Solution for Evil Sudoku #2325174386943
3
8
6
9
2
7
4
1
5
7
9
1
3
5
4
6
2
8
4
5
2
1
6
8
3
7
9
7
5
9
1
3
4
8
6
2
8
1
6
9
7
2
5
4
3
2
3
4
5
8
6
9
1
7
6
4
1
2
9
3
5
7
8
2
8
5
1
6
7
4
3
9
7
9
3
8
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6
2
1
This Sudoku Puzzle has 60 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing), undefined, Naked Pair, Empty Rectangle techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 6 → 4 (Naked Single)
- Row 3 / Column 6 → 8 (Naked Single)
- Row 4 / Column 1 → 7 (Hidden Single)
- Row 6 / Column 9 → 7 (Hidden Single)
- Row 5 / Column 8 → 8 (Hidden Single)
- Row 8 / Column 8 → 4 (Hidden Single)
- Row 5 / Column 4 → 9 (Hidden Single)
- Row 7 / Column 4 → 2 (Hidden Single)
- Row 6 / Column 4 → 5 (Naked Single)
- Row 2 / Column 4 → 3 (Naked Single)
- Row 8 / Column 4 → 1 (Full House)
- Row 6 / Column 5 → 4 (Naked Single)
- Row 6 / Column 3 → 2 (Full House)
- Row 8 / Column 6 → 7 (Hidden Single)
- Row 1 / Column 7 → 4 (Hidden Single)
- Row 5 / Column 3 → 4 (Hidden Single)
- Row 7 / Column 7 → 7 (Hidden Single)
- Row 4 / Column 5 → 1 (Hidden Single)
- Row 9 / Column 2 → 7 (Hidden Single)
- Row 3 / Column 7 → 3 (Hidden Single)
- Row 9 / Column 3 → 8 (Hidden Single)
- Row 1 / Column 2 → 8 (Hidden Single)
- Row 2 / Column 2 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 1 in b9 => r9c1<>1
- X-Wing: 5 r38 c39 => r1c39,r59c9<>5
- Row 5 / Column 7 → 5 (Hidden Single)
- X-Wing: 9 r38 c29 => r1c9<>9
- Naked Pair: 2,6 in r15c9 => r89c9<>6, r9c9<>2
- Row 9 / Column 9 → 1 (Naked Single)
- Row 2 / Column 7 → 1 (Hidden Single)
- Empty Rectangle: 6 in b9 (r2c18) => r9c1<>6
- XY-Wing: 3/9/5 in r8c29,r9c1 => r8c3,r9c8<>5
- Row 8 / Column 9 → 5 (Hidden Single)
- Row 3 / Column 9 → 9 (Naked Single)
- Row 3 / Column 2 → 1 (Naked Single)
- Row 3 / Column 3 → 5 (Full House)
- Row 5 / Column 2 → 3 (Naked Single)
- Row 5 / Column 1 → 1 (Full House)
- Row 8 / Column 2 → 9 (Full House)
- Row 7 / Column 1 → 6 (Naked Single)
- Row 2 / Column 1 → 9 (Naked Single)
- Row 7 / Column 3 → 1 (Naked Single)
- Row 7 / Column 8 → 9 (Full House)
- Row 8 / Column 3 → 3 (Naked Single)
- Row 1 / Column 3 → 6 (Full House)
- Row 1 / Column 1 → 3 (Full House)
- Row 8 / Column 5 → 6 (Full House)
- Row 9 / Column 1 → 5 (Full House)
- Row 9 / Column 5 → 3 (Full House)
- Row 2 / Column 5 → 5 (Naked Single)
- Row 1 / Column 5 → 9 (Full House)
- Row 2 / Column 8 → 6 (Full House)
- Row 1 / Column 9 → 2 (Naked Single)
- Row 1 / Column 8 → 5 (Full House)
- Row 9 / Column 8 → 2 (Full House)
- Row 5 / Column 9 → 6 (Full House)
- Row 9 / Column 7 → 6 (Full House)
- Row 4 / Column 7 → 2 (Full House)
- Row 5 / Column 6 → 2 (Full House)
- Row 4 / Column 6 → 6 (Full House)
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