Solution for Evil Sudoku #3326193857442
5
8
9
4
1
2
7
3
6
3
1
2
6
9
7
8
4
5
4
7
6
5
8
3
2
9
1
1
7
4
8
9
3
6
2
5
9
8
3
2
5
6
1
7
4
6
2
5
1
4
7
8
3
9
2
6
7
9
5
1
3
4
8
4
3
1
7
2
8
5
6
9
9
5
8
3
6
4
7
1
2
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 3 / Column 2 → 3 (Hidden Single)
- Row 6 / Column 4 → 1 (Hidden Single)
- Row 4 / Column 1 → 1 (Hidden Single)
- Row 7 / Column 5 → 3 (Hidden Single)
- Row 4 / Column 6 → 3 (Hidden Single)
- Row 8 / Column 8 → 6 (Hidden Single)
- Row 2 / Column 5 → 9 (Hidden Single)
- Row 7 / Column 7 → 9 (Hidden Single)
- Row 6 / Column 9 → 9 (Hidden Single)
- Row 7 / Column 3 → 7 (Hidden Single)
- Row 3 / Column 9 → 1 (Hidden Single)
- Row 2 / Column 2 → 1 (Hidden Single)
- Row 4 / Column 3 → 4 (Hidden Single)
- Row 6 / Column 5 → 7 (Hidden Single)
- Row 5 / Column 9 → 7 (Hidden Single)
- Row 9 / Column 8 → 1 (Hidden Single)
- Row 4 / Column 7 → 6 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b2 => r8c6<>5
- Locked Candidates Type 1 (Pointing): 6 in b5 => r5c1<>6
- Locked Candidates Type 1 (Pointing): 8 in b8 => r8c2<>8
- Naked Pair: 2,4 in r3c57 => r3c6<>2
- X-Wing: 4 r27 c14 => r1c1,r89c4<>4
- Swordfish: 8 c237 r169 => r1c18,r6c1<>8
- Row 1 / Column 1 → 5 (Naked Single)
- Row 3 / Column 3 → 6 (Naked Single)
- Row 3 / Column 6 → 5 (Naked Single)
- Row 6 / Column 1 → 6 (Hidden Single)
- Naked Pair: 2,7 in r1c68 => r1c7<>2
- Empty Rectangle: 2 in b6 (r3c57) => r4c5<>2
- Row 4 / Column 5 → 8 (Naked Single)
- Row 2 / Column 8 → 8 (Hidden Single)
- Row 1 / Column 7 → 4 (Naked Single)
- Row 2 / Column 1 → 4 (Naked Single)
- Row 1 / Column 2 → 8 (Full House)
- Row 3 / Column 7 → 2 (Naked Single)
- Row 1 / Column 8 → 7 (Full House)
- Row 3 / Column 5 → 4 (Full House)
- Row 6 / Column 7 → 8 (Full House)
- Row 1 / Column 6 → 2 (Full House)
- Row 8 / Column 5 → 2 (Full House)
- Row 7 / Column 1 → 2 (Naked Single)
- Row 5 / Column 1 → 8 (Full House)
- Row 6 / Column 3 → 5 (Naked Single)
- Row 6 / Column 2 → 2 (Full House)
- Row 9 / Column 3 → 8 (Full House)
- Row 5 / Column 6 → 6 (Naked Single)
- Row 5 / Column 4 → 2 (Full House)
- Row 9 / Column 4 → 5 (Naked Single)
- Row 7 / Column 8 → 5 (Naked Single)
- Row 7 / Column 4 → 4 (Full House)
- Row 4 / Column 8 → 2 (Full House)
- Row 4 / Column 9 → 5 (Full House)
- Row 2 / Column 6 → 7 (Naked Single)
- Row 2 / Column 4 → 6 (Full House)
- Row 8 / Column 4 → 7 (Full House)
- Row 8 / Column 6 → 8 (Full House)
- Row 9 / Column 2 → 4 (Naked Single)
- Row 8 / Column 2 → 5 (Full House)
- Row 8 / Column 9 → 4 (Full House)
- Row 9 / Column 9 → 2 (Full House)
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