9
5
4
1
5
5
2
9
6
9
4
7
8
2
4
7
5
9
6
2
3
8
5
4
6
3
6
1
This Sudoku Puzzle has 60 steps and it is solved using Locked Triple, Naked Single, Locked Candidates Type 1 (Pointing), Naked Pair, undefined, Skyscraper, Hidden Single, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Locked Triple: 1,3,6 in r456c3 => r37c3,r46c2,r5c1<>1, r3c3,r5c1<>3, r46c2<>6
- Row 5 / Column 1 → 8 (Naked Single)
- Row 5 / Column 7 → 6 (Naked Single)
- Locked Candidates Type 1 (Pointing): 2 in b4 => r23c2<>2
- Locked Candidates Type 1 (Pointing): 5 in b4 => r8c2<>5
- Locked Candidates Type 1 (Pointing): 2 in b6 => r7c7<>2
- Naked Pair: 1,3 in r5c39 => r5c4<>1, r5c46<>3
- X-Wing: 7 c37 r37 => r3c2568,r7c2458<>7
- Skyscraper: 7 in r8c5,r9c8 (connected by r2c58) => r9c46<>7
- Row 9 / Column 8 → 7 (Hidden Single)
- Row 3 / Column 7 → 7 (Hidden Single)
- Row 3 / Column 3 → 4 (Naked Single)
- Row 7 / Column 3 → 7 (Naked Single)
- Row 7 / Column 8 → 9 (Hidden Single)
- Row 7 / Column 2 → 1 (Naked Single)
- Row 3 / Column 2 → 8 (Naked Single)
- Row 8 / Column 1 → 5 (Naked Single)
- Row 8 / Column 2 → 9 (Naked Single)
- Row 9 / Column 1 → 4 (Full House)
- Row 8 / Column 9 → 8 (Naked Single)
- Row 7 / Column 7 → 4 (Naked Single)
- Row 8 / Column 6 → 7 (Naked Single)
- Row 8 / Column 5 → 1 (Full House)
- Row 4 / Column 7 → 2 (Naked Single)
- Row 6 / Column 7 → 8 (Full House)
- Row 7 / Column 9 → 2 (Naked Single)
- Row 9 / Column 9 → 5 (Full House)
- Row 5 / Column 6 → 9 (Naked Single)
- Row 4 / Column 2 → 5 (Naked Single)
- Row 7 / Column 4 → 3 (Naked Single)
- Row 7 / Column 5 → 8 (Full House)
- Row 5 / Column 4 → 7 (Naked Single)
- Row 9 / Column 6 → 2 (Naked Single)
- Row 9 / Column 4 → 9 (Full House)
- Row 4 / Column 5 → 3 (Naked Single)
- Row 6 / Column 2 → 2 (Naked Single)
- Row 1 / Column 4 → 6 (Naked Single)
- Row 3 / Column 6 → 3 (Naked Single)
- Row 2 / Column 5 → 7 (Naked Single)
- Row 3 / Column 5 → 9 (Naked Single)
- Row 6 / Column 5 → 5 (Full House)
- Row 4 / Column 6 → 6 (Naked Single)
- Row 6 / Column 4 → 1 (Full House)
- Row 2 / Column 4 → 2 (Full House)
- Row 1 / Column 6 → 8 (Full House)
- Row 1 / Column 2 → 7 (Naked Single)
- Row 2 / Column 2 → 6 (Full House)
- Row 3 / Column 8 → 1 (Naked Single)
- Row 3 / Column 1 → 2 (Full House)
- Row 4 / Column 3 → 1 (Naked Single)
- Row 4 / Column 8 → 4 (Full House)
- Row 6 / Column 8 → 3 (Naked Single)
- Row 2 / Column 8 → 8 (Full House)
- Row 5 / Column 9 → 1 (Full House)
- Row 5 / Column 3 → 3 (Full House)
- Row 6 / Column 3 → 6 (Full House)
- Row 2 / Column 1 → 3 (Naked Single)
- Row 1 / Column 1 → 1 (Full House)
- Row 1 / Column 9 → 3 (Full House)
- Row 2 / Column 9 → 4 (Full House)
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