Solution for Medium Sudoku #13813654972102
2
6
9
5
4
8
3
1
7
8
7
3
6
1
9
2
4
5
4
5
1
2
7
3
8
9
6
9
2
3
1
8
4
6
7
5
1
6
8
5
3
7
9
2
4
5
4
7
6
2
9
1
3
8
8
3
2
7
5
6
4
9
1
7
5
6
4
9
1
3
8
2
9
1
4
3
8
2
7
6
5
This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Naked Single, Locked Candidates Type 2 (Claiming), Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 3 → 8 (Hidden Single)
- Row 8 / Column 1 → 7 (Hidden Single)
- Row 2 / Column 8 → 7 (Hidden Single)
- Row 3 / Column 8 → 9 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 2 in b1 => r9c1<>2
- Locked Candidates Type 1 (Pointing): 5 in b4 => r789c3<>5
- Locked Candidates Type 1 (Pointing): 9 in b4 => r9c1<>9
- Naked Triple: 1,5,7 in r45c4,r5c6 => r46c5<>1, r46c5,r6c6<>5
- Row 4 / Column 5 → 6 (Naked Single)
- Row 2 / Column 5 → 1 (Hidden Single)
- Row 2 / Column 6 → 9 (Hidden Single)
- Row 8 / Column 5 → 9 (Hidden Single)
- Row 9 / Column 2 → 9 (Hidden Single)
- Row 2 / Column 7 → 2 (Hidden Single)
- Naked Triple: 1,5,8 in r46c7,r6c9 => r45c9<>1, r45c9<>5
- Locked Candidates Type 2 (Claiming): 5 in r5 => r4c4<>5
- Naked Triple: 3,4,5 in r279c9 => r1c9<>4, r16c9<>5
- Locked Candidates Type 1 (Pointing): 5 in b6 => r138c7<>5
- Row 1 / Column 8 → 5 (Hidden Single)
- Row 9 / Column 8 → 6 (Naked Single)
- Row 8 / Column 8 → 8 (Full House)
- Row 7 / Column 6 → 6 (Hidden Single)
- Row 7 / Column 4 → 7 (Hidden Single)
- Row 4 / Column 4 → 1 (Naked Single)
- Row 4 / Column 7 → 5 (Naked Single)
- Row 5 / Column 4 → 5 (Naked Single)
- Row 4 / Column 3 → 3 (Naked Single)
- Row 5 / Column 6 → 7 (Naked Single)
- Row 8 / Column 4 → 4 (Naked Single)
- Row 4 / Column 1 → 9 (Naked Single)
- Row 4 / Column 9 → 7 (Full House)
- Row 7 / Column 3 → 2 (Naked Single)
- Row 8 / Column 3 → 6 (Naked Single)
- Row 5 / Column 9 → 9 (Naked Single)
- Row 5 / Column 1 → 1 (Full House)
- Row 8 / Column 7 → 3 (Naked Single)
- Row 8 / Column 2 → 5 (Full House)
- Row 7 / Column 5 → 5 (Naked Single)
- Row 9 / Column 6 → 2 (Full House)
- Row 9 / Column 3 → 1 (Naked Single)
- Row 6 / Column 3 → 5 (Full House)
- Row 6 / Column 1 → 6 (Full House)
- Row 9 / Column 1 → 4 (Naked Single)
- Row 7 / Column 2 → 3 (Full House)
- Row 7 / Column 9 → 4 (Full House)
- Row 9 / Column 9 → 5 (Full House)
- Row 6 / Column 6 → 4 (Naked Single)
- Row 3 / Column 6 → 5 (Full House)
- Row 6 / Column 5 → 2 (Full House)
- Row 3 / Column 5 → 4 (Full House)
- Row 1 / Column 1 → 2 (Naked Single)
- Row 3 / Column 1 → 3 (Full House)
- Row 2 / Column 2 → 4 (Naked Single)
- Row 2 / Column 9 → 3 (Full House)
- Row 1 / Column 2 → 6 (Full House)
- Row 3 / Column 7 → 8 (Naked Single)
- Row 3 / Column 4 → 2 (Full House)
- Row 1 / Column 4 → 8 (Full House)
- Row 1 / Column 9 → 1 (Naked Single)
- Row 1 / Column 7 → 4 (Full House)
- Row 6 / Column 7 → 1 (Full House)
- Row 6 / Column 9 → 8 (Full House)
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