Solution for Evil Sudoku #4287963124542
2
5
4
1
9
3
6
8
7
9
1
7
4
6
8
5
3
2
8
6
3
7
2
5
4
9
1
3
7
1
9
6
5
8
4
2
6
8
9
1
2
4
3
7
5
5
4
2
3
8
7
9
1
6
5
2
8
4
1
6
7
3
9
7
9
1
8
5
3
2
4
6
6
3
4
2
7
9
1
5
8
This Sudoku Puzzle has 60 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Pair, undefined, Swordfish, Naked Single, Empty Rectangle, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 4 / Column 6 → 9 (Hidden Single)
- Row 1 / Column 4 → 9 (Hidden Single)
- Row 6 / Column 4 → 3 (Hidden Single)
- Row 5 / Column 7 → 3 (Hidden Single)
- Row 3 / Column 7 → 4 (Hidden Single)
- Row 5 / Column 2 → 6 (Hidden Single)
- Row 8 / Column 8 → 7 (Hidden Single)
- Row 2 / Column 3 → 3 (Hidden Single)
- Row 9 / Column 6 → 6 (Hidden Single)
- Row 7 / Column 7 → 6 (Hidden Single)
- Row 3 / Column 4 → 5 (Hidden Single)
- Row 2 / Column 2 → 9 (Hidden Single)
- Row 9 / Column 3 → 9 (Hidden Single)
- Row 9 / Column 5 → 4 (Hidden Single)
- Row 5 / Column 6 → 4 (Hidden Single)
- Row 7 / Column 4 → 7 (Hidden Single)
- Row 8 / Column 9 → 9 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 2 in b4 => r6c8<>2
- Locked Candidates Type 1 (Pointing): 7 in b5 => r1c5<>7
- Locked Candidates Type 1 (Pointing): 1 in b6 => r2c8<>1
- Naked Pair: 5,8 in r57c3 => r6c3<>8
- X-Wing: 5 c27 r14 => r1c1,r4c89<>5
- Swordfish: 1 r237 c169 => r1c16,r8c1<>1
- Row 1 / Column 1 → 2 (Naked Single)
- Row 3 / Column 3 → 7 (Naked Single)
- Row 6 / Column 3 → 2 (Naked Single)
- Row 1 / Column 6 → 7 (Hidden Single)
- Naked Pair: 4,8 in r68c1 => r7c1<>8
- Empty Rectangle: 8 in b8 (r57c3) => r5c4<>8
- Row 5 / Column 4 → 1 (Naked Single)
- Row 6 / Column 8 → 1 (Hidden Single)
- Row 1 / Column 5 → 1 (Hidden Single)
- Row 1 / Column 2 → 5 (Naked Single)
- Row 1 / Column 7 → 8 (Full House)
- Row 2 / Column 1 → 1 (Full House)
- Row 3 / Column 6 → 2 (Naked Single)
- Row 2 / Column 6 → 8 (Full House)
- Row 3 / Column 9 → 1 (Full House)
- Row 7 / Column 6 → 1 (Full House)
- Row 8 / Column 7 → 2 (Naked Single)
- Row 4 / Column 7 → 5 (Full House)
- Row 7 / Column 1 → 5 (Naked Single)
- Row 7 / Column 3 → 8 (Full House)
- Row 5 / Column 3 → 5 (Full House)
- Row 5 / Column 8 → 8 (Full House)
- Row 8 / Column 4 → 8 (Naked Single)
- Row 9 / Column 4 → 2 (Full House)
- Row 8 / Column 1 → 4 (Naked Single)
- Row 6 / Column 1 → 8 (Full House)
- Row 8 / Column 2 → 1 (Full House)
- Row 4 / Column 9 → 2 (Naked Single)
- Row 4 / Column 8 → 4 (Full House)
- Row 9 / Column 8 → 5 (Naked Single)
- Row 2 / Column 8 → 2 (Full House)
- Row 2 / Column 9 → 5 (Full House)
- Row 9 / Column 9 → 8 (Full House)
- Row 6 / Column 5 → 7 (Naked Single)
- Row 4 / Column 5 → 8 (Full House)
- Row 4 / Column 2 → 7 (Full House)
- Row 6 / Column 2 → 4 (Full House)
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