8
6
1
9
4
3
7
5
2
4
5
7
6
8
2
3
1
9
3
9
2
5
1
7
8
6
4
5
1
7
3
9
6
2
8
4
8
9
3
2
4
5
7
6
1
4
2
6
1
7
8
9
3
5
6
7
5
1
2
9
4
3
8
1
3
8
5
7
4
9
2
6
2
4
9
6
8
3
7
5
1
This Sudoku Puzzle has 64 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, undefined, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 5 / Column 7 → 1 (Naked Single)
- Row 3 / Column 2 → 5 (Hidden Single)
- Row 5 / Column 4 → 2 (Hidden Single)
- Row 4 / Column 8 → 2 (Hidden Single)
- Row 1 / Column 9 → 2 (Hidden Single)
- Row 8 / Column 2 → 2 (Hidden Single)
- Row 9 / Column 4 → 9 (Hidden Single)
- Row 4 / Column 5 → 9 (Hidden Single)
- Row 6 / Column 9 → 5 (Hidden Single)
- Row 9 / Column 2 → 3 (Hidden Single)
- Row 7 / Column 2 → 7 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 6 in b4 => r79c3<>6
- Locked Candidates Type 1 (Pointing): 4 in b8 => r1c6<>4
- Locked Candidates Type 1 (Pointing): 8 in b8 => r146c6<>8
- Locked Candidates Type 1 (Pointing): 1 in b9 => r2c9<>1
- Locked Candidates Type 2 (Claiming): 1 in c2 => r4c1,r6c3<>1
- Locked Candidates Type 2 (Claiming): 8 in c2 => r4c1,r6c3<>8
- Naked Triple: 3,4,6 in r367c8 => r12c8<>3, r1c8<>4, r2c8<>6
- Locked Candidates Type 1 (Pointing): 6 in b3 => r3c4<>6
- W-Wing: 7/3 in r1c6,r2c9 connected by 3 in r12c3 => r1c7,r2c45<>7
- Row 2 / Column 9 → 7 (Hidden Single)
- W-Wing: 4/3 in r3c9,r4c7 connected by 3 in r8c79 => r13c7<>4
- Row 1 / Column 4 → 4 (Hidden Single)
- Row 1 / Column 6 → 7 (Hidden Single)
- Row 6 / Column 4 → 7 (Hidden Single)
- Row 9 / Column 7 → 7 (Hidden Single)
- Row 8 / Column 5 → 7 (Hidden Single)
- Row 2 / Column 4 → 6 (Hidden Single)
- Row 2 / Column 5 → 8 (Naked Single)
- Row 3 / Column 4 → 3 (Full House)
- Row 6 / Column 5 → 6 (Full House)
- Row 4 / Column 4 → 8 (Full House)
- Row 3 / Column 9 → 4 (Naked Single)
- Row 5 / Column 6 → 5 (Naked Single)
- Row 5 / Column 3 → 6 (Full House)
- Row 6 / Column 3 → 4 (Naked Single)
- Row 4 / Column 2 → 1 (Naked Single)
- Row 6 / Column 2 → 8 (Full House)
- Row 4 / Column 1 → 5 (Full House)
- Row 3 / Column 8 → 6 (Naked Single)
- Row 3 / Column 7 → 8 (Full House)
- Row 9 / Column 9 → 1 (Naked Single)
- Row 8 / Column 9 → 3 (Full House)
- Row 6 / Column 8 → 3 (Naked Single)
- Row 4 / Column 7 → 4 (Full House)
- Row 4 / Column 6 → 3 (Full House)
- Row 6 / Column 6 → 1 (Full House)
- Row 7 / Column 8 → 4 (Naked Single)
- Row 8 / Column 7 → 6 (Full House)
- Row 1 / Column 7 → 3 (Full House)
- Row 9 / Column 3 → 8 (Naked Single)
- Row 8 / Column 6 → 4 (Naked Single)
- Row 8 / Column 1 → 1 (Full House)
- Row 1 / Column 3 → 1 (Naked Single)
- Row 7 / Column 1 → 6 (Naked Single)
- Row 7 / Column 3 → 5 (Naked Single)
- Row 2 / Column 3 → 3 (Full House)
- Row 7 / Column 6 → 8 (Full House)
- Row 9 / Column 6 → 6 (Full House)
- Row 9 / Column 1 → 4 (Full House)
- Row 2 / Column 1 → 9 (Naked Single)
- Row 1 / Column 1 → 8 (Full House)
- Row 1 / Column 8 → 9 (Full House)
- Row 2 / Column 8 → 1 (Full House)
Show More...