Solution for Evil Sudoku #2457862134939
7
2
6
5
1
4
3
8
9
9
1
3
8
6
7
4
5
2
4
5
8
2
9
3
6
7
1
1
9
3
4
6
8
2
7
5
2
7
8
1
9
5
6
3
4
5
6
4
7
3
2
8
1
9
8
3
1
6
5
2
9
4
7
7
4
6
3
8
9
5
2
1
9
2
5
1
4
7
3
8
6
This Sudoku Puzzle has 56 steps and it is solved using Hidden Single, Full House, Locked Candidates Type 1 (Pointing), Naked Triple, undefined, Naked Single techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 6 / Column 7 → 8 (Hidden Single)
- Row 4 / Column 6 → 8 (Hidden Single)
- Row 7 / Column 7 → 9 (Hidden Single)
- Row 2 / Column 1 → 5 (Hidden Single)
- Row 8 / Column 2 → 5 (Hidden Single)
- Row 9 / Column 4 → 5 (Hidden Single)
- Row 3 / Column 5 → 5 (Hidden Single)
- Row 9 / Column 8 → 8 (Hidden Single)
- Row 4 / Column 8 → 6 (Hidden Single)
- Row 6 / Column 4 → 6 (Hidden Single)
- Row 1 / Column 4 → 9 (Hidden Single)
- Row 8 / Column 3 → 2 (Hidden Single)
- Row 7 / Column 5 → 4 (Hidden Single)
- Row 9 / Column 9 → 6 (Hidden Single)
- Row 3 / Column 7 → 6 (Hidden Single)
- Row 5 / Column 2 → 6 (Hidden Single)
- Row 5 / Column 8 → 3 (Hidden Single)
- Row 7 / Column 6 → 6 (Hidden Single)
- Row 1 / Column 6 → 3 (Hidden Single)
- Row 3 / Column 4 → 4 (Hidden Single)
- Row 8 / Column 4 → 3 (Hidden Single)
- Row 7 / Column 4 → 7 (Full House)
- Row 9 / Column 6 → 1 (Full House)
- Row 9 / Column 3 → 7 (Full House)
- Locked Candidates Type 1 (Pointing): 9 in b6 => r3c9<>9
- Naked Triple: 1,3,7 in r4c13,r6c2 => r5c1<>7
- W-Wing: 3/1 in r4c3,r7c2 connected by 1 in r47c1 => r6c2,r7c3<>3
- Row 6 / Column 2 → 7 (Naked Single)
- Row 1 / Column 2 → 2 (Naked Single)
- Row 4 / Column 1 → 1 (Naked Single)
- Row 6 / Column 9 → 9 (Naked Single)
- Row 6 / Column 5 → 3 (Full House)
- Row 2 / Column 2 → 1 (Naked Single)
- Row 7 / Column 2 → 3 (Full House)
- Row 4 / Column 3 → 3 (Naked Single)
- Row 4 / Column 5 → 7 (Full House)
- Row 5 / Column 5 → 9 (Full House)
- Row 7 / Column 1 → 8 (Naked Single)
- Row 7 / Column 3 → 1 (Full House)
- Row 3 / Column 3 → 9 (Naked Single)
- Row 5 / Column 1 → 4 (Naked Single)
- Row 1 / Column 1 → 7 (Full House)
- Row 2 / Column 3 → 4 (Full House)
- Row 5 / Column 3 → 8 (Full House)
- Row 1 / Column 7 → 4 (Full House)
- Row 3 / Column 8 → 7 (Naked Single)
- Row 2 / Column 7 → 2 (Naked Single)
- Row 2 / Column 8 → 9 (Naked Single)
- Row 8 / Column 8 → 4 (Full House)
- Row 2 / Column 6 → 7 (Full House)
- Row 3 / Column 6 → 2 (Full House)
- Row 3 / Column 9 → 1 (Full House)
- Row 5 / Column 7 → 7 (Naked Single)
- Row 5 / Column 9 → 2 (Full House)
- Row 8 / Column 9 → 7 (Full House)
- Row 8 / Column 7 → 1 (Full House)
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