Solution for Evil Sudoku #2443295876143
4
7
1
3
6
9
5
2
8
5
6
9
8
7
2
4
3
1
8
3
2
1
5
4
9
7
6
2
5
7
1
3
4
9
8
6
6
4
8
2
9
5
7
1
3
3
9
1
7
6
8
4
2
5
6
9
3
7
4
2
8
1
5
1
5
4
3
8
6
9
2
7
2
8
7
5
1
9
6
4
3
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 4 / Column 2 → 5 (Naked Single)
- Row 4 / Column 3 → 7 (Naked Single)
- Row 2 / Column 5 → 7 (Hidden Single)
- Row 4 / Column 8 → 9 (Hidden Single)
- Row 6 / Column 5 → 1 (Hidden Single)
- Row 2 / Column 8 → 5 (Hidden Single)
- Row 1 / Column 6 → 9 (Hidden Single)
- Row 9 / Column 4 → 9 (Hidden Single)
- Row 6 / Column 7 → 4 (Hidden Single)
- Row 6 / Column 6 → 3 (Naked Single)
- Row 5 / Column 6 → 5 (Naked Single)
- Row 7 / Column 6 → 4 (Full House)
- Row 6 / Column 2 → 8 (Naked Single)
- Row 6 / Column 8 → 2 (Full House)
- Row 3 / Column 1 → 5 (Hidden Single)
- Row 7 / Column 5 → 5 (Hidden Single)
- Row 8 / Column 9 → 9 (Hidden Single)
- Row 5 / Column 4 → 2 (Hidden Single)
- Row 3 / Column 7 → 9 (Hidden Single)
- Row 3 / Column 3 → 8 (Hidden Single)
- Row 8 / Column 1 → 7 (Hidden Single)
- Row 7 / Column 9 → 7 (Hidden Single)
- Row 8 / Column 2 → 4 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 2 in b3 => r9c9<>2
- X-Wing: 1 c38 r18 => r1c1<>1
- X-Wing: 3 c38 r17 => r1c159,r7c1<>3
- Row 3 / Column 5 → 3 (Hidden Single)
- Naked Pair: 4,6 in r1c15 => r1c89<>6, r1c9<>4
- Row 1 / Column 9 → 2 (Naked Single)
- Row 3 / Column 2 → 2 (Hidden Single)
- Empty Rectangle: 6 in b3 (r29c2) => r9c9<>6
- XY-Wing: 1/8/3 in r18c8,r9c9 => r2c9,r7c8<>3
- Row 9 / Column 9 → 3 (Hidden Single)
- Row 1 / Column 8 → 3 (Hidden Single)
- Row 1 / Column 3 → 1 (Naked Single)
- Row 8 / Column 3 → 2 (Naked Single)
- Row 7 / Column 3 → 3 (Full House)
- Row 8 / Column 5 → 8 (Naked Single)
- Row 8 / Column 8 → 1 (Full House)
- Row 9 / Column 5 → 2 (Full House)
- Row 9 / Column 7 → 6 (Naked Single)
- Row 2 / Column 7 → 1 (Naked Single)
- Row 7 / Column 7 → 2 (Full House)
- Row 7 / Column 8 → 8 (Full House)
- Row 5 / Column 8 → 6 (Full House)
- Row 7 / Column 1 → 6 (Full House)
- Row 5 / Column 9 → 8 (Full House)
- Row 9 / Column 2 → 1 (Naked Single)
- Row 9 / Column 1 → 8 (Full House)
- Row 1 / Column 1 → 4 (Naked Single)
- Row 1 / Column 5 → 6 (Full House)
- Row 3 / Column 4 → 4 (Full House)
- Row 4 / Column 5 → 4 (Full House)
- Row 3 / Column 9 → 6 (Full House)
- Row 4 / Column 4 → 6 (Full House)
- Row 2 / Column 9 → 4 (Full House)
- Row 5 / Column 2 → 3 (Naked Single)
- Row 2 / Column 2 → 6 (Full House)
- Row 2 / Column 1 → 3 (Full House)
- Row 5 / Column 1 → 1 (Full House)
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