1
6
9
7
9
6
7
8
6
2
6
7
4
3
4
6
5
2
9
7
5
2
4
6
9
8
6
4
8
9
6
6
3
4
8
This Sudoku Puzzle has 54 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Naked Single, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 8 / Column 8 → 9 (Hidden Single)
- Row 3 / Column 7 → 9 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 8 in b1 => r3c6<>8
- Locked Candidates Type 1 (Pointing): 1 in b5 => r5c2<>1
- Locked Candidates Type 1 (Pointing): 8 in b5 => r5c1<>8
- Locked Candidates Type 1 (Pointing): 2 in b9 => r7c1246<>2
- Locked Candidates Type 1 (Pointing): 2 in b7 => r9c46<>2
- Naked Triple: 1,3,5 in r7c2,r89c3 => r7c1<>3, r79c1,r9c2<>5, r9c2<>1
- Row 7 / Column 1 → 7 (Naked Single)
- Row 1 / Column 8 → 7 (Hidden Single)
- Row 8 / Column 9 → 7 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 1 in b9 => r7c246<>1
- Row 4 / Column 2 → 1 (Hidden Single)
- Row 4 / Column 3 → 8 (Naked Single)
- Row 4 / Column 1 → 9 (Full House)
- Row 9 / Column 1 → 2 (Naked Single)
- Row 9 / Column 2 → 9 (Naked Single)
- Row 3 / Column 1 → 8 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b9 => r7c26<>5
- Row 7 / Column 2 → 3 (Naked Single)
- Row 5 / Column 2 → 5 (Naked Single)
- Row 5 / Column 1 → 3 (Full House)
- Row 2 / Column 1 → 5 (Full House)
- Row 3 / Column 3 → 3 (Naked Single)
- Row 6 / Column 8 → 3 (Hidden Single)
- Row 6 / Column 9 → 1 (Full House)
- Row 7 / Column 9 → 5 (Naked Single)
- Row 3 / Column 9 → 4 (Naked Single)
- Row 1 / Column 9 → 3 (Full House)
- Row 3 / Column 2 → 2 (Naked Single)
- Row 2 / Column 2 → 4 (Full House)
- Row 3 / Column 8 → 1 (Naked Single)
- Row 3 / Column 6 → 5 (Full House)
- Row 7 / Column 8 → 2 (Full House)
- Row 7 / Column 7 → 1 (Full House)
- Row 2 / Column 7 → 2 (Naked Single)
- Row 1 / Column 7 → 5 (Full House)
- Row 1 / Column 5 → 8 (Naked Single)
- Row 5 / Column 5 → 1 (Naked Single)
- Row 2 / Column 5 → 3 (Naked Single)
- Row 2 / Column 6 → 1 (Full House)
- Row 8 / Column 5 → 5 (Full House)
- Row 9 / Column 6 → 7 (Naked Single)
- Row 8 / Column 3 → 1 (Naked Single)
- Row 9 / Column 3 → 5 (Full House)
- Row 9 / Column 4 → 1 (Full House)
- Row 5 / Column 6 → 8 (Naked Single)
- Row 5 / Column 4 → 7 (Full House)
- Row 8 / Column 4 → 2 (Naked Single)
- Row 8 / Column 6 → 3 (Full House)
- Row 7 / Column 6 → 4 (Naked Single)
- Row 1 / Column 6 → 2 (Full House)
- Row 1 / Column 4 → 4 (Full House)
- Row 7 / Column 4 → 8 (Full House)
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