Solution for Evil Sudoku #1253461798239
2
8
3
6
5
1
4
9
7
5
1
7
9
4
2
3
8
6
9
4
6
7
8
3
2
1
5
1
3
5
8
6
4
7
2
9
6
9
8
7
2
5
1
3
4
4
7
2
3
9
1
5
6
8
9
4
2
5
7
8
3
1
6
8
5
1
4
6
3
2
7
9
6
3
7
1
2
9
8
5
4
This Sudoku Puzzle has 56 steps and it is solved using Hidden Single, Full House, Naked Single, Locked Candidates Type 1 (Pointing), Naked Triple, undefined techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 3 / Column 7 → 2 (Hidden Single)
- Row 2 / Column 2 → 5 (Hidden Single)
- Row 1 / Column 4 → 5 (Hidden Single)
- Row 6 / Column 6 → 4 (Hidden Single)
- Row 7 / Column 5 → 5 (Hidden Single)
- Row 8 / Column 1 → 5 (Hidden Single)
- Row 4 / Column 7 → 4 (Hidden Single)
- Row 9 / Column 4 → 2 (Hidden Single)
- Row 1 / Column 8 → 4 (Hidden Single)
- Row 2 / Column 3 → 1 (Hidden Single)
- Row 6 / Column 8 → 6 (Hidden Single)
- Row 4 / Column 4 → 6 (Hidden Single)
- Row 3 / Column 5 → 8 (Hidden Single)
- Row 7 / Column 4 → 8 (Hidden Single)
- Row 9 / Column 6 → 9 (Hidden Single)
- Row 1 / Column 9 → 6 (Hidden Single)
- Row 2 / Column 4 → 9 (Hidden Single)
- Row 3 / Column 4 → 3 (Full House)
- Row 1 / Column 6 → 7 (Naked Single)
- Row 1 / Column 3 → 3 (Full House)
- Row 3 / Column 6 → 6 (Full House)
- Row 7 / Column 7 → 6 (Hidden Single)
- Row 5 / Column 2 → 6 (Hidden Single)
- Row 5 / Column 8 → 9 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 2 in b6 => r7c9<>2
- Naked Triple: 3,7,9 in r4c2,r6c13 => r5c1<>3
- W-Wing: 9/7 in r3c2,r6c3 connected by 7 in r36c1 => r3c3,r4c2<>9
- Row 4 / Column 2 → 3 (Naked Single)
- Row 4 / Column 9 → 2 (Naked Single)
- Row 4 / Column 5 → 9 (Full House)
- Row 6 / Column 1 → 7 (Naked Single)
- Row 9 / Column 2 → 1 (Naked Single)
- Row 6 / Column 5 → 3 (Naked Single)
- Row 6 / Column 3 → 9 (Full House)
- Row 5 / Column 5 → 2 (Full House)
- Row 3 / Column 1 → 4 (Naked Single)
- Row 8 / Column 2 → 7 (Naked Single)
- Row 3 / Column 2 → 9 (Full House)
- Row 3 / Column 3 → 7 (Full House)
- Row 5 / Column 1 → 8 (Naked Single)
- Row 5 / Column 3 → 4 (Full House)
- Row 9 / Column 1 → 3 (Full House)
- Row 9 / Column 7 → 8 (Full House)
- Row 7 / Column 3 → 2 (Naked Single)
- Row 8 / Column 3 → 8 (Full House)
- Row 7 / Column 8 → 3 (Naked Single)
- Row 2 / Column 8 → 8 (Naked Single)
- Row 8 / Column 8 → 2 (Full House)
- Row 7 / Column 6 → 1 (Naked Single)
- Row 7 / Column 9 → 7 (Full House)
- Row 8 / Column 7 → 1 (Full House)
- Row 8 / Column 6 → 3 (Full House)
- Row 2 / Column 9 → 3 (Naked Single)
- Row 2 / Column 7 → 7 (Full House)
- Row 5 / Column 7 → 3 (Full House)
- Row 5 / Column 9 → 1 (Full House)
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