Solution for Medium Sudoku #12871925643103
8
2
4
9
2
9
6
5
3
9
1
7
2
4
4
3
2
5
7
6
2
1
5
3
This Sudoku Puzzle has 66 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Naked Single, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 5 / Column 9 → 2 (Hidden Single)
- Row 4 / Column 3 → 2 (Hidden Single)
- Row 8 / Column 5 → 2 (Hidden Single)
- Row 5 / Column 6 → 6 (Hidden Single)
- Row 7 / Column 4 → 9 (Hidden Single)
- Row 3 / Column 7 → 2 (Hidden Single)
- Row 4 / Column 2 → 4 (Hidden Single)
- Row 3 / Column 6 → 5 (Hidden Single)
- Row 5 / Column 4 → 5 (Hidden Single)
- Row 7 / Column 6 → 3 (Hidden Single)
- Row 9 / Column 5 → 4 (Hidden Single)
- Row 7 / Column 3 → 4 (Hidden Single)
- Row 8 / Column 8 → 4 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 3 in b1 => r6c3<>3
- Locked Candidates Type 1 (Pointing): 3 in b5 => r1c5<>3
- Locked Candidates Type 1 (Pointing): 8 in b5 => r2c5<>8
- Locked Candidates Type 1 (Pointing): 6 in b9 => r1246c7<>6
- Locked Candidates Type 1 (Pointing): 6 in b3 => r46c9<>6
- Naked Triple: 1,7,8 in r2c7,r3c89 => r1c7<>1, r1c79,r2c9<>7, r2c9<>8
- Row 1 / Column 7 → 9 (Naked Single)
- Row 8 / Column 1 → 9 (Hidden Single)
- Row 9 / Column 8 → 9 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 7 in b9 => r26c7<>7
- Locked Candidates Type 1 (Pointing): 7 in b3 => r3c3<>7
- Locked Candidates Type 1 (Pointing): 8 in b9 => r246c7<>8
- Row 2 / Column 7 → 1 (Naked Single)
- Row 2 / Column 5 → 7 (Naked Single)
- Row 1 / Column 5 → 1 (Naked Single)
- Row 2 / Column 4 → 8 (Hidden Single)
- Row 3 / Column 4 → 3 (Naked Single)
- Row 1 / Column 4 → 4 (Full House)
- Row 3 / Column 3 → 1 (Naked Single)
- Row 1 / Column 9 → 6 (Naked Single)
- Row 1 / Column 2 → 7 (Naked Single)
- Row 1 / Column 3 → 3 (Full House)
- Row 2 / Column 9 → 4 (Naked Single)
- Row 8 / Column 6 → 1 (Hidden Single)
- Row 9 / Column 6 → 8 (Full House)
- Row 9 / Column 7 → 7 (Naked Single)
- Row 9 / Column 3 → 5 (Naked Single)
- Row 9 / Column 1 → 1 (Full House)
- Row 2 / Column 3 → 6 (Naked Single)
- Row 2 / Column 2 → 5 (Full House)
- Row 8 / Column 3 → 8 (Naked Single)
- Row 6 / Column 3 → 7 (Full House)
- Row 8 / Column 7 → 6 (Full House)
- Row 7 / Column 7 → 8 (Full House)
- Row 7 / Column 2 → 6 (Naked Single)
- Row 7 / Column 1 → 7 (Full House)
- Row 5 / Column 1 → 3 (Naked Single)
- Row 5 / Column 5 → 8 (Naked Single)
- Row 5 / Column 2 → 1 (Naked Single)
- Row 5 / Column 8 → 7 (Full House)
- Row 6 / Column 2 → 8 (Full House)
- Row 3 / Column 8 → 8 (Naked Single)
- Row 3 / Column 9 → 7 (Full House)
- Row 6 / Column 9 → 9 (Naked Single)
- Row 4 / Column 9 → 8 (Full House)
- Row 4 / Column 8 → 6 (Naked Single)
- Row 6 / Column 8 → 1 (Full House)
- Row 6 / Column 5 → 3 (Naked Single)
- Row 4 / Column 5 → 9 (Full House)
- Row 4 / Column 1 → 5 (Naked Single)
- Row 4 / Column 7 → 3 (Full House)
- Row 6 / Column 7 → 5 (Full House)
- Row 6 / Column 1 → 6 (Full House)
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