8
7
4
1
3
2
9
5
6
9
5
1
8
6
7
4
3
2
3
2
6
9
5
4
7
8
1
5
1
7
2
4
3
6
8
9
6
2
8
1
9
5
7
4
3
4
9
3
8
6
7
2
1
5
7
2
1
3
9
5
4
6
8
5
8
4
2
7
6
3
1
9
6
3
9
1
4
8
5
7
2
This Sudoku Puzzle has 63 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Hidden Pair, Naked Single, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Hidden Pair
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 5 / Column 5 → 9 (Hidden Single)
- Row 4 / Column 3 → 7 (Hidden Single)
- Row 4 / Column 6 → 8 (Hidden Single)
- Row 2 / Column 2 → 3 (Hidden Single)
- Row 3 / Column 7 → 7 (Hidden Single)
- Row 8 / Column 8 → 4 (Hidden Single)
- Row 6 / Column 5 → 4 (Hidden Single)
- Row 5 / Column 9 → 7 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 8 in b1 => r9c1<>8
- Locked Candidates Type 1 (Pointing): 1 in b6 => r6c1<>1
- Locked Candidates Type 1 (Pointing): 3 in b8 => r9c9<>3
- Locked Candidates Type 1 (Pointing): 8 in b9 => r1c9<>8
- Locked Candidates Type 2 (Claiming): 9 in r3 => r12c1<>9
- Hidden Pair: 4,6 in r9c12 => r9c12<>1, r9c12<>2, r9c12<>9
- Row 3 / Column 1 → 9 (Hidden Single)
- Row 3 / Column 2 → 5 (Naked Single)
- Row 3 / Column 8 → 8 (Full House)
- Row 1 / Column 1 → 8 (Hidden Single)
- Row 8 / Column 3 → 5 (Hidden Single)
- Row 8 / Column 9 → 8 (Hidden Single)
- Row 9 / Column 3 → 8 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 1 in b1 => r2c56<>1
- Locked Candidates Type 1 (Pointing): 2 in b1 => r2c78<>2
- Row 2 / Column 7 → 9 (Naked Single)
- Row 2 / Column 6 → 7 (Naked Single)
- Row 6 / Column 6 → 3 (Naked Single)
- Row 8 / Column 5 → 7 (Hidden Single)
- Row 6 / Column 4 → 7 (Hidden Single)
- Row 4 / Column 9 → 3 (Hidden Single)
- Row 9 / Column 4 → 3 (Hidden Single)
- Row 1 / Column 7 → 3 (Hidden Single)
- Row 7 / Column 8 → 3 (Hidden Single)
- Row 4 / Column 1 → 5 (Hidden Single)
- Row 6 / Column 8 → 1 (Hidden Single)
- Row 6 / Column 7 → 2 (Naked Single)
- Row 8 / Column 7 → 1 (Full House)
- Row 5 / Column 8 → 6 (Naked Single)
- Row 6 / Column 9 → 5 (Full House)
- Row 6 / Column 1 → 6 (Full House)
- Row 2 / Column 8 → 5 (Naked Single)
- Row 1 / Column 8 → 2 (Full House)
- Row 1 / Column 9 → 6 (Full House)
- Row 9 / Column 1 → 4 (Naked Single)
- Row 2 / Column 5 → 6 (Naked Single)
- Row 1 / Column 4 → 9 (Naked Single)
- Row 5 / Column 1 → 2 (Naked Single)
- Row 2 / Column 1 → 1 (Full House)
- Row 5 / Column 2 → 4 (Full House)
- Row 4 / Column 2 → 1 (Full House)
- Row 2 / Column 3 → 2 (Full House)
- Row 7 / Column 3 → 1 (Full House)
- Row 9 / Column 2 → 6 (Naked Single)
- Row 4 / Column 5 → 2 (Naked Single)
- Row 4 / Column 4 → 6 (Full House)
- Row 8 / Column 4 → 2 (Full House)
- Row 8 / Column 2 → 9 (Full House)
- Row 7 / Column 2 → 2 (Full House)
- Row 7 / Column 9 → 9 (Full House)
- Row 9 / Column 9 → 2 (Full House)
- Row 1 / Column 6 → 1 (Naked Single)
- Row 1 / Column 5 → 5 (Full House)
- Row 9 / Column 5 → 1 (Full House)
- Row 9 / Column 6 → 9 (Full House)
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