Solution for Evil Sudoku #3197682431595
7
5
3
8
2
4
1
6
9
6
8
9
1
3
5
4
2
7
1
2
4
6
7
9
5
3
8
2
9
5
4
1
7
6
3
8
7
4
8
3
9
6
2
5
1
3
1
6
2
8
5
4
9
7
9
4
6
3
8
2
5
7
1
8
1
3
5
7
4
9
6
2
7
5
2
9
6
1
8
4
3
This Sudoku Puzzle has 61 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Pair, Locked Triple, Locked Candidates Type 1 (Pointing) techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 4 / Column 6 → 8 (Naked Single)
- Row 4 / Column 4 → 7 (Naked Single)
- Row 6 / Column 6 → 1 (Naked Single)
- Row 6 / Column 4 → 2 (Naked Single)
- Row 5 / Column 5 → 9 (Full House)
- Row 1 / Column 5 → 8 (Hidden Single)
- Row 1 / Column 7 → 1 (Hidden Single)
- Row 6 / Column 3 → 8 (Hidden Single)
- Row 7 / Column 5 → 1 (Hidden Single)
- Locked Pair: 2,3 in r23c5 => r2c6,r89c5<>3
- Locked Triple: 4,7,8 in r789c2 => r23c2,r8c1<>4, r2c2,r89c1,r9c3<>7
- Locked Candidates Type 1 (Pointing): 4 in b3 => r5c9<>4
- Locked Candidates Type 1 (Pointing): 7 in b3 => r78c8<>7
- Locked Candidates Type 1 (Pointing): 9 in b4 => r4c79<>9
- Row 4 / Column 7 → 3 (Naked Single)
- Row 2 / Column 9 → 9 (Hidden Single)
- Row 2 / Column 2 → 2 (Naked Single)
- Row 2 / Column 5 → 3 (Naked Single)
- Row 2 / Column 8 → 7 (Naked Single)
- Row 3 / Column 5 → 2 (Naked Single)
- Row 3 / Column 8 → 3 (Naked Single)
- Row 1 / Column 8 → 2 (Naked Single)
- Row 1 / Column 9 → 4 (Full House)
- Row 7 / Column 8 → 5 (Naked Single)
- Locked Candidates Type 1 (Pointing): 5 in b8 => r8c1<>5
- Row 8 / Column 1 → 3 (Naked Single)
- Row 1 / Column 1 → 7 (Naked Single)
- Row 1 / Column 3 → 3 (Full House)
- Row 7 / Column 6 → 3 (Hidden Single)
- Row 7 / Column 9 → 2 (Naked Single)
- Row 5 / Column 9 → 5 (Naked Single)
- Row 7 / Column 7 → 7 (Naked Single)
- Row 7 / Column 2 → 4 (Full House)
- Row 4 / Column 9 → 6 (Naked Single)
- Row 9 / Column 9 → 3 (Full House)
- Row 5 / Column 1 → 4 (Naked Single)
- Row 9 / Column 7 → 8 (Naked Single)
- Row 4 / Column 2 → 9 (Naked Single)
- Row 4 / Column 3 → 5 (Full House)
- Row 6 / Column 8 → 9 (Naked Single)
- Row 8 / Column 8 → 6 (Full House)
- Row 8 / Column 7 → 9 (Full House)
- Row 5 / Column 3 → 7 (Naked Single)
- Row 5 / Column 7 → 2 (Full House)
- Row 6 / Column 1 → 6 (Full House)
- Row 6 / Column 7 → 4 (Full House)
- Row 9 / Column 2 → 7 (Naked Single)
- Row 3 / Column 2 → 6 (Naked Single)
- Row 8 / Column 2 → 8 (Full House)
- Row 9 / Column 3 → 1 (Naked Single)
- Row 9 / Column 1 → 5 (Full House)
- Row 3 / Column 1 → 1 (Full House)
- Row 9 / Column 5 → 6 (Full House)
- Row 8 / Column 5 → 7 (Full House)
- Row 2 / Column 3 → 4 (Naked Single)
- Row 3 / Column 3 → 9 (Full House)
- Row 3 / Column 4 → 4 (Full House)
- Row 2 / Column 6 → 5 (Naked Single)
- Row 2 / Column 4 → 1 (Full House)
- Row 8 / Column 4 → 5 (Full House)
- Row 8 / Column 6 → 4 (Full House)
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