3
2
7
6
8
9
1
7
4
8
6
3
9
8
2
9
5
7
6
4
7
9
3
6
5
6
2
9
7
This Sudoku Puzzle has 59 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Locked Candidates Type 2 (Claiming), Naked Single, Naked Pair, Locked Pair, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 1 / Column 8 → 6 (Hidden Single)
- Row 9 / Column 2 → 6 (Hidden Single)
- Row 9 / Column 5 → 8 (Hidden Single)
- Row 7 / Column 6 → 9 (Hidden Single)
- Row 8 / Column 1 → 3 (Hidden Single)
- Row 7 / Column 4 → 7 (Hidden Single)
- Row 6 / Column 1 → 2 (Hidden Single)
- Row 2 / Column 6 → 7 (Hidden Single)
- Row 2 / Column 4 → 6 (Hidden Single)
- Row 5 / Column 6 → 6 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 3 in b2 => r3c89<>3
- Naked Triple: 1,3,4 in r8c7,r9c89 => r7c8,r8c9<>1, r8c9<>4
- Locked Candidates Type 2 (Claiming): 1 in r7 => r89c3<>1
- Row 9 / Column 3 → 2 (Naked Single)
- Naked Pair: 1,4 in r59c4 => r348c4<>4, r48c4<>1
- Row 8 / Column 4 → 2 (Naked Single)
- Naked Triple: 1,3,4 in r268c7 => r14c7<>1, r4c7<>3, r4c7<>4
- Locked Candidates Type 1 (Pointing): 1 in b3 => r2c13<>1
- Locked Pair: 5,8 in r2c13 => r1c12,r2c9,r3c2<>5
- Row 1 / Column 5 → 5 (Hidden Single)
- Row 3 / Column 4 → 3 (Naked Single)
- Row 4 / Column 4 → 5 (Naked Single)
- Row 6 / Column 6 → 3 (Hidden Single)
- Row 2 / Column 7 → 3 (Hidden Single)
- Row 2 / Column 9 → 1 (Naked Single)
- Row 8 / Column 6 → 1 (Hidden Single)
- Row 9 / Column 4 → 4 (Full House)
- Row 5 / Column 4 → 1 (Full House)
- Row 8 / Column 7 → 4 (Naked Single)
- Row 9 / Column 9 → 3 (Naked Single)
- Row 9 / Column 8 → 1 (Full House)
- Row 6 / Column 7 → 1 (Naked Single)
- Row 6 / Column 8 → 8 (Naked Single)
- Row 5 / Column 9 → 4 (Naked Single)
- Row 5 / Column 1 → 8 (Full House)
- Row 7 / Column 8 → 5 (Naked Single)
- Row 8 / Column 9 → 8 (Full House)
- Row 8 / Column 3 → 5 (Full House)
- Row 4 / Column 9 → 9 (Naked Single)
- Row 3 / Column 9 → 5 (Full House)
- Row 2 / Column 1 → 5 (Naked Single)
- Row 2 / Column 3 → 8 (Full House)
- Row 3 / Column 8 → 2 (Naked Single)
- Row 1 / Column 7 → 9 (Full House)
- Row 4 / Column 7 → 2 (Full House)
- Row 4 / Column 8 → 3 (Full House)
- Row 7 / Column 1 → 1 (Naked Single)
- Row 1 / Column 1 → 4 (Full House)
- Row 7 / Column 2 → 8 (Full House)
- Row 6 / Column 3 → 7 (Naked Single)
- Row 4 / Column 3 → 1 (Full House)
- Row 3 / Column 6 → 4 (Naked Single)
- Row 1 / Column 6 → 2 (Full House)
- Row 1 / Column 2 → 1 (Full House)
- Row 3 / Column 2 → 9 (Full House)
- Row 6 / Column 5 → 4 (Naked Single)
- Row 4 / Column 5 → 7 (Full House)
- Row 4 / Column 2 → 4 (Full House)
- Row 6 / Column 2 → 5 (Full House)
Show More...