2
5
4
6
7
9
2
9
1
4
4
2
6
1
1
3
6
3
4
1
8
2
8
2
This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), undefined, Naked Single, Naked Triple, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 2 → 4 (Hidden Single)
- Row 6 / Column 9 → 2 (Hidden Single)
- Row 1 / Column 5 → 2 (Hidden Single)
- Row 7 / Column 1 → 2 (Hidden Single)
- Row 7 / Column 6 → 4 (Hidden Single)
- Row 9 / Column 8 → 4 (Hidden Single)
- Row 4 / Column 2 → 2 (Hidden Single)
- Row 4 / Column 1 → 6 (Hidden Single)
- Row 6 / Column 3 → 3 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b4 => r5c579<>5
- Locked Candidates Type 2 (Claiming): 5 in c5 => r8c46,r9c4<>5
- X-Wing: 6 r37 c39 => r1c39,r89c9,r9c3<>6
- X-Wing: 9 r57 c59 => r39c5,r89c9<>9
- Row 3 / Column 5 → 3 (Naked Single)
- Naked Triple: 3,5,7 in r7c7,r89c9 => r7c9,r8c8,r9c7<>5, r7c9,r8c8,r9c7<>7, r9c7<>3
- Row 9 / Column 7 → 1 (Naked Single)
- Row 1 / Column 7 → 3 (Hidden Single)
- Row 8 / Column 1 → 1 (Hidden Single)
- Row 2 / Column 1 → 3 (Hidden Single)
- Row 3 / Column 3 → 1 (Hidden Single)
- Row 8 / Column 9 → 5 (Hidden Single)
- Row 7 / Column 7 → 7 (Naked Single)
- Row 9 / Column 9 → 3 (Naked Single)
- Row 3 / Column 9 → 6 (Hidden Single)
- Row 7 / Column 9 → 9 (Naked Single)
- Row 8 / Column 8 → 6 (Full House)
- Row 7 / Column 5 → 5 (Naked Single)
- Row 7 / Column 3 → 6 (Full House)
- Row 9 / Column 5 → 7 (Naked Single)
- Row 5 / Column 5 → 9 (Full House)
- Row 1 / Column 2 → 6 (Hidden Single)
- Row 4 / Column 7 → 5 (Hidden Single)
- Row 4 / Column 8 → 7 (Naked Single)
- Row 6 / Column 8 → 9 (Naked Single)
- Row 3 / Column 7 → 4 (Hidden Single)
- Row 5 / Column 7 → 8 (Full House)
- Row 5 / Column 9 → 4 (Full House)
- Row 9 / Column 4 → 6 (Hidden Single)
- Row 8 / Column 2 → 7 (Hidden Single)
- Row 6 / Column 2 → 8 (Naked Single)
- Row 9 / Column 2 → 9 (Full House)
- Row 6 / Column 6 → 5 (Naked Single)
- Row 6 / Column 4 → 7 (Full House)
- Row 2 / Column 9 → 7 (Hidden Single)
- Row 1 / Column 9 → 8 (Full House)
- Row 1 / Column 3 → 7 (Naked Single)
- Row 1 / Column 1 → 9 (Naked Single)
- Row 3 / Column 1 → 8 (Full House)
- Row 3 / Column 4 → 9 (Full House)
- Row 5 / Column 3 → 5 (Naked Single)
- Row 5 / Column 1 → 7 (Full House)
- Row 9 / Column 1 → 5 (Full House)
- Row 9 / Column 3 → 8 (Full House)
- Row 1 / Column 6 → 1 (Naked Single)
- Row 1 / Column 8 → 5 (Full House)
- Row 2 / Column 8 → 1 (Full House)
- Row 8 / Column 4 → 3 (Naked Single)
- Row 8 / Column 6 → 9 (Full House)
- Row 2 / Column 6 → 8 (Naked Single)
- Row 2 / Column 4 → 5 (Full House)
- Row 4 / Column 4 → 8 (Full House)
- Row 4 / Column 6 → 3 (Full House)
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