Solution for Evil Sudoku #3197283154695
7
6
5
8
3
1
4
2
9
2
8
9
4
5
6
1
3
7
4
3
1
2
7
9
6
5
8
3
9
6
1
4
7
2
5
8
7
1
8
5
9
2
3
6
4
5
4
2
3
8
6
1
9
7
9
1
2
5
8
3
6
7
4
8
4
5
6
7
1
9
2
3
7
6
3
9
2
4
8
1
5
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 → 4 (Naked Single)
- Row 6 / Column 4 → 3 (Naked Single)
- Row 5 / Column 5 → 9 (Full House)
- Row 1 / Column 5 → 8 (Hidden Single)
- Row 1 / Column 7 → 4 (Hidden Single)
- Row 6 / Column 3 → 8 (Hidden Single)
- Row 7 / Column 5 → 4 (Hidden Single)
- Locked Pair: 3,5 in r23c5 => r2c6,r89c5<>5
- Locked Triple: 1,7,8 in r789c2 => r23c2,r8c1<>1, r2c2,r89c1,r9c3<>7
- Locked Candidates Type 1 (Pointing): 1 in b3 => r5c9<>1
- Locked Candidates Type 1 (Pointing): 7 in b3 => r78c8<>7
- Locked Candidates Type 1 (Pointing): 9 in b4 => r4c79<>9
- Row 4 / Column 7 → 5 (Naked Single)
- Row 2 / Column 9 → 9 (Hidden Single)
- Row 2 / Column 2 → 3 (Naked Single)
- Row 2 / Column 5 → 5 (Naked Single)
- Row 2 / Column 8 → 7 (Naked Single)
- Row 3 / Column 5 → 3 (Naked Single)
- Row 3 / Column 8 → 5 (Naked Single)
- Row 1 / Column 8 → 3 (Naked Single)
- Row 1 / Column 9 → 1 (Full House)
- Row 7 / Column 8 → 6 (Naked Single)
- Locked Candidates Type 1 (Pointing): 6 in b8 => r8c1<>6
- Row 8 / Column 1 → 5 (Naked Single)
- Row 1 / Column 1 → 7 (Naked Single)
- Row 1 / Column 3 → 5 (Full House)
- Row 7 / Column 6 → 5 (Hidden Single)
- Row 7 / Column 9 → 3 (Naked Single)
- Row 5 / Column 9 → 6 (Naked Single)
- Row 7 / Column 7 → 7 (Naked Single)
- Row 7 / Column 2 → 1 (Full House)
- Row 4 / Column 9 → 2 (Naked Single)
- Row 9 / Column 9 → 5 (Full House)
- Row 5 / Column 1 → 1 (Naked Single)
- Row 9 / Column 7 → 8 (Naked Single)
- Row 4 / Column 2 → 9 (Naked Single)
- Row 4 / Column 3 → 6 (Full House)
- Row 6 / Column 8 → 9 (Naked Single)
- Row 8 / Column 8 → 2 (Full House)
- Row 8 / Column 7 → 9 (Full House)
- Row 5 / Column 3 → 7 (Naked Single)
- Row 5 / Column 7 → 3 (Full House)
- Row 6 / Column 1 → 2 (Full House)
- Row 6 / Column 7 → 1 (Full House)
- Row 9 / Column 2 → 7 (Naked Single)
- Row 3 / Column 2 → 2 (Naked Single)
- Row 8 / Column 2 → 8 (Full House)
- Row 9 / Column 3 → 4 (Naked Single)
- Row 9 / Column 1 → 6 (Full House)
- Row 3 / Column 1 → 4 (Full House)
- Row 9 / Column 5 → 2 (Full House)
- Row 8 / Column 5 → 7 (Full House)
- Row 2 / Column 3 → 1 (Naked Single)
- Row 3 / Column 3 → 9 (Full House)
- Row 3 / Column 4 → 1 (Full House)
- Row 2 / Column 6 → 6 (Naked Single)
- Row 2 / Column 4 → 4 (Full House)
- Row 8 / Column 4 → 6 (Full House)
- Row 8 / Column 6 → 1 (Full House)
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