9
1
8
6
4
5
3
7
2
2
4
6
7
3
1
5
8
9
5
3
7
9
8
2
4
6
1
1
8
7
5
6
9
4
2
3
9
5
3
4
2
7
1
6
8
2
4
6
8
1
3
7
5
9
7
3
4
8
5
1
2
9
6
6
9
5
3
7
2
8
1
4
1
2
8
6
9
4
3
7
5
This Sudoku Puzzle has 63 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Pair, Turbot Fish, undefined techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 4 → 7 (Hidden Single)
- Row 6 / Column 7 → 7 (Hidden Single)
- Row 1 / Column 9 → 7 (Hidden Single)
- Row 8 / Column 8 → 9 (Hidden Single)
- Row 2 / Column 6 → 1 (Hidden Single)
- Row 3 / Column 4 → 5 (Naked Single)
- Row 7 / Column 6 → 5 (Naked Single)
- Row 6 / Column 4 → 1 (Naked Single)
- Row 8 / Column 4 → 3 (Naked Single)
- Row 4 / Column 4 → 9 (Full House)
- Row 8 / Column 6 → 2 (Naked Single)
- Row 6 / Column 6 → 8 (Naked Single)
- Row 4 / Column 6 → 3 (Full House)
- Row 6 / Column 5 → 6 (Hidden Single)
- Row 4 / Column 5 → 5 (Naked Single)
- Row 5 / Column 5 → 2 (Full House)
- Row 4 / Column 9 → 6 (Hidden Single)
- Row 4 / Column 1 → 1 (Hidden Single)
- Row 9 / Column 2 → 9 (Hidden Single)
- Row 9 / Column 5 → 1 (Naked Single)
- Row 8 / Column 5 → 7 (Naked Single)
- Row 7 / Column 5 → 9 (Full House)
- Row 1 / Column 8 → 3 (Hidden Single)
- Row 6 / Column 2 → 2 (Hidden Single)
- Row 7 / Column 1 → 7 (Hidden Single)
- Row 3 / Column 1 → 3 (Hidden Single)
- Row 7 / Column 3 → 4 (Hidden Single)
- Row 3 / Column 3 → 2 (Hidden Single)
- Row 9 / Column 1 → 2 (Hidden Single)
- Row 8 / Column 3 → 1 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 4 in b6 => r2c8<>4
- Locked Candidates Type 1 (Pointing): 8 in b7 => r8c7<>8
- Locked Candidates Type 2 (Claiming): 4 in r2 => r1c1<>4
- Naked Pair: 1,8 in r37c9 => r5c9<>8
- Turbot Fish: 5 r1c7 =5= r2c8 -5- r6c8 =5= r6c1 => r1c1<>5
- 2-String Kite: 5 in r1c7,r8c2 (connected by r1c3,r2c2) => r8c7<>5
- Row 8 / Column 7 → 6 (Naked Single)
- Row 2 / Column 1 → 6 (Hidden Single)
- Row 9 / Column 3 → 6 (Hidden Single)
- Row 2 / Column 2 → 4 (Hidden Single)
- Row 4 / Column 2 → 8 (Naked Single)
- Row 4 / Column 8 → 4 (Full House)
- Row 8 / Column 2 → 5 (Full House)
- Row 8 / Column 1 → 8 (Full House)
- Row 6 / Column 8 → 5 (Naked Single)
- Row 2 / Column 8 → 8 (Full House)
- Row 6 / Column 1 → 4 (Full House)
- Row 2 / Column 3 → 5 (Full House)
- Row 1 / Column 1 → 9 (Naked Single)
- Row 1 / Column 3 → 8 (Full House)
- Row 5 / Column 3 → 9 (Full House)
- Row 5 / Column 1 → 5 (Full House)
- Row 5 / Column 9 → 3 (Naked Single)
- Row 5 / Column 7 → 8 (Full House)
- Row 3 / Column 9 → 1 (Naked Single)
- Row 1 / Column 5 → 4 (Naked Single)
- Row 1 / Column 7 → 5 (Full House)
- Row 3 / Column 7 → 4 (Full House)
- Row 3 / Column 5 → 8 (Full House)
- Row 9 / Column 9 → 5 (Naked Single)
- Row 7 / Column 9 → 8 (Full House)
- Row 7 / Column 7 → 1 (Full House)
- Row 9 / Column 7 → 3 (Full House)
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