1
9
6
7
4
1
3
7
5
1
4
3
9
7
9
1
3
2
6
2
9
5
2
8
6
6
2
7
This Sudoku Puzzle has 55 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Naked Pair, Naked Triple, Full House, Give Up techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 9 / Column 6 → 1 (Naked Single)
- Row 2 / Column 9 → 9 (Hidden Single)
- Row 4 / Column 2 → 1 (Hidden Single)
- Row 2 / Column 5 → 5 (Hidden Single)
- Row 7 / Column 7 → 9 (Hidden Single)
- Row 8 / Column 8 → 5 (Hidden Single)
- Row 6 / Column 4 → 1 (Hidden Single)
- Row 7 / Column 3 → 1 (Hidden Single)
- Row 8 / Column 9 → 1 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 8 in b2 => r45c4<>8
- Locked Candidates Type 1 (Pointing): 3 in b3 => r7c8<>3
- Locked Candidates Type 1 (Pointing): 6 in b4 => r5c59<>6
- Naked Pair: 5,8 in r6c16 => r6c8<>8
- Naked Triple: 2,5,8 in r246c1 => r3c1<>2, r3c1<>5, r3c1<>8
- Row 3 / Column 2 → 5 (Hidden Single)
- Row 9 / Column 3 → 5 (Hidden Single)
- Row 3 / Column 1 → 7 (Hidden Single)
- Row 8 / Column 1 → 4 (Naked Single)
- Row 1 / Column 2 → 4 (Hidden Single)
- Row 5 / Column 4 → 4 (Hidden Single)
- Row 6 / Column 5 → 6 (Naked Single)
- Row 6 / Column 8 → 4 (Naked Single)
- Row 7 / Column 8 → 8 (Naked Single)
- Row 3 / Column 7 → 4 (Hidden Single)
- Row 4 / Column 9 → 6 (Hidden Single)
- Row 3 / Column 9 → 8 (Naked Single)
- Row 3 / Column 4 → 2 (Naked Single)
- Row 3 / Column 8 → 6 (Full House)
- Row 5 / Column 9 → 7 (Naked Single)
- Row 1 / Column 5 → 9 (Naked Single)
- Row 1 / Column 4 → 8 (Full House)
- Row 4 / Column 4 → 3 (Naked Single)
- Row 8 / Column 4 → 9 (Full House)
- Row 5 / Column 5 → 2 (Naked Single)
- Row 1 / Column 3 → 3 (Naked Single)
- Row 1 / Column 8 → 2 (Full House)
- Row 2 / Column 8 → 3 (Full House)
- Row 8 / Column 6 → 7 (Naked Single)
- Row 8 / Column 2 → 3 (Full House)
- Row 4 / Column 5 → 7 (Naked Single)
- Row 7 / Column 2 → 7 (Naked Single)
- Row 9 / Column 2 → 8 (Full House)
- Row 5 / Column 2 → 6 (Naked Single)
- Row 2 / Column 2 → 2 (Full House)
- Row 5 / Column 3 → 8 (Naked Single)
- Row 2 / Column 3 → 6 (Full House)
- Row 2 / Column 1 → 8 (Full House)
- Row 5 / Column 7 → 5 (Naked Single)
- Row 4 / Column 7 → 8 (Full House)
- Row 5 / Column 6 → 9 (Full House)
- Row 6 / Column 1 → 5 (Naked Single)
- Row 4 / Column 1 → 2 (Full House)
- Row 4 / Column 6 → 5 (Full House)
- Row 6 / Column 6 → 8 (Full House)
- Give Up: Don't know how to proceed!
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