9
4
8
9
1
7
5
8
6
2
8
3
6
8
2
4
2
5
2
8
7
5
9
3
This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Full House, Naked Single, Naked Pair, Skyscraper techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 3 / Column 8 → 9 (Hidden Single)
- Row 6 / Column 9 → 8 (Hidden Single)
- Row 2 / Column 2 → 8 (Hidden Single)
- Row 3 / Column 6 → 2 (Hidden Single)
- Row 8 / Column 5 → 2 (Hidden Single)
- Row 5 / Column 6 → 5 (Hidden Single)
- Row 3 / Column 4 → 5 (Hidden Single)
- Row 2 / Column 5 → 6 (Hidden Single)
- Row 6 / Column 6 → 9 (Hidden Single)
- Row 9 / Column 2 → 5 (Hidden Single)
- Row 5 / Column 4 → 7 (Hidden Single)
- Row 8 / Column 7 → 5 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 3 in b2 => r1c278<>3
- Row 3 / Column 2 → 3 (Hidden Single)
- Row 3 / Column 1 → 1 (Full House)
- Row 1 / Column 2 → 6 (Naked Single)
- Row 2 / Column 8 → 3 (Hidden Single)
- Row 5 / Column 8 → 6 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 4 in b2 => r1c7<>4
- Naked Pair: 5,7 in r24c1 => r6c1<>7
- Skyscraper: 9 in r5c9,r7c7 (connected by r57c2) => r4c7,r8c9<>9
- Row 7 / Column 7 → 9 (Hidden Single)
- Row 8 / Column 3 → 9 (Hidden Single)
- Row 5 / Column 2 → 9 (Hidden Single)
- Row 5 / Column 9 → 1 (Naked Single)
- Row 5 / Column 5 → 4 (Full House)
- Row 8 / Column 9 → 4 (Naked Single)
- Row 7 / Column 6 → 6 (Hidden Single)
- Row 8 / Column 6 → 3 (Naked Single)
- Row 1 / Column 6 → 4 (Naked Single)
- Row 1 / Column 4 → 3 (Full House)
- Row 9 / Column 6 → 7 (Full House)
- Row 8 / Column 1 → 6 (Naked Single)
- Row 9 / Column 9 → 2 (Naked Single)
- Row 6 / Column 1 → 4 (Naked Single)
- Row 9 / Column 3 → 1 (Naked Single)
- Row 2 / Column 9 → 7 (Naked Single)
- Row 4 / Column 9 → 9 (Full House)
- Row 6 / Column 2 → 1 (Naked Single)
- Row 7 / Column 2 → 4 (Full House)
- Row 9 / Column 1 → 3 (Full House)
- Row 9 / Column 7 → 6 (Naked Single)
- Row 9 / Column 8 → 8 (Naked Single)
- Row 9 / Column 4 → 4 (Full House)
- Row 1 / Column 7 → 1 (Naked Single)
- Row 2 / Column 1 → 5 (Naked Single)
- Row 4 / Column 1 → 7 (Full House)
- Row 2 / Column 7 → 4 (Naked Single)
- Row 1 / Column 8 → 2 (Full House)
- Row 2 / Column 3 → 2 (Full House)
- Row 1 / Column 3 → 7 (Full House)
- Row 6 / Column 5 → 3 (Naked Single)
- Row 4 / Column 5 → 1 (Full House)
- Row 7 / Column 4 → 1 (Naked Single)
- Row 7 / Column 8 → 7 (Full House)
- Row 8 / Column 8 → 1 (Full House)
- Row 8 / Column 4 → 8 (Full House)
- Row 4 / Column 3 → 5 (Naked Single)
- Row 4 / Column 7 → 3 (Full House)
- Row 6 / Column 3 → 6 (Full House)
- Row 6 / Column 7 → 7 (Full House)
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