1
5
7
6
4
2
3
8
9
9
2
8
3
7
5
6
1
4
4
6
3
9
8
1
5
2
7
8
6
4
7
2
5
9
1
3
2
9
1
4
6
3
8
5
7
3
7
5
8
1
9
2
4
6
2
3
1
4
7
6
5
9
8
7
8
9
5
3
2
1
4
6
6
5
4
1
9
8
7
3
2
This Sudoku Puzzle has 59 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Naked Triple, Empty Rectangle techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 5 → 7 (Hidden Single)
- Row 4 / Column 1 → 8 (Hidden Single)
- Row 8 / Column 9 → 8 (Hidden Single)
- Row 1 / Column 5 → 2 (Hidden Single)
- Row 2 / Column 7 → 9 (Hidden Single)
- Row 6 / Column 1 → 9 (Hidden Single)
- Row 6 / Column 7 → 2 (Hidden Single)
- Row 6 / Column 6 → 7 (Hidden Single)
- Row 5 / Column 2 → 2 (Hidden Single)
- Row 2 / Column 3 → 2 (Hidden Single)
- Row 7 / Column 4 → 7 (Hidden Single)
- Row 3 / Column 8 → 2 (Hidden Single)
- Row 5 / Column 1 → 7 (Hidden Single)
- Row 9 / Column 9 → 2 (Hidden Single)
- Row 8 / Column 3 → 6 (Hidden Single)
- Row 8 / Column 2 → 7 (Hidden Single)
- Row 7 / Column 3 → 1 (Hidden Single)
- Row 8 / Column 7 → 1 (Hidden Single)
- Row 1 / Column 7 → 4 (Naked Single)
- Row 4 / Column 7 → 3 (Full House)
- Row 4 / Column 3 → 4 (Naked Single)
- Row 6 / Column 3 → 3 (Full House)
- Row 5 / Column 6 → 3 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 4 in b2 => r3c12<>4
- Naked Triple: 3,4,9 in r7c6,r89c5 => r9c46<>4, r9c46<>9
- Row 1 / Column 4 → 9 (Hidden Single)
- Empty Rectangle: 4 in b8 (r67c9) => r6c5<>4
- Row 6 / Column 5 → 5 (Naked Single)
- Row 4 / Column 5 → 9 (Naked Single)
- Row 4 / Column 6 → 1 (Naked Single)
- Row 4 / Column 9 → 5 (Full House)
- Row 5 / Column 4 → 4 (Full House)
- Row 5 / Column 8 → 1 (Full House)
- Row 9 / Column 6 → 6 (Naked Single)
- Row 7 / Column 9 → 4 (Naked Single)
- Row 3 / Column 4 → 6 (Naked Single)
- Row 9 / Column 4 → 1 (Full House)
- Row 1 / Column 6 → 8 (Naked Single)
- Row 3 / Column 6 → 4 (Full House)
- Row 7 / Column 6 → 9 (Full House)
- Row 6 / Column 9 → 6 (Naked Single)
- Row 2 / Column 9 → 1 (Full House)
- Row 6 / Column 8 → 4 (Full House)
- Row 3 / Column 1 → 3 (Naked Single)
- Row 3 / Column 2 → 8 (Full House)
- Row 1 / Column 2 → 5 (Naked Single)
- Row 1 / Column 8 → 6 (Naked Single)
- Row 1 / Column 1 → 1 (Full House)
- Row 2 / Column 8 → 8 (Full House)
- Row 8 / Column 1 → 4 (Naked Single)
- Row 8 / Column 5 → 3 (Full House)
- Row 9 / Column 5 → 4 (Full House)
- Row 2 / Column 2 → 4 (Naked Single)
- Row 2 / Column 1 → 6 (Full House)
- Row 9 / Column 1 → 5 (Full House)
- Row 7 / Column 2 → 3 (Naked Single)
- Row 7 / Column 8 → 5 (Full House)
- Row 9 / Column 8 → 3 (Full House)
- Row 9 / Column 2 → 9 (Full House)
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