 5 . . .
9 . . . . . 2 . .
. 4 . 1 . . . . 3
. . 5 . 8 . 7 . .
2 . . . . 6 . 8 .
. . 9 . . . . . 6
. . . 7 . . 5 . .
. 1 . . 2 . . 9 .
|
8 3 2 9 4 7 1 6 5
6 7 4 2 1 5 9 3 8
9 5 1 8 6 3 2 4 7
7 4 8 1 9 2 6 5 3
1 6 5 3 8 4 7 2 9
2 9 3 5 7 6 4 8 1
3 2 9 4 5 1 8 7 6
4 8 6 7 3 9 5 1 2
5 1 7 6 2 8 3 9 4
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk1907h1
|
832947165674215938951863247748192653165384729293576481329451876486739512517628394 #1 Medium (452)
Hidden Single: r4c7=6
Locked Pair: 7,8 in r4c13 => r4c56,r6c23<>7
Naked Single: r6c2=9
Naked Single: r5c2=6
Hidden Single: r6c5=7
Hidden Single: r5c9=9
Hidden Single: r8c9=2
Naked Single: r8c2=8
Hidden Single: r7c2=2
Naked Single: r2c2=7
Full House: r3c2=5
Hidden Single: r1c3=2
Hidden Single: r2c4=2
Hidden Single: r1c9=5
Hidden Single: r4c8=5
Naked Single: r4c5=9
Naked Single: r4c6=2
Hidden Single: r1c4=9
Hidden Single: r6c4=5
Hidden Single: r1c6=7
Hidden Single: r7c5=5
Hidden Single: r5c8=2
Hidden Single: r2c7=9
Hidden Single: r8c6=9
Hidden Single: r9c1=5
Hidden Single: r6c3=3
Naked Single: r5c1=1
Naked Single: r8c3=6
Naked Single: r1c1=8
Full House: r1c7=1
Naked Single: r9c3=7
Naked Single: r2c1=6
Full House: r3c3=1
Full House: r4c3=8
Full House: r4c1=7
Naked Single: r2c8=3
Naked Single: r2c9=8
Full House: r2c5=1
Naked Single: r6c7=4
Full House: r6c9=1
Naked Single: r9c9=4
Full House: r3c9=7
Full House: r3c8=4
Naked Single: r8c5=3
Full House: r3c5=6
Naked Single: r8c8=1
Full House: r8c1=4
Full House: r7c8=7
Full House: r7c1=3
Naked Single: r9c6=8
Naked Single: r7c7=8
Full House: r9c7=3
Full House: r9c4=6
Naked Single: r3c6=3
Full House: r3c4=8
Naked Single: r7c4=4
Full House: r5c4=3
Full House: r5c6=4
Full House: r7c6=1
|
sudoku_normal_hard_27
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.2.894...39...7.8...4...19.6.23.9.4.9.3.486.245...2..9..9...5...6.4..9.7...981.26
|
125894763396517284784236195672359841913748652458162379249673518861425937537981426
|
. 2 . 8 9 4 . . .
3 9 . . . 7 . 8 .
. . 4 . . . 1 9 .
6 . 2 3 . 9 . 4 .
9 . 3 . 4 8 6 . 2
4 5 . . . 2 . . 9
. . 9 . . . 5 . .
. 6 . 4 . . 9 . 7
. . . 9 8 1 . 2 6
|
1 2 5 8 9 4 7 6 3
3 9 6 5 1 7 2 8 4
7 8 4 2 3 6 1 9 5
6 7 2 3 5 9 8 4 1
9 1 3 7 4 8 6 5 2
4 5 8 1 6 2 3 7 9
2 4 9 6 7 3 5 1 8
8 6 1 4 2 5 9 3 7
5 3 7 9 8 1 4 2 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk1902h-2
|
125894763396517284784236195672359841913748652458162379249673518861425937537981426 #1 Medium (524)
Hidden Single: r6c1=4
Hidden Single: r1c6=4
Locked Pair: 5,7 in r9c13 => r7c12,r9c24<>7, r8c13,r9c4<>5
Locked Candidates Type 1 (Pointing): 1 in b2 => r2c23<>1
Naked Single: r2c2=9
Hidden Single: r3c8=9
Hidden Single: r5c1=9
Hidden Single: r4c6=9
Hidden Single: r9c4=9
Hidden Single: r5c9=2
Hidden Single: r4c3=2
Hidden Single: r8c7=9
Hidden Single: r5c6=8
Hidden Single: r9c9=6
Hidden Single: r2c7=2
Hidden Single: r7c9=8
Hidden Single: r1c8=6
Hidden Single: r2c9=4
Hidden Single: r9c7=4
Naked Single: r9c2=3
Hidden Single: r4c9=1
Hidden Single: r7c2=4
Hidden Single: r2c3=6
Hidden Single: r5c8=5
Hidden Single: r1c7=7
Naked Single: r4c7=8
Full House: r6c7=3
Full House: r6c8=7
Naked Single: r4c2=7
Full House: r4c5=5
Naked Single: r3c2=8
Full House: r5c2=1
Full House: r5c4=7
Full House: r6c3=8
Naked Single: r2c5=1
Full House: r2c4=5
Naked Single: r8c3=1
Naked Single: r6c5=6
Full House: r6c4=1
Naked Single: r1c3=5
Full House: r9c3=7
Full House: r9c1=5
Naked Single: r7c1=2
Full House: r8c1=8
Naked Single: r8c8=3
Full House: r7c8=1
Naked Single: r1c1=1
Full House: r1c9=3
Full House: r3c1=7
Full House: r3c9=5
Naked Single: r7c4=6
Full House: r3c4=2
Naked Single: r8c5=2
Full House: r8c6=5
Naked Single: r7c6=3
Full House: r3c6=6
Full House: r3c5=3
Full House: r7c5=7
|
sudoku_normal_extremely_hard_27
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.2.89....3....7.8...4...1..6..3...4...3.4.6...5...2..9..9...5...6.4....7....81.2.
|
125894763396517284784236195672359841913748652458162379249673518861425937537981426
|
. 2 . 8 9 . . . .
3 . . . . 7 . 8 .
. . 4 . . . 1 . .
6 . . 3 . . . 4 .
. . 3 . 4 . 6 . .
. 5 . . . 2 . . 9
. . 9 . . . 5 . .
. 6 . 4 . . . . 7
. . . . 8 1 . 2 .
|
1 2 5 8 9 4 7 6 3
3 9 6 5 1 7 2 8 4
7 8 4 2 3 6 1 9 5
6 7 2 3 5 9 8 4 1
9 1 3 7 4 8 6 5 2
4 5 8 1 6 2 3 7 9
2 4 9 6 7 3 5 1 8
8 6 1 4 2 5 9 3 7
5 3 7 9 8 1 4 2 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk1902h-2
|
125894763396517284784236195672359841913748652458162379249673518861425937537981426 #1 Medium (524)
Hidden Single: r6c1=4
Hidden Single: r1c6=4
Locked Pair: 5,7 in r9c13 => r7c12,r9c24<>7, r8c13,r9c4<>5
Locked Candidates Type 1 (Pointing): 1 in b2 => r2c23<>1
Naked Single: r2c2=9
Hidden Single: r3c8=9
Hidden Single: r5c1=9
Hidden Single: r4c6=9
Hidden Single: r9c4=9
Hidden Single: r5c9=2
Hidden Single: r4c3=2
Hidden Single: r8c7=9
Hidden Single: r5c6=8
Hidden Single: r9c9=6
Hidden Single: r2c7=2
Hidden Single: r7c9=8
Hidden Single: r1c8=6
Hidden Single: r2c9=4
Hidden Single: r9c7=4
Naked Single: r9c2=3
Hidden Single: r4c9=1
Hidden Single: r7c2=4
Hidden Single: r2c3=6
Hidden Single: r5c8=5
Hidden Single: r1c7=7
Naked Single: r4c7=8
Full House: r6c7=3
Full House: r6c8=7
Naked Single: r4c2=7
Full House: r4c5=5
Naked Single: r3c2=8
Full House: r5c2=1
Full House: r5c4=7
Full House: r6c3=8
Naked Single: r2c5=1
Full House: r2c4=5
Naked Single: r8c3=1
Naked Single: r6c5=6
Full House: r6c4=1
Naked Single: r1c3=5
Full House: r9c3=7
Full House: r9c1=5
Naked Single: r7c1=2
Full House: r8c1=8
Naked Single: r8c8=3
Full House: r7c8=1
Naked Single: r1c1=1
Full House: r1c9=3
Full House: r3c1=7
Full House: r3c9=5
Naked Single: r7c4=6
Full House: r3c4=2
Naked Single: r8c5=2
Full House: r8c6=5
Naked Single: r7c6=3
Full House: r3c6=6
Full House: r3c5=3
Full House: r7c5=7
|
sudoku_normal_hard_28
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
67...9..5.514.......357.8.1.4.765.18.16.2495.5....146...865.1..1....86..2.791.584
|
674189325851432796923576841349765218716824953582391467498657132135248679267913584
|
6 7 . . . 9 . . 5
. 5 1 4 . . . . .
. . 3 5 7 . 8 . 1
. 4 . 7 6 5 . 1 8
. 1 6 . 2 4 9 5 .
5 . . . . 1 4 6 .
. . 8 6 5 . 1 . .
1 . . . . 8 6 . .
2 . 7 9 1 . 5 8 4
|
6 7 4 1 8 9 3 2 5
8 5 1 4 3 2 7 9 6
9 2 3 5 7 6 8 4 1
3 4 9 7 6 5 2 1 8
7 1 6 8 2 4 9 5 3
5 8 2 3 9 1 4 6 7
4 9 8 6 5 7 1 3 2
1 3 5 2 4 8 6 7 9
2 6 7 9 1 3 5 8 4
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2304e
|
674189325851432796923576841349765218716824953582391467498657132135248679267913584 #1 Easy (368)
Hidden Single: r4c6=5
Hidden Single: r3c4=5
Hidden Single: r4c8=1
Hidden Single: r3c9=1
Hidden Single: r9c7=5
Naked Single: r9c3=7
Hidden Single: r8c1=1
Hidden Single: r9c5=1
Hidden Single: r5c6=4
Hidden Single: r6c7=4
Hidden Single: r2c2=5
Hidden Single: r4c5=6
Hidden Single: r7c4=6
Naked Single: r9c6=3
Full House: r9c2=6
Naked Single: r8c4=2
Naked Single: r8c5=4
Full House: r7c6=7
Hidden Single: r3c6=6
Full House: r2c6=2
Hidden Single: r2c9=6
Hidden Single: r8c3=5
Hidden Single: r5c1=7
Naked Single: r5c9=3
Full House: r5c4=8
Naked Single: r4c7=2
Full House: r6c9=7
Naked Single: r6c4=3
Full House: r1c4=1
Full House: r6c5=9
Naked Single: r1c7=3
Full House: r2c7=7
Naked Single: r4c3=9
Full House: r4c1=3
Naked Single: r8c9=9
Full House: r7c9=2
Naked Single: r6c3=2
Full House: r1c3=4
Full House: r6c2=8
Naked Single: r1c5=8
Full House: r1c8=2
Full House: r2c5=3
Naked Single: r2c8=9
Full House: r2c1=8
Full House: r3c8=4
Naked Single: r8c2=3
Full House: r8c8=7
Full House: r7c8=3
Naked Single: r3c1=9
Full House: r3c2=2
Full House: r7c2=9
Full House: r7c1=4
|
sudoku_normal_extremely_hard_28
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
67...9..5..14.......3.7.8...4.7....8.16.2.95.5....1.6...8.5.1.......86..2..9...84
|
674189325851432796923576841349765218716824953582391467498657132135248679267913584
|
6 7 . . . 9 . . 5
. . 1 4 . . . . .
. . 3 . 7 . 8 . .
. 4 . 7 . . . . 8
. 1 6 . 2 . 9 5 .
5 . . . . 1 . 6 .
. . 8 . 5 . 1 . .
. . . . . 8 6 . .
2 . . 9 . . . 8 4
|
6 7 4 1 8 9 3 2 5
8 5 1 4 3 2 7 9 6
9 2 3 5 7 6 8 4 1
3 4 9 7 6 5 2 1 8
7 1 6 8 2 4 9 5 3
5 8 2 3 9 1 4 6 7
4 9 8 6 5 7 1 3 2
1 3 5 2 4 8 6 7 9
2 6 7 9 1 3 5 8 4
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2304e
|
674189325851432796923576841349765218716824953582391467498657132135248679267913584 #1 Easy (368)
Hidden Single: r4c6=5
Hidden Single: r3c4=5
Hidden Single: r4c8=1
Hidden Single: r3c9=1
Hidden Single: r9c7=5
Naked Single: r9c3=7
Hidden Single: r8c1=1
Hidden Single: r9c5=1
Hidden Single: r5c6=4
Hidden Single: r6c7=4
Hidden Single: r2c2=5
Hidden Single: r4c5=6
Hidden Single: r7c4=6
Naked Single: r9c6=3
Full House: r9c2=6
Naked Single: r8c4=2
Naked Single: r8c5=4
Full House: r7c6=7
Hidden Single: r3c6=6
Full House: r2c6=2
Hidden Single: r2c9=6
Hidden Single: r8c3=5
Hidden Single: r5c1=7
Naked Single: r5c9=3
Full House: r5c4=8
Naked Single: r4c7=2
Full House: r6c9=7
Naked Single: r6c4=3
Full House: r1c4=1
Full House: r6c5=9
Naked Single: r1c7=3
Full House: r2c7=7
Naked Single: r4c3=9
Full House: r4c1=3
Naked Single: r8c9=9
Full House: r7c9=2
Naked Single: r6c3=2
Full House: r1c3=4
Full House: r6c2=8
Naked Single: r1c5=8
Full House: r1c8=2
Full House: r2c5=3
Naked Single: r2c8=9
Full House: r2c1=8
Full House: r3c8=4
Naked Single: r8c2=3
Full House: r8c8=7
Full House: r7c8=3
Naked Single: r3c1=9
Full House: r3c2=2
Full House: r7c2=9
Full House: r7c1=4
|
sudoku_normal_hard_29
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.1.796.3.3..54291...5381.2..6.9....3..782.16.4..6.7.8..23.7.69...92.3..1...4...5.
|
214796538386542917795381426862915743937824165451637289523178694649253871178469352
|
. 1 . 7 9 6 . 3 .
3 . . 5 4 2 9 1 .
. . 5 3 8 1 . 2 .
. 6 . 9 . . . . 3
. . 7 8 2 . 1 6 .
4 . . 6 . 7 . 8 .
. 2 3 . 7 . 6 9 .
. . 9 2 . 3 . . 1
. . . 4 . . . 5 .
|
2 1 4 7 9 6 5 3 8
3 8 6 5 4 2 9 1 7
7 9 5 3 8 1 4 2 6
8 6 2 9 1 5 7 4 3
9 3 7 8 2 4 1 6 5
4 5 1 6 3 7 2 8 9
5 2 3 1 7 8 6 9 4
6 4 9 2 5 3 8 7 1
1 7 8 4 6 9 3 5 2
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2306m
|
214796538386542917795381426862915743937824165451637289523178694649253871178469352 #1 Easy (294)
Hidden Single: r2c8=1
Naked Single: r2c5=4
Naked Single: r2c6=2
Hidden Single: r5c8=6
Hidden Single: r8c4=2
Hidden Single: r7c8=9
Hidden Single: r6c4=6
Hidden Single: r7c3=3
Hidden Single: r1c8=3
Naked Single: r1c4=7
Naked Single: r1c5=9
Naked Single: r3c6=1
Full House: r3c4=3
Naked Single: r5c4=8
Full House: r7c4=1
Naked Single: r9c5=6
Naked Single: r8c5=5
Naked Single: r4c5=1
Full House: r6c5=3
Naked Single: r7c6=8
Full House: r9c6=9
Naked Single: r7c1=5
Full House: r7c9=4
Naked Single: r5c1=9
Naked Single: r8c8=7
Full House: r4c8=4
Naked Single: r5c9=5
Naked Single: r6c2=5
Naked Single: r8c7=8
Naked Single: r4c6=5
Full House: r5c6=4
Full House: r5c2=3
Naked Single: r1c9=8
Naked Single: r6c7=2
Naked Single: r8c1=6
Full House: r8c2=4
Naked Single: r9c9=2
Full House: r9c7=3
Naked Single: r1c1=2
Naked Single: r4c7=7
Full House: r6c9=9
Full House: r6c3=1
Naked Single: r3c1=7
Naked Single: r1c3=4
Full House: r1c7=5
Full House: r3c7=4
Naked Single: r4c1=8
Full House: r4c3=2
Full House: r9c1=1
Naked Single: r9c3=8
Full House: r2c3=6
Full House: r9c2=7
Naked Single: r2c2=8
Full House: r3c2=9
Full House: r3c9=6
Full House: r2c9=7
|
sudoku_normal_extremely_hard_29
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
.1...6...3..5..9....5.8..2..6.9....3..7.2.1..4....7.8..2..7.6....9..3..1...4...5.
|
214796538386542917795381426862915743937824165451637289523178694649253871178469352
|
. 1 . . . 6 . . .
3 . . 5 . . 9 . .
. . 5 . 8 . . 2 .
. 6 . 9 . . . . 3
. . 7 . 2 . 1 . .
4 . . . . 7 . 8 .
. 2 . . 7 . 6 . .
. . 9 . . 3 . . 1
. . . 4 . . . 5 .
|
2 1 4 7 9 6 5 3 8
3 8 6 5 4 2 9 1 7
7 9 5 3 8 1 4 2 6
8 6 2 9 1 5 7 4 3
9 3 7 8 2 4 1 6 5
4 5 1 6 3 7 2 8 9
5 2 3 1 7 8 6 9 4
6 4 9 2 5 3 8 7 1
1 7 8 4 6 9 3 5 2
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2306m
|
214796538386542917795381426862915743937824165451637289523178694649253871178469352 #1 Easy (294)
Hidden Single: r2c8=1
Naked Single: r2c5=4
Naked Single: r2c6=2
Hidden Single: r5c8=6
Hidden Single: r8c4=2
Hidden Single: r7c8=9
Hidden Single: r6c4=6
Hidden Single: r7c3=3
Hidden Single: r1c8=3
Naked Single: r1c4=7
Naked Single: r1c5=9
Naked Single: r3c6=1
Full House: r3c4=3
Naked Single: r5c4=8
Full House: r7c4=1
Naked Single: r9c5=6
Naked Single: r8c5=5
Naked Single: r4c5=1
Full House: r6c5=3
Naked Single: r7c6=8
Full House: r9c6=9
Naked Single: r7c1=5
Full House: r7c9=4
Naked Single: r5c1=9
Naked Single: r8c8=7
Full House: r4c8=4
Naked Single: r5c9=5
Naked Single: r6c2=5
Naked Single: r8c7=8
Naked Single: r4c6=5
Full House: r5c6=4
Full House: r5c2=3
Naked Single: r1c9=8
Naked Single: r6c7=2
Naked Single: r8c1=6
Full House: r8c2=4
Naked Single: r9c9=2
Full House: r9c7=3
Naked Single: r1c1=2
Naked Single: r4c7=7
Full House: r6c9=9
Full House: r6c3=1
Naked Single: r3c1=7
Naked Single: r1c3=4
Full House: r1c7=5
Full House: r3c7=4
Naked Single: r4c1=8
Full House: r4c3=2
Full House: r9c1=1
Naked Single: r9c3=8
Full House: r2c3=6
Full House: r9c2=7
Naked Single: r2c2=8
Full House: r3c2=9
Full House: r3c9=6
Full House: r2c9=7
|
sudoku_normal_hard_30
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
4.7.8.123.2...1.94...42.5.78...14.6...9...24..4..5...8..6.42.5.21479..365...6.4..
|
457689123328571694961423587835214769179836245642957318786342951214795836593168472
|
4 . 7 . 8 . 1 2 3
. 2 . . . 1 . 9 4
. . . 4 2 . 5 . 7
8 . . . 1 4 . 6 .
. . 9 . . . 2 4 .
. 4 . . 5 . . . 8
. . 6 . 4 2 . 5 .
2 1 4 7 9 . . 3 6
5 . . . 6 . 4 . .
|
4 5 7 6 8 9 1 2 3
3 2 8 5 7 1 6 9 4
9 6 1 4 2 3 5 8 7
8 3 5 2 1 4 7 6 9
1 7 9 8 3 6 2 4 5
6 4 2 9 5 7 3 1 8
7 8 6 3 4 2 9 5 1
2 1 4 7 9 5 8 3 6
5 9 3 1 6 8 4 7 2
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2310m
|
457689123328571694961423587835214769179836245642957318786342951214795836593168472 #1 Easy (328)
Hidden Single: r3c5=2
Hidden Single: r1c8=2
Hidden Single: r1c1=4
Hidden Single: r5c8=4
Hidden Single: r2c9=4
Hidden Single: r8c3=4
Naked Single: r8c5=9
Naked Single: r8c1=2
Hidden Single: r7c5=4
Hidden Single: r1c7=1
Hidden Single: r4c6=4
Hidden Single: r7c8=5
Naked Single: r8c9=6
Naked Single: r3c9=7
Naked Single: r8c7=8
Full House: r8c6=5
Naked Single: r3c8=8
Full House: r2c7=6
Naked Single: r2c1=3
Naked Single: r2c4=5
Naked Single: r2c5=7
Full House: r2c3=8
Full House: r5c5=3
Naked Single: r3c3=1
Naked Single: r9c3=3
Naked Single: r6c3=2
Full House: r4c3=5
Naked Single: r9c6=8
Naked Single: r4c9=9
Naked Single: r9c4=1
Full House: r7c4=3
Naked Single: r4c4=2
Naked Single: r7c9=1
Naked Single: r9c8=7
Full House: r6c8=1
Naked Single: r9c9=2
Full House: r5c9=5
Full House: r7c7=9
Full House: r9c2=9
Naked Single: r7c1=7
Full House: r7c2=8
Naked Single: r3c2=6
Naked Single: r6c1=6
Naked Single: r1c2=5
Full House: r3c1=9
Full House: r5c1=1
Full House: r3c6=3
Naked Single: r5c2=7
Full House: r4c2=3
Full House: r4c7=7
Full House: r6c7=3
Naked Single: r6c4=9
Full House: r6c6=7
Naked Single: r5c6=6
Full House: r1c6=9
Full House: r1c4=6
Full House: r5c4=8
|
sudoku_normal_extremely_hard_30
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..7.8...3.2...1.9....4..5..8...1..6...9...2...4..5...8..6..2....1.7...3.5...6.4..
|
457689123328571694961423587835214769179836245642957318786342951214795836593168472
|
. . 7 . 8 . . . 3
. 2 . . . 1 . 9 .
. . . 4 . . 5 . .
8 . . . 1 . . 6 .
. . 9 . . . 2 . .
. 4 . . 5 . . . 8
. . 6 . . 2 . . .
. 1 . 7 . . . 3 .
5 . . . 6 . 4 . .
|
4 5 7 6 8 9 1 2 3
3 2 8 5 7 1 6 9 4
9 6 1 4 2 3 5 8 7
8 3 5 2 1 4 7 6 9
1 7 9 8 3 6 2 4 5
6 4 2 9 5 7 3 1 8
7 8 6 3 4 2 9 5 1
2 1 4 7 9 5 8 3 6
5 9 3 1 6 8 4 7 2
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2310m
|
457689123328571694961423587835214769179836245642957318786342951214795836593168472 #1 Easy (328)
Hidden Single: r3c5=2
Hidden Single: r1c8=2
Hidden Single: r1c1=4
Hidden Single: r5c8=4
Hidden Single: r2c9=4
Hidden Single: r8c3=4
Naked Single: r8c5=9
Naked Single: r8c1=2
Hidden Single: r7c5=4
Hidden Single: r1c7=1
Hidden Single: r4c6=4
Hidden Single: r7c8=5
Naked Single: r8c9=6
Naked Single: r3c9=7
Naked Single: r8c7=8
Full House: r8c6=5
Naked Single: r3c8=8
Full House: r2c7=6
Naked Single: r2c1=3
Naked Single: r2c4=5
Naked Single: r2c5=7
Full House: r2c3=8
Full House: r5c5=3
Naked Single: r3c3=1
Naked Single: r9c3=3
Naked Single: r6c3=2
Full House: r4c3=5
Naked Single: r9c6=8
Naked Single: r4c9=9
Naked Single: r9c4=1
Full House: r7c4=3
Naked Single: r4c4=2
Naked Single: r7c9=1
Naked Single: r9c8=7
Full House: r6c8=1
Naked Single: r9c9=2
Full House: r5c9=5
Full House: r7c7=9
Full House: r9c2=9
Naked Single: r7c1=7
Full House: r7c2=8
Naked Single: r3c2=6
Naked Single: r6c1=6
Naked Single: r1c2=5
Full House: r3c1=9
Full House: r5c1=1
Full House: r3c6=3
Naked Single: r5c2=7
Full House: r4c2=3
Full House: r4c7=7
Full House: r6c7=3
Naked Single: r6c4=9
Full House: r6c6=7
Naked Single: r5c6=6
Full House: r1c6=9
Full House: r1c4=6
Full House: r5c4=8
|
sudoku_normal_hard_31
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
81....756...8.5293.....34.123...4517....8.3..541732869..52....4..71.8...4......78
|
813429756674815293952673481238964517796581342541732869185297634367148925429356178
|
8 1 . . . . 7 5 6
. . . 8 . 5 2 9 3
. . . . . 3 4 . 1
2 3 . . . 4 5 1 7
. . . . 8 . 3 . .
5 4 1 7 3 2 8 6 9
. . 5 2 . . . . 4
. . 7 1 . 8 . . .
4 . . . . . . 7 8
|
8 1 3 4 2 9 7 5 6
6 7 4 8 1 5 2 9 3
9 5 2 6 7 3 4 8 1
2 3 8 9 6 4 5 1 7
7 9 6 5 8 1 3 4 2
5 4 1 7 3 2 8 6 9
1 8 5 2 9 7 6 3 4
3 6 7 1 4 8 9 2 5
4 2 9 3 5 6 1 7 8
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2202m
|
813429756674815293952673481238964517796581342541732869185297634367148925429356178 #1 Easy (234)
Naked Single: r6c6=2
Naked Single: r6c1=5
Naked Single: r6c5=3
Naked Single: r6c7=8
Full House: r6c2=4
Naked Single: r4c8=1
Naked Single: r4c9=7
Naked Single: r5c7=3
Hidden Single: r1c8=5
Naked Single: r3c9=1
Naked Single: r2c9=3
Naked Single: r2c8=9
Naked Single: r7c9=4
Naked Single: r1c7=7
Full House: r3c8=8
Naked Single: r5c9=2
Full House: r5c8=4
Full House: r8c9=5
Naked Single: r7c8=3
Full House: r8c8=2
Naked Single: r1c6=9
Naked Single: r1c4=4
Naked Single: r3c4=6
Naked Single: r9c6=6
Naked Single: r1c5=2
Full House: r1c3=3
Naked Single: r4c4=9
Naked Single: r5c6=1
Full House: r7c6=7
Naked Single: r3c5=7
Full House: r2c5=1
Naked Single: r4c5=6
Full House: r5c4=5
Full House: r4c3=8
Full House: r9c4=3
Naked Single: r7c5=9
Naked Single: r3c1=9
Naked Single: r8c5=4
Full House: r9c5=5
Naked Single: r3c3=2
Full House: r3c2=5
Naked Single: r9c3=9
Naked Single: r5c3=6
Full House: r2c3=4
Naked Single: r8c2=6
Naked Single: r9c2=2
Full House: r9c7=1
Naked Single: r5c1=7
Full House: r5c2=9
Naked Single: r2c2=7
Full House: r7c2=8
Full House: r2c1=6
Naked Single: r7c1=1
Full House: r8c1=3
Full House: r8c7=9
Full House: r7c7=6
|
sudoku_normal_extremely_hard_31
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
81......6...8.52.......34..23...45......8......17...69..52.......71.8...4......78
|
813429756674815293952673481238964517796581342541732869185297634367148925429356178
|
8 1 . . . . . . 6
. . . 8 . 5 2 . .
. . . . . 3 4 . .
2 3 . . . 4 5 . .
. . . . 8 . . . .
. . 1 7 . . . 6 9
. . 5 2 . . . . .
. . 7 1 . 8 . . .
4 . . . . . . 7 8
|
8 1 3 4 2 9 7 5 6
6 7 4 8 1 5 2 9 3
9 5 2 6 7 3 4 8 1
2 3 8 9 6 4 5 1 7
7 9 6 5 8 1 3 4 2
5 4 1 7 3 2 8 6 9
1 8 5 2 9 7 6 3 4
3 6 7 1 4 8 9 2 5
4 2 9 3 5 6 1 7 8
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2202m
|
813429756674815293952673481238964517796581342541732869185297634367148925429356178 #1 Easy (234)
Naked Single: r6c6=2
Naked Single: r6c1=5
Naked Single: r6c5=3
Naked Single: r6c7=8
Full House: r6c2=4
Naked Single: r4c8=1
Naked Single: r4c9=7
Naked Single: r5c7=3
Hidden Single: r1c8=5
Naked Single: r3c9=1
Naked Single: r2c9=3
Naked Single: r2c8=9
Naked Single: r7c9=4
Naked Single: r1c7=7
Full House: r3c8=8
Naked Single: r5c9=2
Full House: r5c8=4
Full House: r8c9=5
Naked Single: r7c8=3
Full House: r8c8=2
Naked Single: r1c6=9
Naked Single: r1c4=4
Naked Single: r3c4=6
Naked Single: r9c6=6
Naked Single: r1c5=2
Full House: r1c3=3
Naked Single: r4c4=9
Naked Single: r5c6=1
Full House: r7c6=7
Naked Single: r3c5=7
Full House: r2c5=1
Naked Single: r4c5=6
Full House: r5c4=5
Full House: r4c3=8
Full House: r9c4=3
Naked Single: r7c5=9
Naked Single: r3c1=9
Naked Single: r8c5=4
Full House: r9c5=5
Naked Single: r3c3=2
Full House: r3c2=5
Naked Single: r9c3=9
Naked Single: r5c3=6
Full House: r2c3=4
Naked Single: r8c2=6
Naked Single: r9c2=2
Full House: r9c7=1
Naked Single: r5c1=7
Full House: r5c2=9
Naked Single: r2c2=7
Full House: r7c2=8
Full House: r2c1=6
Naked Single: r7c1=1
Full House: r8c1=3
Full House: r8c7=9
Full House: r7c7=6
|
sudoku_normal_hard_32
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
6..5...4...1.49..8.5..8.7.1..7....325..2.4.76.2....9..349.72.858654..2.7712..8..3
|
678521349231749568954386721487965132593214876126837954349172685865493217712658493
|
6 . . 5 . . . 4 .
. . 1 . 4 9 . . 8
. 5 . . 8 . 7 . 1
. . 7 . . . . 3 2
5 . . 2 . 4 . 7 6
. 2 . . . . 9 . .
3 4 9 . 7 2 . 8 5
8 6 5 4 . . 2 . 7
7 1 2 . . 8 . . 3
|
6 7 8 5 2 1 3 4 9
2 3 1 7 4 9 5 6 8
9 5 4 3 8 6 7 2 1
4 8 7 9 6 5 1 3 2
5 9 3 2 1 4 8 7 6
1 2 6 8 3 7 9 5 4
3 4 9 1 7 2 6 8 5
8 6 5 4 9 3 2 1 7
7 1 2 6 5 8 4 9 3
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2107m
|
678521349231749568954386721487965132593214876126837954349172685865493217712658493 #1 Easy (270)
Hidden Single: r5c8=7
Hidden Single: r2c5=4
Hidden Single: r4c9=2
Hidden Single: r7c6=2
Hidden Single: r8c9=7
Naked Single: r8c1=8
Naked Single: r8c2=6
Naked Single: r7c2=4
Naked Single: r8c3=5
Naked Single: r7c9=5
Naked Single: r9c3=2
Full House: r9c1=7
Naked Single: r2c9=8
Naked Single: r2c1=2
Naked Single: r1c7=3
Naked Single: r1c9=9
Full House: r6c9=4
Naked Single: r1c3=8
Naked Single: r6c1=1
Naked Single: r1c2=7
Naked Single: r5c3=3
Naked Single: r6c8=5
Naked Single: r1c6=1
Full House: r1c5=2
Naked Single: r2c2=3
Naked Single: r3c3=4
Full House: r6c3=6
Full House: r3c1=9
Full House: r4c1=4
Naked Single: r2c8=6
Naked Single: r8c6=3
Naked Single: r6c5=3
Naked Single: r2c4=7
Full House: r2c7=5
Full House: r3c8=2
Naked Single: r9c8=9
Full House: r8c8=1
Full House: r8c5=9
Naked Single: r3c6=6
Full House: r3c4=3
Naked Single: r6c6=7
Full House: r6c4=8
Full House: r4c6=5
Naked Single: r9c4=6
Naked Single: r7c7=6
Full House: r7c4=1
Full House: r9c5=5
Full House: r9c7=4
Full House: r4c4=9
Naked Single: r5c5=1
Full House: r4c5=6
Naked Single: r4c2=8
Full House: r4c7=1
Full House: r5c7=8
Full House: r5c2=9
|
sudoku_normal_extremely_hard_32
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
6..5...4...1..9....5..8.7.1..7....3.5..2.4..6.2....9..3.9.7..8....4..2...1...8..3
|
678521349231749568954386721487965132593214876126837954349172685865493217712658493
|
6 . . 5 . . . 4 .
. . 1 . . 9 . . .
. 5 . . 8 . 7 . 1
. . 7 . . . . 3 .
5 . . 2 . 4 . . 6
. 2 . . . . 9 . .
3 . 9 . 7 . . 8 .
. . . 4 . . 2 . .
. 1 . . . 8 . . 3
|
6 7 8 5 2 1 3 4 9
2 3 1 7 4 9 5 6 8
9 5 4 3 8 6 7 2 1
4 8 7 9 6 5 1 3 2
5 9 3 2 1 4 8 7 6
1 2 6 8 3 7 9 5 4
3 4 9 1 7 2 6 8 5
8 6 5 4 9 3 2 1 7
7 1 2 6 5 8 4 9 3
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2107m
|
678521349231749568954386721487965132593214876126837954349172685865493217712658493 #1 Easy (270)
Hidden Single: r5c8=7
Hidden Single: r2c5=4
Hidden Single: r4c9=2
Hidden Single: r7c6=2
Hidden Single: r8c9=7
Naked Single: r8c1=8
Naked Single: r8c2=6
Naked Single: r7c2=4
Naked Single: r8c3=5
Naked Single: r7c9=5
Naked Single: r9c3=2
Full House: r9c1=7
Naked Single: r2c9=8
Naked Single: r2c1=2
Naked Single: r1c7=3
Naked Single: r1c9=9
Full House: r6c9=4
Naked Single: r1c3=8
Naked Single: r6c1=1
Naked Single: r1c2=7
Naked Single: r5c3=3
Naked Single: r6c8=5
Naked Single: r1c6=1
Full House: r1c5=2
Naked Single: r2c2=3
Naked Single: r3c3=4
Full House: r6c3=6
Full House: r3c1=9
Full House: r4c1=4
Naked Single: r2c8=6
Naked Single: r8c6=3
Naked Single: r6c5=3
Naked Single: r2c4=7
Full House: r2c7=5
Full House: r3c8=2
Naked Single: r9c8=9
Full House: r8c8=1
Full House: r8c5=9
Naked Single: r3c6=6
Full House: r3c4=3
Naked Single: r6c6=7
Full House: r6c4=8
Full House: r4c6=5
Naked Single: r9c4=6
Naked Single: r7c7=6
Full House: r7c4=1
Full House: r9c5=5
Full House: r9c7=4
Full House: r4c4=9
Naked Single: r5c5=1
Full House: r4c5=6
Naked Single: r4c2=8
Full House: r4c7=1
Full House: r5c7=8
Full House: r5c2=9
|
sudoku_normal_hard_33
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
8..34.6.14.7..1...163.7...99.8435.1.6.5.2.9.3.219.6..45.9.1.462...2..1.52.4653897
|
852349671497561328163872549978435216645127983321986754539718462786294135214653897
|
8 . . 3 4 . 6 . 1
4 . 7 . . 1 . . .
1 6 3 . 7 . . . 9
9 . 8 4 3 5 . 1 .
6 . 5 . 2 . 9 . 3
. 2 1 9 . 6 . . 4
5 . 9 . 1 . 4 6 2
. . . 2 . . 1 . 5
2 . 4 6 5 3 8 9 7
|
8 5 2 3 4 9 6 7 1
4 9 7 5 6 1 3 2 8
1 6 3 8 7 2 5 4 9
9 7 8 4 3 5 2 1 6
6 4 5 1 2 7 9 8 3
3 2 1 9 8 6 7 5 4
5 3 9 7 1 8 4 6 2
7 8 6 2 9 4 1 3 5
2 1 4 6 5 3 8 9 7
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli 170714_sd_easy
|
852349671497561328163872549978435216645127983321986754539718462786294135214653897 #1 Easy (184)
Naked Single: r4c3=8
Naked Single: r2c1=4
Naked Single: r9c7=8
Naked Single: r4c5=3
Naked Single: r6c3=1
Naked Single: r7c3=9
Naked Single: r3c1=1
Naked Single: r7c9=2
Naked Single: r8c9=5
Naked Single: r9c4=6
Naked Single: r9c8=9
Full House: r9c2=1
Full House: r8c8=3
Naked Single: r4c2=7
Naked Single: r6c5=8
Naked Single: r1c3=2
Full House: r8c3=6
Naked Single: r4c9=6
Full House: r2c9=8
Full House: r4c7=2
Naked Single: r8c1=7
Full House: r6c1=3
Full House: r5c2=4
Naked Single: r8c2=8
Full House: r7c2=3
Naked Single: r5c6=7
Full House: r5c4=1
Full House: r5c8=8
Naked Single: r8c5=9
Full House: r2c5=6
Full House: r8c6=4
Naked Single: r1c6=9
Naked Single: r2c4=5
Naked Single: r3c7=5
Naked Single: r7c6=8
Full House: r3c6=2
Full House: r3c4=8
Full House: r7c4=7
Full House: r3c8=4
Naked Single: r1c2=5
Full House: r2c2=9
Full House: r1c8=7
Naked Single: r2c7=3
Full House: r2c8=2
Full House: r6c7=7
Full House: r6c8=5
|
sudoku_normal_extremely_hard_33
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
8..34.6.1..7..1....63.7...99..4.5.1.6.5.2.9.3.2.9.6..45...1.46....2..1..2.4.53..7
|
852349671497561328163872549978435216645127983321986754539718462786294135214653897
|
8 . . 3 4 . 6 . 1
. . 7 . . 1 . . .
. 6 3 . 7 . . . 9
9 . . 4 . 5 . 1 .
6 . 5 . 2 . 9 . 3
. 2 . 9 . 6 . . 4
5 . . . 1 . 4 6 .
. . . 2 . . 1 . .
2 . 4 . 5 3 . . 7
|
8 5 2 3 4 9 6 7 1
4 9 7 5 6 1 3 2 8
1 6 3 8 7 2 5 4 9
9 7 8 4 3 5 2 1 6
6 4 5 1 2 7 9 8 3
3 2 1 9 8 6 7 5 4
5 3 9 7 1 8 4 6 2
7 8 6 2 9 4 1 3 5
2 1 4 6 5 3 8 9 7
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli 170714_sd_easy
|
852349671497561328163872549978435216645127983321986754539718462786294135214653897 #1 Easy (184)
Naked Single: r4c3=8
Naked Single: r2c1=4
Naked Single: r9c7=8
Naked Single: r4c5=3
Naked Single: r6c3=1
Naked Single: r7c3=9
Naked Single: r3c1=1
Naked Single: r7c9=2
Naked Single: r8c9=5
Naked Single: r9c4=6
Naked Single: r9c8=9
Full House: r9c2=1
Full House: r8c8=3
Naked Single: r4c2=7
Naked Single: r6c5=8
Naked Single: r1c3=2
Full House: r8c3=6
Naked Single: r4c9=6
Full House: r2c9=8
Full House: r4c7=2
Naked Single: r8c1=7
Full House: r6c1=3
Full House: r5c2=4
Naked Single: r8c2=8
Full House: r7c2=3
Naked Single: r5c6=7
Full House: r5c4=1
Full House: r5c8=8
Naked Single: r8c5=9
Full House: r2c5=6
Full House: r8c6=4
Naked Single: r1c6=9
Naked Single: r2c4=5
Naked Single: r3c7=5
Naked Single: r7c6=8
Full House: r3c6=2
Full House: r3c4=8
Full House: r7c4=7
Full House: r3c8=4
Naked Single: r1c2=5
Full House: r2c2=9
Full House: r1c8=7
Naked Single: r2c7=3
Full House: r2c8=2
Full House: r6c7=7
Full House: r6c8=5
|
sudoku_normal_hard_34
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
91.8235....8.6..2....4...8..4937561.3.5.1..47167284.9..9...8....5..4.8....27.9.61
|
916823574478561923523497186249375618385916247167284395694138752751642839832759461
|
9 1 . 8 2 3 5 . .
. . 8 . 6 . . 2 .
. . . 4 . . . 8 .
. 4 9 3 7 5 6 1 .
3 . 5 . 1 . . 4 7
1 6 7 2 8 4 . 9 .
. 9 . . . 8 . . .
. 5 . . 4 . 8 . .
. . 2 7 . 9 . 6 1
|
9 1 6 8 2 3 5 7 4
4 7 8 5 6 1 9 2 3
5 2 3 4 9 7 1 8 6
2 4 9 3 7 5 6 1 8
3 8 5 9 1 6 2 4 7
1 6 7 2 8 4 3 9 5
6 9 4 1 3 8 7 5 2
7 5 1 6 4 2 8 3 9
8 3 2 7 5 9 4 6 1
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2111m
|
916823574478561923523497186249375618385916247167284395694138752751642839832759461 #1 Easy (246)
Naked Single: r1c4=8
Naked Single: r9c6=9
Hidden Single: r1c5=2
Hidden Single: r4c5=7
Hidden Single: r4c8=1
Naked Single: r4c3=9
Naked Single: r4c4=3
Naked Single: r6c5=8
Naked Single: r6c2=6
Naked Single: r5c3=5
Naked Single: r6c6=4
Naked Single: r5c8=4
Naked Single: r6c1=1
Naked Single: r5c6=6
Full House: r5c4=9
Naked Single: r6c7=3
Full House: r6c9=5
Naked Single: r1c8=7
Naked Single: r5c7=2
Full House: r4c9=8
Full House: r5c2=8
Full House: r4c1=2
Naked Single: r9c7=4
Naked Single: r8c8=3
Full House: r7c8=5
Naked Single: r9c2=3
Naked Single: r7c7=7
Naked Single: r9c1=8
Full House: r9c5=5
Naked Single: r7c9=2
Full House: r8c9=9
Naked Single: r7c5=3
Full House: r3c5=9
Naked Single: r2c2=7
Full House: r3c2=2
Naked Single: r3c7=1
Full House: r2c7=9
Naked Single: r2c6=1
Naked Single: r3c6=7
Full House: r2c4=5
Full House: r8c6=2
Naked Single: r2c1=4
Full House: r2c9=3
Naked Single: r1c3=6
Full House: r1c9=4
Full House: r3c9=6
Naked Single: r7c1=6
Naked Single: r3c1=5
Full House: r3c3=3
Full House: r8c1=7
Naked Single: r8c3=1
Full House: r7c3=4
Full House: r7c4=1
Full House: r8c4=6
|
sudoku_normal_extremely_hard_34
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
91...35....8.6..2....4...8..4...56..3...1...7..72...9..9...8....5..4.8....27...61
|
916823574478561923523497186249375618385916247167284395694138752751642839832759461
|
9 1 . . . 3 5 . .
. . 8 . 6 . . 2 .
. . . 4 . . . 8 .
. 4 . . . 5 6 . .
3 . . . 1 . . . 7
. . 7 2 . . . 9 .
. 9 . . . 8 . . .
. 5 . . 4 . 8 . .
. . 2 7 . . . 6 1
|
9 1 6 8 2 3 5 7 4
4 7 8 5 6 1 9 2 3
5 2 3 4 9 7 1 8 6
2 4 9 3 7 5 6 1 8
3 8 5 9 1 6 2 4 7
1 6 7 2 8 4 3 9 5
6 9 4 1 3 8 7 5 2
7 5 1 6 4 2 8 3 9
8 3 2 7 5 9 4 6 1
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2111m
|
916823574478561923523497186249375618385916247167284395694138752751642839832759461 #1 Easy (246)
Naked Single: r1c4=8
Naked Single: r9c6=9
Hidden Single: r1c5=2
Hidden Single: r4c5=7
Hidden Single: r4c8=1
Naked Single: r4c3=9
Naked Single: r4c4=3
Naked Single: r6c5=8
Naked Single: r6c2=6
Naked Single: r5c3=5
Naked Single: r6c6=4
Naked Single: r5c8=4
Naked Single: r6c1=1
Naked Single: r5c6=6
Full House: r5c4=9
Naked Single: r6c7=3
Full House: r6c9=5
Naked Single: r1c8=7
Naked Single: r5c7=2
Full House: r4c9=8
Full House: r5c2=8
Full House: r4c1=2
Naked Single: r9c7=4
Naked Single: r8c8=3
Full House: r7c8=5
Naked Single: r9c2=3
Naked Single: r7c7=7
Naked Single: r9c1=8
Full House: r9c5=5
Naked Single: r7c9=2
Full House: r8c9=9
Naked Single: r7c5=3
Full House: r3c5=9
Naked Single: r2c2=7
Full House: r3c2=2
Naked Single: r3c7=1
Full House: r2c7=9
Naked Single: r2c6=1
Naked Single: r3c6=7
Full House: r2c4=5
Full House: r8c6=2
Naked Single: r2c1=4
Full House: r2c9=3
Naked Single: r1c3=6
Full House: r1c9=4
Full House: r3c9=6
Naked Single: r7c1=6
Naked Single: r3c1=5
Full House: r3c3=3
Full House: r8c1=7
Naked Single: r8c3=1
Full House: r7c3=4
Full House: r7c4=1
Full House: r8c4=6
|
sudoku_normal_hard_35
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..4.6..599.3..76.28..9.....43.8..1.5697.14.2...8..3..6.....52.12.51..9...6..7.5..
|
174362859953487612826951743432896175697514328518723496789645231245138967361279584
|
. . 4 . 6 . . 5 9
9 . 3 . . 7 6 . 2
8 . . 9 . . . . .
4 3 . 8 . . 1 . 5
6 9 7 . 1 4 . 2 .
. . 8 . . 3 . . 6
. . . . . 5 2 . 1
2 . 5 1 . . 9 . .
. 6 . . 7 . 5 . .
|
1 7 4 3 6 2 8 5 9
9 5 3 4 8 7 6 1 2
8 2 6 9 5 1 7 4 3
4 3 2 8 9 6 1 7 5
6 9 7 5 1 4 3 2 8
5 1 8 7 2 3 4 9 6
7 8 9 6 4 5 2 3 1
2 4 5 1 3 8 9 6 7
3 6 1 2 7 9 5 8 4
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2309h1
|
174362859953487612826951743432896175697514328518723496789645231245138967361279584 #1 Medium (594)
Hidden Single: r7c7=2
Locked Candidates Type 1 (Pointing): 9 in b1 => r79c1<>9
Locked Candidates Type 1 (Pointing): 6 in b9 => r23c8<>6
Hidden Pair: 4,8 in r78c2 => r78c2<>3, r78c2<>7, r8c2<>5
Hidden Single: r4c2=3
Hidden Single: r8c3=5
Locked Candidates Type 1 (Pointing): 7 in b7 => r7c8<>7
Naked Triple: 4,7,9 in r46c8,r6c7 => r45c9,r5c7<>7, r4c9<>9, r5c79<>4
Naked Single: r4c9=5
Hidden Single: r1c9=9
Hidden Single: r2c1=9
Hidden Single: r2c7=6
Hidden Single: r5c1=6
Naked Single: r5c3=7
Naked Single: r5c6=4
Naked Single: r4c3=2
Naked Single: r7c3=9
Naked Single: r5c4=5
Naked Single: r4c5=9
Naked Single: r9c3=1
Full House: r3c3=6
Naked Single: r2c4=4
Naked Single: r4c6=6
Full House: r4c8=7
Naked Single: r6c5=2
Full House: r6c4=7
Naked Single: r9c1=3
Naked Single: r8c6=8
Naked Single: r6c7=4
Naked Single: r7c1=7
Naked Single: r9c4=2
Naked Single: r8c2=4
Full House: r7c2=8
Naked Single: r6c8=9
Naked Single: r1c1=1
Full House: r6c1=5
Full House: r6c2=1
Naked Single: r1c4=3
Full House: r7c4=6
Naked Single: r9c6=9
Naked Single: r8c5=3
Full House: r7c5=4
Full House: r7c8=3
Naked Single: r1c6=2
Full House: r3c6=1
Naked Single: r2c2=5
Naked Single: r3c5=5
Full House: r2c5=8
Full House: r2c8=1
Naked Single: r8c8=6
Full House: r8c9=7
Naked Single: r1c2=7
Full House: r1c7=8
Full House: r3c2=2
Naked Single: r3c8=4
Full House: r9c8=8
Full House: r9c9=4
Naked Single: r5c7=3
Full House: r3c7=7
Full House: r3c9=3
Full House: r5c9=8
|
sudoku_normal_extremely_hard_35
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..4.6..5...3..7..28..9.....4..8..1...9..1..2...8..3..6.....5..12..1..9...6..7.5..
|
174362859953487612826951743432896175697514328518723496789645231245138967361279584
|
. . 4 . 6 . . 5 .
. . 3 . . 7 . . 2
8 . . 9 . . . . .
4 . . 8 . . 1 . .
. 9 . . 1 . . 2 .
. . 8 . . 3 . . 6
. . . . . 5 . . 1
2 . . 1 . . 9 . .
. 6 . . 7 . 5 . .
|
1 7 4 3 6 2 8 5 9
9 5 3 4 8 7 6 1 2
8 2 6 9 5 1 7 4 3
4 3 2 8 9 6 1 7 5
6 9 7 5 1 4 3 2 8
5 1 8 7 2 3 4 9 6
7 8 9 6 4 5 2 3 1
2 4 5 1 3 8 9 6 7
3 6 1 2 7 9 5 8 4
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2309h1
|
174362859953487612826951743432896175697514328518723496789645231245138967361279584 #1 Medium (594)
Hidden Single: r7c7=2
Locked Candidates Type 1 (Pointing): 9 in b1 => r79c1<>9
Locked Candidates Type 1 (Pointing): 6 in b9 => r23c8<>6
Hidden Pair: 4,8 in r78c2 => r78c2<>3, r78c2<>7, r8c2<>5
Hidden Single: r4c2=3
Hidden Single: r8c3=5
Locked Candidates Type 1 (Pointing): 7 in b7 => r7c8<>7
Naked Triple: 4,7,9 in r46c8,r6c7 => r45c9,r5c7<>7, r4c9<>9, r5c79<>4
Naked Single: r4c9=5
Hidden Single: r1c9=9
Hidden Single: r2c1=9
Hidden Single: r2c7=6
Hidden Single: r5c1=6
Naked Single: r5c3=7
Naked Single: r5c6=4
Naked Single: r4c3=2
Naked Single: r7c3=9
Naked Single: r5c4=5
Naked Single: r4c5=9
Naked Single: r9c3=1
Full House: r3c3=6
Naked Single: r2c4=4
Naked Single: r4c6=6
Full House: r4c8=7
Naked Single: r6c5=2
Full House: r6c4=7
Naked Single: r9c1=3
Naked Single: r8c6=8
Naked Single: r6c7=4
Naked Single: r7c1=7
Naked Single: r9c4=2
Naked Single: r8c2=4
Full House: r7c2=8
Naked Single: r6c8=9
Naked Single: r1c1=1
Full House: r6c1=5
Full House: r6c2=1
Naked Single: r1c4=3
Full House: r7c4=6
Naked Single: r9c6=9
Naked Single: r8c5=3
Full House: r7c5=4
Full House: r7c8=3
Naked Single: r1c6=2
Full House: r3c6=1
Naked Single: r2c2=5
Naked Single: r3c5=5
Full House: r2c5=8
Full House: r2c8=1
Naked Single: r8c8=6
Full House: r8c9=7
Naked Single: r1c2=7
Full House: r1c7=8
Full House: r3c2=2
Naked Single: r3c8=4
Full House: r9c8=8
Full House: r9c9=4
Naked Single: r5c7=3
Full House: r3c7=7
Full House: r3c9=3
Full House: r5c9=8
|
sudoku_normal_hard_36
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..12.36...34..6.8..5..8...33..1.2.5...9..87...2.9.4..17.382..4..9.3.71.8..8..5...
|
871243695934516287652789413386172954149658732527934861763821549495367128218495376
|
. . 1 2 . 3 6 . .
. 3 4 . . 6 . 8 .
. 5 . . 8 . . . 3
3 . . 1 . 2 . 5 .
. . 9 . . 8 7 . .
. 2 . 9 . 4 . . 1
7 . 3 8 2 . . 4 .
. 9 . 3 . 7 1 . 8
. . 8 . . 5 . . .
|
8 7 1 2 4 3 6 9 5
9 3 4 5 1 6 2 8 7
6 5 2 7 8 9 4 1 3
3 8 6 1 7 2 9 5 4
1 4 9 6 5 8 7 3 2
5 2 7 9 3 4 8 6 1
7 6 3 8 2 1 5 4 9
4 9 5 3 6 7 1 2 8
2 1 8 4 9 5 3 7 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk1907h2
|
871243695934516287652789413386172954149658732527934861763821549495367128218495376 #1 Medium (750)
Locked Candidates Type 1 (Pointing): 7 in b5 => r1289c5<>7
Locked Candidates Type 1 (Pointing): 8 in b5 => r5c129<>8
Naked Pair: 6,7 in r4c35 => r4c29<>6, r4c2<>7
Locked Candidates Type 1 (Pointing): 7 in b4 => r13c3<>7
Hidden Pair: 1,9 in r7c6,r9c5 => r7c6<>8, r9c5<>4, r9c5<>6
Hidden Pair: 4,5 in r1c59 => r1c5<>1, r1c5<>3, r1c59<>9, r1c9<>7
Naked Triple: 4,5,7 in r1c5,r23c4 => r13c6<>7, r2c5<>5
Hidden Single: r8c6=7
Hidden Single: r8c9=8
Hidden Single: r5c6=8
Hidden Single: r7c4=8
Hidden Single: r1c6=3
Naked Single: r1c3=1
Hidden Single: r7c3=3
Hidden Single: r2c2=3
Hidden Single: r3c8=1
Naked Single: r3c6=9
Full House: r7c6=1
Naked Single: r2c5=1
Naked Single: r7c2=6
Naked Single: r9c5=9
Hidden Single: r1c2=7
Naked Single: r1c8=9
Naked Single: r1c1=8
Hidden Single: r3c4=7
Naked Single: r2c4=5
Full House: r1c5=4
Full House: r1c9=5
Naked Single: r2c7=2
Naked Single: r5c4=6
Full House: r9c4=4
Full House: r8c5=6
Naked Single: r7c9=9
Full House: r7c7=5
Naked Single: r2c1=9
Full House: r2c9=7
Full House: r3c7=4
Naked Single: r9c7=3
Naked Single: r4c5=7
Naked Single: r9c2=1
Naked Single: r8c8=2
Naked Single: r4c9=4
Naked Single: r6c7=8
Full House: r4c7=9
Naked Single: r4c3=6
Full House: r4c2=8
Full House: r5c2=4
Naked Single: r9c1=2
Naked Single: r5c8=3
Naked Single: r8c3=5
Full House: r8c1=4
Naked Single: r9c9=6
Full House: r5c9=2
Full House: r6c8=6
Full House: r9c8=7
Naked Single: r3c3=2
Full House: r3c1=6
Full House: r6c3=7
Naked Single: r6c1=5
Full House: r5c1=1
Full House: r5c5=5
Full House: r6c5=3
|
sudoku_normal_extremely_hard_36
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
...2..6....4..6.8..5..8...33..1.2.5...9...7...2.9.4..17...2..4..9.3..1....8..5...
|
871243695934516287652789413386172954149658732527934861763821549495367128218495376
|
. . . 2 . . 6 . .
. . 4 . . 6 . 8 .
. 5 . . 8 . . . 3
3 . . 1 . 2 . 5 .
. . 9 . . . 7 . .
. 2 . 9 . 4 . . 1
7 . . . 2 . . 4 .
. 9 . 3 . . 1 . .
. . 8 . . 5 . . .
|
8 7 1 2 4 3 6 9 5
9 3 4 5 1 6 2 8 7
6 5 2 7 8 9 4 1 3
3 8 6 1 7 2 9 5 4
1 4 9 6 5 8 7 3 2
5 2 7 9 3 4 8 6 1
7 6 3 8 2 1 5 4 9
4 9 5 3 6 7 1 2 8
2 1 8 4 9 5 3 7 6
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk1907h2
|
871243695934516287652789413386172954149658732527934861763821549495367128218495376 #1 Medium (750)
Locked Candidates Type 1 (Pointing): 7 in b5 => r1289c5<>7
Locked Candidates Type 1 (Pointing): 8 in b5 => r5c129<>8
Naked Pair: 6,7 in r4c35 => r4c29<>6, r4c2<>7
Locked Candidates Type 1 (Pointing): 7 in b4 => r13c3<>7
Hidden Pair: 1,9 in r7c6,r9c5 => r7c6<>8, r9c5<>4, r9c5<>6
Hidden Pair: 4,5 in r1c59 => r1c5<>1, r1c5<>3, r1c59<>9, r1c9<>7
Naked Triple: 4,5,7 in r1c5,r23c4 => r13c6<>7, r2c5<>5
Hidden Single: r8c6=7
Hidden Single: r8c9=8
Hidden Single: r5c6=8
Hidden Single: r7c4=8
Hidden Single: r1c6=3
Naked Single: r1c3=1
Hidden Single: r7c3=3
Hidden Single: r2c2=3
Hidden Single: r3c8=1
Naked Single: r3c6=9
Full House: r7c6=1
Naked Single: r2c5=1
Naked Single: r7c2=6
Naked Single: r9c5=9
Hidden Single: r1c2=7
Naked Single: r1c8=9
Naked Single: r1c1=8
Hidden Single: r3c4=7
Naked Single: r2c4=5
Full House: r1c5=4
Full House: r1c9=5
Naked Single: r2c7=2
Naked Single: r5c4=6
Full House: r9c4=4
Full House: r8c5=6
Naked Single: r7c9=9
Full House: r7c7=5
Naked Single: r2c1=9
Full House: r2c9=7
Full House: r3c7=4
Naked Single: r9c7=3
Naked Single: r4c5=7
Naked Single: r9c2=1
Naked Single: r8c8=2
Naked Single: r4c9=4
Naked Single: r6c7=8
Full House: r4c7=9
Naked Single: r4c3=6
Full House: r4c2=8
Full House: r5c2=4
Naked Single: r9c1=2
Naked Single: r5c8=3
Naked Single: r8c3=5
Full House: r8c1=4
Naked Single: r9c9=6
Full House: r5c9=2
Full House: r6c8=6
Full House: r9c8=7
Naked Single: r3c3=2
Full House: r3c1=6
Full House: r6c3=7
Naked Single: r6c1=5
Full House: r5c1=1
Full House: r5c5=5
Full House: r6c5=3
|
sudoku_normal_hard_37
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..1.....9.4.2...6.8...3.4..182394657365.7.2944795..381..4.1...6.9...3.7.51....8..
|
621487539943251768857936412182394657365178294479562381734815926298643175516729843
|
. . 1 . . . . . 9
. 4 . 2 . . . 6 .
8 . . . 3 . 4 . .
1 8 2 3 9 4 6 5 7
3 6 5 . 7 . 2 9 4
4 7 9 5 . . 3 8 1
. . 4 . 1 . . . 6
. 9 . . . 3 . 7 .
5 1 . . . . 8 . .
|
6 2 1 4 8 7 5 3 9
9 4 3 2 5 1 7 6 8
8 5 7 9 3 6 4 1 2
1 8 2 3 9 4 6 5 7
3 6 5 1 7 8 2 9 4
4 7 9 5 6 2 3 8 1
7 3 4 8 1 5 9 2 6
2 9 8 6 4 3 1 7 5
5 1 6 7 2 9 8 4 3
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk1912e
|
621487539943251768857936412182394657365178294479562381734815926298643175516729843 #1 Easy (256)
Naked Single: r6c2=7
Naked Single: r4c8=5
Naked Single: r6c3=9
Naked Single: r4c9=7
Naked Single: r5c7=2
Naked Single: r6c1=4
Naked Single: r4c7=6
Full House: r5c9=4
Naked Single: r5c1=3
Full House: r5c3=5
Naked Single: r4c5=9
Full House: r4c4=3
Hidden Single: r9c2=1
Hidden Single: r8c7=1
Hidden Single: r9c8=4
Hidden Single: r2c9=8
Naked Single: r2c5=5
Naked Single: r2c7=7
Naked Single: r1c7=5
Full House: r7c7=9
Naked Single: r2c1=9
Naked Single: r2c3=3
Full House: r2c6=1
Naked Single: r3c9=2
Naked Single: r1c2=2
Naked Single: r5c6=8
Full House: r5c4=1
Naked Single: r1c8=3
Full House: r3c8=1
Full House: r7c8=2
Naked Single: r3c2=5
Full House: r7c2=3
Naked Single: r8c9=5
Full House: r9c9=3
Naked Single: r7c1=7
Naked Single: r1c1=6
Full House: r3c3=7
Full House: r8c1=2
Naked Single: r7c4=8
Full House: r7c6=5
Naked Single: r9c3=6
Full House: r8c3=8
Naked Single: r1c6=7
Naked Single: r9c5=2
Naked Single: r1c4=4
Full House: r1c5=8
Naked Single: r6c5=6
Full House: r6c6=2
Full House: r8c5=4
Full House: r8c4=6
Naked Single: r9c6=9
Full House: r3c6=6
Full House: r3c4=9
Full House: r9c4=7
|
sudoku_normal_extremely_hard_37
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
..1.....9.4.2...6.8...3.4..182..4....6..7..9....5..381..4.1...6.9...3.7.5.....8..
|
621487539943251768857936412182394657365178294479562381734815926298643175516729843
|
. . 1 . . . . . 9
. 4 . 2 . . . 6 .
8 . . . 3 . 4 . .
1 8 2 . . 4 . . .
. 6 . . 7 . . 9 .
. . . 5 . . 3 8 1
. . 4 . 1 . . . 6
. 9 . . . 3 . 7 .
5 . . . . . 8 . .
|
6 2 1 4 8 7 5 3 9
9 4 3 2 5 1 7 6 8
8 5 7 9 3 6 4 1 2
1 8 2 3 9 4 6 5 7
3 6 5 1 7 8 2 9 4
4 7 9 5 6 2 3 8 1
7 3 4 8 1 5 9 2 6
2 9 8 6 4 3 1 7 5
5 1 6 7 2 9 8 4 3
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk1912e
|
621487539943251768857936412182394657365178294479562381734815926298643175516729843 #1 Easy (256)
Naked Single: r6c2=7
Naked Single: r4c8=5
Naked Single: r6c3=9
Naked Single: r4c9=7
Naked Single: r5c7=2
Naked Single: r6c1=4
Naked Single: r4c7=6
Full House: r5c9=4
Naked Single: r5c1=3
Full House: r5c3=5
Naked Single: r4c5=9
Full House: r4c4=3
Hidden Single: r9c2=1
Hidden Single: r8c7=1
Hidden Single: r9c8=4
Hidden Single: r2c9=8
Naked Single: r2c5=5
Naked Single: r2c7=7
Naked Single: r1c7=5
Full House: r7c7=9
Naked Single: r2c1=9
Naked Single: r2c3=3
Full House: r2c6=1
Naked Single: r3c9=2
Naked Single: r1c2=2
Naked Single: r5c6=8
Full House: r5c4=1
Naked Single: r1c8=3
Full House: r3c8=1
Full House: r7c8=2
Naked Single: r3c2=5
Full House: r7c2=3
Naked Single: r8c9=5
Full House: r9c9=3
Naked Single: r7c1=7
Naked Single: r1c1=6
Full House: r3c3=7
Full House: r8c1=2
Naked Single: r7c4=8
Full House: r7c6=5
Naked Single: r9c3=6
Full House: r8c3=8
Naked Single: r1c6=7
Naked Single: r9c5=2
Naked Single: r1c4=4
Full House: r1c5=8
Naked Single: r6c5=6
Full House: r6c6=2
Full House: r8c5=4
Full House: r8c4=6
Naked Single: r9c6=9
Full House: r3c6=6
Full House: r3c4=9
Full House: r9c4=7
|
sudoku_normal_hard_38
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
7..3148.916.7..3.44.3..5..19..2.6.376.75819..24...3..65..4..7..8....2.9.3.1.6....
|
752314869169728354483695271918246537637581942245973186526439718874152693391867425
|
7 . . 3 1 4 8 . 9
1 6 . 7 . . 3 . 4
4 . 3 . . 5 . . 1
9 . . 2 . 6 . 3 7
6 . 7 5 8 1 9 . .
2 4 . . . 3 . . 6
5 . . 4 . . 7 . .
8 . . . . 2 . 9 .
3 . 1 . 6 . . . .
|
7 5 2 3 1 4 8 6 9
1 6 9 7 2 8 3 5 4
4 8 3 6 9 5 2 7 1
9 1 8 2 4 6 5 3 7
6 3 7 5 8 1 9 4 2
2 4 5 9 7 3 1 8 6
5 2 6 4 3 9 7 1 8
8 7 4 1 5 2 6 9 3
3 9 1 8 6 7 4 2 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2110m
|
752314869169728354483695271918246537637581942245973186526439718874152693391867425 #1 Easy (294)
Hidden Single: r1c9=9
Hidden Single: r2c1=1
Naked Single: r6c1=2
Hidden Single: r5c1=6
Hidden Single: r1c4=3
Hidden Single: r2c7=3
Hidden Single: r4c9=7
Hidden Single: r4c6=6
Naked Single: r1c6=4
Naked Single: r1c1=7
Naked Single: r5c6=1
Naked Single: r3c1=4
Full House: r9c1=3
Naked Single: r5c4=5
Naked Single: r8c2=7
Naked Single: r4c5=4
Naked Single: r5c2=3
Naked Single: r5c9=2
Full House: r5c8=4
Naked Single: r6c4=9
Full House: r6c5=7
Naked Single: r8c4=1
Naked Single: r9c4=8
Full House: r3c4=6
Naked Single: r7c6=9
Naked Single: r9c9=5
Naked Single: r3c7=2
Naked Single: r2c6=8
Full House: r9c6=7
Naked Single: r7c2=2
Naked Single: r7c5=3
Full House: r8c5=5
Naked Single: r8c9=3
Full House: r7c9=8
Naked Single: r9c8=2
Naked Single: r2c8=5
Naked Single: r3c5=9
Full House: r2c5=2
Full House: r2c3=9
Naked Single: r3c8=7
Full House: r1c8=6
Full House: r3c2=8
Naked Single: r9c7=4
Full House: r9c2=9
Naked Single: r1c2=5
Full House: r1c3=2
Full House: r4c2=1
Naked Single: r7c3=6
Full House: r7c8=1
Full House: r8c7=6
Full House: r8c3=4
Full House: r6c8=8
Naked Single: r4c7=5
Full House: r4c3=8
Full House: r6c3=5
Full House: r6c7=1
|
sudoku_normal_extremely_hard_38
| 9
| 9
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
"
|
None
|
....1.8...6.7....4..3..5..19..2...3...7.8.9...4...3..65..4..7..8....2.9...1.6....
|
752314869169728354483695271918246537637581942245973186526439718874152693391867425
|
. . . . 1 . 8 . .
. 6 . 7 . . . . 4
. . 3 . . 5 . . 1
9 . . 2 . . . 3 .
. . 7 . 8 . 9 . .
. 4 . . . 3 . . 6
5 . . 4 . . 7 . .
8 . . . . 2 . 9 .
. . 1 . 6 . . . .
|
7 5 2 3 1 4 8 6 9
1 6 9 7 2 8 3 5 4
4 8 3 6 9 5 2 7 1
9 1 8 2 4 6 5 3 7
6 3 7 5 8 1 9 4 2
2 4 5 9 7 3 1 8 6
5 2 6 4 3 9 7 1 8
8 7 4 1 5 2 6 9 3
3 9 1 8 6 7 4 2 5
|
Complete the sudoku board based on the rules and visual elements.
|
Nikoli nhk2110m
|
752314869169728354483695271918246537637581942245973186526439718874152693391867425 #1 Easy (294)
Hidden Single: r1c9=9
Hidden Single: r2c1=1
Naked Single: r6c1=2
Hidden Single: r5c1=6
Hidden Single: r1c4=3
Hidden Single: r2c7=3
Hidden Single: r4c9=7
Hidden Single: r4c6=6
Naked Single: r1c6=4
Naked Single: r1c1=7
Naked Single: r5c6=1
Naked Single: r3c1=4
Full House: r9c1=3
Naked Single: r5c4=5
Naked Single: r8c2=7
Naked Single: r4c5=4
Naked Single: r5c2=3
Naked Single: r5c9=2
Full House: r5c8=4
Naked Single: r6c4=9
Full House: r6c5=7
Naked Single: r8c4=1
Naked Single: r9c4=8
Full House: r3c4=6
Naked Single: r7c6=9
Naked Single: r9c9=5
Naked Single: r3c7=2
Naked Single: r2c6=8
Full House: r9c6=7
Naked Single: r7c2=2
Naked Single: r7c5=3
Full House: r8c5=5
Naked Single: r8c9=3
Full House: r7c9=8
Naked Single: r9c8=2
Naked Single: r2c8=5
Naked Single: r3c5=9
Full House: r2c5=2
Full House: r2c3=9
Naked Single: r3c8=7
Full House: r1c8=6
Full House: r3c2=8
Naked Single: r9c7=4
Full House: r9c2=9
Naked Single: r1c2=5
Full House: r1c3=2
Full House: r4c2=1
Naked Single: r7c3=6
Full House: r7c8=1
Full House: r8c7=6
Full House: r8c3=4
Full House: r6c8=8
Naked Single: r4c7=5
Full House: r4c3=8
Full House: r6c3=5
Full House: r6c7=1
|
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