Solution for Medium Sudoku #12975126483101
7
3
6
5
9
8
4
2
1
5
9
4
1
2
7
3
6
8
8
1
2
4
3
6
5
7
9
6
8
4
3
1
7
9
5
2
9
1
5
4
8
2
7
3
6
7
2
3
6
9
5
1
8
4
1
4
5
2
6
3
8
7
9
2
7
9
8
5
1
6
4
3
3
6
8
9
4
7
2
5
1
This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Naked Pair, Locked Candidates Type 2 (Claiming), Naked Triple techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 3 / Column 9 → 9 (Hidden Single)
- Row 2 / Column 1 → 5 (Hidden Single)
- Row 6 / Column 2 → 5 (Hidden Single)
- Row 8 / Column 7 → 9 (Hidden Single)
- Row 6 / Column 7 → 1 (Hidden Single)
- Row 9 / Column 8 → 5 (Hidden Single)
- Row 2 / Column 9 → 6 (Hidden Single)
- Row 2 / Column 3 → 8 (Hidden Single)
- Row 9 / Column 3 → 9 (Naked Single)
- Row 1 / Column 7 → 8 (Hidden Single)
- Row 7 / Column 6 → 9 (Hidden Single)
- Row 7 / Column 1 → 1 (Hidden Single)
- Row 7 / Column 2 → 4 (Hidden Single)
- Row 1 / Column 2 → 3 (Naked Single)
- Row 3 / Column 1 → 4 (Full House)
- Locked Candidates Type 1 (Pointing): 3 in b3 => r4c8<>3
- Locked Candidates Type 1 (Pointing): 6 in b4 => r89c1<>6
- Row 9 / Column 1 → 8 (Naked Single)
- Locked Candidates Type 1 (Pointing): 7 in b9 => r46c9<>7
- Locked Candidates Type 1 (Pointing): 7 in b6 => r4c46<>7
- Naked Pair: 2,4 in r6c39 => r6c16<>2, r6c46<>4
- Naked Pair: 2,3 in r58c1 => r4c1<>2, r4c1<>3
- Naked Pair: 2,4 in r16c9 => r45c9<>2, r45c9<>4
- Locked Candidates Type 2 (Claiming): 4 in r5 => r4c46<>4
- Naked Pair: 6,9 in r4c14 => r4c6<>6
- Naked Triple: 6,7,9 in r469c4 => r238c4<>7, r38c4<>6
- Row 3 / Column 4 → 3 (Naked Single)
- Row 3 / Column 8 → 7 (Naked Single)
- Row 3 / Column 5 → 6 (Full House)
- Row 2 / Column 7 → 4 (Naked Single)
- Row 4 / Column 7 → 7 (Full House)
- Row 4 / Column 8 → 2 (Naked Single)
- Row 1 / Column 9 → 2 (Naked Single)
- Row 2 / Column 4 → 1 (Naked Single)
- Row 1 / Column 8 → 1 (Naked Single)
- Row 1 / Column 6 → 4 (Full House)
- Row 2 / Column 8 → 3 (Full House)
- Row 4 / Column 6 → 5 (Naked Single)
- Row 6 / Column 9 → 4 (Naked Single)
- Row 8 / Column 4 → 8 (Naked Single)
- Row 4 / Column 9 → 3 (Naked Single)
- Row 5 / Column 9 → 5 (Full House)
- Row 5 / Column 6 → 2 (Naked Single)
- Row 6 / Column 3 → 2 (Naked Single)
- Row 5 / Column 4 → 4 (Naked Single)
- Row 7 / Column 5 → 7 (Naked Single)
- Row 7 / Column 9 → 8 (Full House)
- Row 8 / Column 9 → 7 (Full House)
- Row 4 / Column 3 → 4 (Naked Single)
- Row 8 / Column 3 → 3 (Full House)
- Row 2 / Column 6 → 7 (Naked Single)
- Row 2 / Column 5 → 2 (Full House)
- Row 5 / Column 1 → 3 (Naked Single)
- Row 5 / Column 5 → 8 (Full House)
- Row 8 / Column 5 → 5 (Full House)
- Row 9 / Column 4 → 6 (Naked Single)
- Row 8 / Column 6 → 1 (Full House)
- Row 6 / Column 6 → 6 (Full House)
- Row 9 / Column 2 → 7 (Full House)
- Row 8 / Column 2 → 6 (Full House)
- Row 8 / Column 1 → 2 (Full House)
- Row 4 / Column 4 → 9 (Naked Single)
- Row 4 / Column 1 → 6 (Full House)
- Row 6 / Column 1 → 9 (Full House)
- Row 6 / Column 4 → 7 (Full House)
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