Solution for Evil Sudoku #4271546298342
9
3
8
2
5
6
4
7
1
5
2
1
8
4
7
3
6
9
7
4
6
1
9
3
8
5
2
6
1
2
5
4
3
7
8
9
4
7
5
2
9
8
6
1
3
3
8
9
6
7
1
5
2
4
3
9
7
8
2
4
1
6
5
1
5
2
7
3
6
9
8
4
4
6
8
9
1
5
2
3
7
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 → 5 (Hidden Single)
- Row 1 / Column 4 → 5 (Hidden Single)
- Row 6 / Column 4 → 6 (Hidden Single)
- Row 5 / Column 7 → 6 (Hidden Single)
- Row 3 / Column 7 → 8 (Hidden Single)
- Row 5 / Column 2 → 4 (Hidden Single)
- Row 8 / Column 8 → 1 (Hidden Single)
- Row 2 / Column 3 → 6 (Hidden Single)
- Row 9 / Column 6 → 4 (Hidden Single)
- Row 7 / Column 7 → 4 (Hidden Single)
- Row 3 / Column 4 → 3 (Hidden Single)
- Row 2 / Column 2 → 5 (Hidden Single)
- Row 9 / Column 3 → 5 (Hidden Single)
- Row 9 / Column 5 → 8 (Hidden Single)
- Row 5 / Column 6 → 8 (Hidden Single)
- Row 7 / Column 4 → 1 (Hidden Single)
- Row 8 / Column 9 → 5 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 9 in b4 => r6c8<>9
- Locked Candidates Type 1 (Pointing): 1 in b5 => r1c5<>1
- Locked Candidates Type 1 (Pointing): 2 in b6 => r2c8<>2
- Naked Pair: 3,7 in r57c3 => r6c3<>7
- X-Wing: 3 c27 r14 => r1c1,r4c89<>3
- Swordfish: 2 r237 c169 => r1c16,r8c1<>2
- Row 1 / Column 1 → 9 (Naked Single)
- Row 3 / Column 3 → 1 (Naked Single)
- Row 6 / Column 3 → 9 (Naked Single)
- Row 1 / Column 6 → 1 (Hidden Single)
- Naked Pair: 7,8 in r68c1 => r7c1<>7
- Empty Rectangle: 7 in b8 (r57c3) => r5c4<>7
- Row 5 / Column 4 → 2 (Naked Single)
- Row 6 / Column 8 → 2 (Hidden Single)
- Row 1 / Column 5 → 2 (Hidden Single)
- Row 1 / Column 2 → 3 (Naked Single)
- Row 1 / Column 7 → 7 (Full House)
- Row 2 / Column 1 → 2 (Full House)
- Row 3 / Column 6 → 9 (Naked Single)
- Row 2 / Column 6 → 7 (Full House)
- Row 3 / Column 9 → 2 (Full House)
- Row 7 / Column 6 → 2 (Full House)
- Row 8 / Column 7 → 9 (Naked Single)
- Row 4 / Column 7 → 3 (Full House)
- Row 7 / Column 1 → 3 (Naked Single)
- Row 7 / Column 3 → 7 (Full House)
- Row 5 / Column 3 → 3 (Full House)
- Row 5 / Column 8 → 7 (Full House)
- Row 8 / Column 4 → 7 (Naked Single)
- Row 9 / Column 4 → 9 (Full House)
- Row 8 / Column 1 → 8 (Naked Single)
- Row 6 / Column 1 → 7 (Full House)
- Row 8 / Column 2 → 2 (Full House)
- Row 4 / Column 9 → 9 (Naked Single)
- Row 4 / Column 8 → 8 (Full House)
- Row 9 / Column 8 → 3 (Naked Single)
- Row 2 / Column 8 → 9 (Full House)
- Row 2 / Column 9 → 3 (Full House)
- Row 9 / Column 9 → 7 (Full House)
- Row 6 / Column 5 → 1 (Naked Single)
- Row 4 / Column 5 → 7 (Full House)
- Row 4 / Column 2 → 1 (Full House)
- Row 6 / Column 2 → 8 (Full House)
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