3
2
4
6
1
6
8
4
6
8
2
4
8
9
3
4
5
2
9
5
2
6
8
1
3
This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Naked Single, Skyscraper, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 8 / Column 9 → 2 (Hidden Single)
- Row 2 / Column 7 → 5 (Hidden Single)
- Row 9 / Column 9 → 5 (Hidden Single)
- Row 4 / Column 5 → 5 (Hidden Single)
- Row 5 / Column 1 → 5 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 1 in b3 => r46c9<>1
- Locked Candidates Type 2 (Claiming): 4 in c4 => r7c56,r8c56,r9c6<>4
- Row 8 / Column 3 → 4 (Hidden Single)
- Naked Triple: 4,7,9 in r179c8 => r345c8<>7, r34c8<>9
- Row 3 / Column 8 → 3 (Naked Single)
- Row 4 / Column 9 → 3 (Hidden Single)
- Naked Triple: 1,7,9 in r2c139 => r2c56<>7, r2c6<>9
- Skyscraper: 9 in r2c9,r4c7 (connected by r24c3) => r6c9<>9
- Row 6 / Column 9 → 7 (Naked Single)
- Row 1 / Column 8 → 7 (Hidden Single)
- Row 9 / Column 8 → 4 (Naked Single)
- Row 7 / Column 8 → 9 (Naked Single)
- Row 8 / Column 7 → 7 (Full House)
- Row 7 / Column 4 → 4 (Hidden Single)
- Row 8 / Column 6 → 9 (Hidden Single)
- Row 7 / Column 5 → 7 (Hidden Single)
- Row 9 / Column 4 → 1 (Naked Single)
- Row 7 / Column 6 → 3 (Naked Single)
- Row 2 / Column 6 → 4 (Naked Single)
- Row 8 / Column 5 → 6 (Naked Single)
- Row 9 / Column 6 → 8 (Full House)
- Row 2 / Column 5 → 3 (Naked Single)
- Row 6 / Column 5 → 4 (Full House)
- Row 8 / Column 1 → 8 (Naked Single)
- Row 8 / Column 2 → 3 (Full House)
- Row 9 / Column 3 → 7 (Naked Single)
- Row 9 / Column 2 → 6 (Full House)
- Row 5 / Column 3 → 3 (Hidden Single)
- Row 2 / Column 1 → 7 (Hidden Single)
- Row 5 / Column 2 → 7 (Hidden Single)
- Row 5 / Column 4 → 2 (Naked Single)
- Row 1 / Column 4 → 9 (Naked Single)
- Row 3 / Column 4 → 7 (Full House)
- Row 5 / Column 8 → 6 (Naked Single)
- Row 4 / Column 8 → 2 (Full House)
- Row 3 / Column 6 → 5 (Naked Single)
- Row 1 / Column 6 → 2 (Full House)
- Row 5 / Column 6 → 1 (Naked Single)
- Row 5 / Column 7 → 8 (Full House)
- Row 6 / Column 6 → 6 (Naked Single)
- Row 4 / Column 6 → 7 (Full House)
- Row 6 / Column 1 → 1 (Naked Single)
- Row 4 / Column 1 → 6 (Full House)
- Row 4 / Column 3 → 9 (Naked Single)
- Row 4 / Column 7 → 1 (Full House)
- Row 6 / Column 7 → 9 (Full House)
- Row 2 / Column 3 → 1 (Naked Single)
- Row 2 / Column 9 → 9 (Full House)
- Row 3 / Column 9 → 1 (Full House)
- Row 3 / Column 2 → 9 (Full House)
- Row 6 / Column 2 → 8 (Naked Single)
- Row 6 / Column 3 → 2 (Full House)
- Row 7 / Column 3 → 5 (Naked Single)
- Row 1 / Column 3 → 8 (Full House)
- Row 1 / Column 2 → 5 (Full House)
- Row 7 / Column 2 → 1 (Full House)
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