Solution for Evil Sudoku #1293468571296
3
4
5
9
2
6
5
7
4
7
2
9
1
6
5
3
8
3
7
9
1
5
4
7
This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Candidates Type 1 (Pointing), Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 5 / Column 8 → 9 (Hidden Single)
- Row 4 / Column 1 → 3 (Hidden Single)
- Row 5 / Column 2 → 1 (Hidden Single)
- Row 1 / Column 8 → 5 (Hidden Single)
- Row 6 / Column 9 → 4 (Hidden Single)
- Row 2 / Column 4 → 9 (Hidden Single)
- Row 4 / Column 7 → 7 (Hidden Single)
- Row 7 / Column 2 → 7 (Hidden Single)
- Row 3 / Column 8 → 6 (Hidden Single)
- Row 4 / Column 9 → 1 (Hidden Single)
- Row 2 / Column 8 → 3 (Hidden Single)
- Row 5 / Column 6 → 3 (Hidden Single)
- Row 3 / Column 5 → 3 (Hidden Single)
- Locked Pair: 1,2 in r23c1 => r1c13,r3c3,r9c1<>1, r79c1<>2
- Row 1 / Column 1 → 6 (Naked Single)
- Locked Candidates Type 1 (Pointing): 8 in b1 => r6c3<>8
- Locked Candidates Type 1 (Pointing): 2 in b5 => r78c6<>2
- Locked Pair: 1,6 in r8c46 => r7c6,r8c239,r9c4<>6, r8c3,r9c4<>1
- Row 8 / Column 2 → 2 (Naked Single)
- Row 9 / Column 3 → 1 (Hidden Single)
- Row 9 / Column 9 → 3 (Hidden Single)
- Row 8 / Column 9 → 9 (Naked Single)
- Row 1 / Column 9 → 8 (Naked Single)
- Row 8 / Column 3 → 3 (Naked Single)
- Row 1 / Column 3 → 7 (Naked Single)
- Row 1 / Column 5 → 4 (Naked Single)
- Row 3 / Column 9 → 2 (Naked Single)
- Row 7 / Column 9 → 6 (Full House)
- Row 3 / Column 3 → 8 (Naked Single)
- Row 1 / Column 6 → 1 (Naked Single)
- Row 1 / Column 7 → 9 (Full House)
- Row 5 / Column 5 → 8 (Naked Single)
- Row 5 / Column 4 → 4 (Full House)
- Row 2 / Column 7 → 1 (Naked Single)
- Row 3 / Column 7 → 4 (Full House)
- Row 3 / Column 1 → 1 (Naked Single)
- Row 3 / Column 4 → 7 (Full House)
- Row 2 / Column 6 → 8 (Full House)
- Row 2 / Column 1 → 2 (Full House)
- Row 7 / Column 3 → 9 (Naked Single)
- Row 6 / Column 3 → 6 (Full House)
- Row 8 / Column 6 → 6 (Naked Single)
- Row 8 / Column 4 → 1 (Full House)
- Row 7 / Column 6 → 4 (Naked Single)
- Row 6 / Column 4 → 5 (Naked Single)
- Row 4 / Column 6 → 2 (Naked Single)
- Row 6 / Column 6 → 7 (Full House)
- Row 4 / Column 4 → 6 (Full House)
- Row 9 / Column 4 → 8 (Full House)
- Row 7 / Column 1 → 5 (Naked Single)
- Row 6 / Column 1 → 9 (Naked Single)
- Row 9 / Column 1 → 4 (Full House)
- Row 9 / Column 2 → 6 (Full House)
- Row 6 / Column 2 → 8 (Naked Single)
- Row 4 / Column 2 → 5 (Full House)
- Row 4 / Column 8 → 8 (Full House)
- Row 6 / Column 8 → 2 (Full House)
- Row 9 / Column 7 → 2 (Naked Single)
- Row 7 / Column 7 → 8 (Full House)
- Row 7 / Column 5 → 2 (Full House)
- Row 9 / Column 5 → 5 (Full House)
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