9
1
4
8
2
1
6
3
3
2
8
1
3
6
1
5
3
4
1
9
2
6
3
8
5
6
1
4
3
2
This Sudoku Puzzle has 59 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Single, Skyscraper, Locked Candidates Type 2 (Claiming), Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 6 → 9 (Hidden Single)
- Row 5 / Column 5 → 3 (Hidden Single)
- Row 2 / Column 1 → 3 (Hidden Single)
- Row 8 / Column 6 → 3 (Hidden Single)
- Row 8 / Column 2 → 1 (Hidden Single)
- Row 9 / Column 5 → 8 (Hidden Single)
- Row 8 / Column 1 → 2 (Hidden Single)
- Row 4 / Column 2 → 6 (Hidden Single)
- Row 1 / Column 6 → 8 (Hidden Single)
- Row 3 / Column 3 → 2 (Hidden Single)
- Row 8 / Column 8 → 6 (Hidden Single)
- Row 6 / Column 2 → 2 (Hidden Single)
- Row 4 / Column 4 → 8 (Hidden Single)
- Row 3 / Column 6 → 5 (Hidden Single)
- Row 7 / Column 3 → 6 (Hidden Single)
- Row 5 / Column 1 → 8 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 4 in b2 => r7c5<>4
- Locked Candidates Type 1 (Pointing): 7 in b2 => r47c5<>7
- Locked Candidates Type 1 (Pointing): 5 in b3 => r7c8<>5
- Locked Candidates Type 1 (Pointing): 7 in b6 => r6c146<>7
- Row 6 / Column 6 → 4 (Naked Single)
- Row 5 / Column 2 → 4 (Hidden Single)
- Row 7 / Column 4 → 4 (Hidden Single)
- Row 9 / Column 1 → 4 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 7 in b4 => r9c3<>7
- Skyscraper: 7 in r2c8,r9c9 (connected by r29c2) => r3c9,r7c8<>7
- Locked Candidates Type 2 (Claiming): 7 in c9 => r7c7<>7
- Skyscraper: 9 in r7c1,r8c4 (connected by r6c14) => r7c5<>9
- Row 7 / Column 5 → 2 (Naked Single)
- Row 4 / Column 5 → 9 (Naked Single)
- Row 7 / Column 6 → 7 (Naked Single)
- Row 4 / Column 6 → 2 (Full House)
- Row 4 / Column 3 → 7 (Full House)
- Row 8 / Column 4 → 9 (Full House)
- Row 8 / Column 9 → 7 (Full House)
- Row 6 / Column 4 → 5 (Naked Single)
- Row 5 / Column 4 → 7 (Full House)
- Row 5 / Column 3 → 5 (Full House)
- Row 6 / Column 1 → 9 (Full House)
- Row 9 / Column 3 → 9 (Full House)
- Row 7 / Column 1 → 5 (Naked Single)
- Row 9 / Column 2 → 7 (Full House)
- Row 9 / Column 9 → 5 (Full House)
- Row 2 / Column 2 → 5 (Full House)
- Row 2 / Column 8 → 7 (Full House)
- Row 1 / Column 7 → 6 (Naked Single)
- Row 6 / Column 8 → 8 (Naked Single)
- Row 6 / Column 7 → 7 (Full House)
- Row 1 / Column 1 → 7 (Naked Single)
- Row 3 / Column 1 → 6 (Full House)
- Row 3 / Column 7 → 9 (Naked Single)
- Row 7 / Column 7 → 8 (Full House)
- Row 7 / Column 8 → 1 (Naked Single)
- Row 7 / Column 9 → 9 (Full House)
- Row 3 / Column 9 → 1 (Full House)
- Row 1 / Column 5 → 4 (Naked Single)
- Row 1 / Column 8 → 5 (Full House)
- Row 3 / Column 8 → 4 (Full House)
- Row 3 / Column 5 → 7 (Full House)
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