Solution for Evil Sudoku #2184169357242
5
3
6
2
1
8
7
9
4
9
1
8
4
6
7
3
2
5
2
7
4
5
3
9
8
6
1
1
7
2
3
6
9
4
8
5
6
3
9
8
5
4
1
7
2
4
8
5
1
2
7
3
9
6
8
4
7
6
5
1
9
2
3
2
9
1
7
8
3
5
4
6
6
5
3
9
4
2
7
1
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 3 / Column 2 → 9 (Hidden Single)
- Row 6 / Column 4 → 1 (Hidden Single)
- Row 4 / Column 1 → 1 (Hidden Single)
- Row 7 / Column 5 → 9 (Hidden Single)
- Row 4 / Column 6 → 9 (Hidden Single)
- Row 8 / Column 8 → 4 (Hidden Single)
- Row 2 / Column 5 → 6 (Hidden Single)
- Row 7 / Column 7 → 6 (Hidden Single)
- Row 6 / Column 9 → 6 (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 → 2 (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 → 4 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b2 => r8c6<>5
- Locked Candidates Type 1 (Pointing): 4 in b5 => r5c1<>4
- Locked Candidates Type 1 (Pointing): 3 in b8 => r8c2<>3
- Naked Pair: 2,8 in r3c57 => r3c6<>8
- X-Wing: 2 r27 c14 => r1c1,r89c4<>2
- Swordfish: 3 c237 r169 => r1c18,r6c1<>3
- Row 1 / Column 1 → 5 (Naked Single)
- Row 3 / Column 3 → 4 (Naked Single)
- Row 3 / Column 6 → 5 (Naked Single)
- Row 6 / Column 1 → 4 (Hidden Single)
- Naked Pair: 7,8 in r1c68 => r1c7<>8
- Empty Rectangle: 8 in b6 (r3c57) => r4c5<>8
- Row 4 / Column 5 → 3 (Naked Single)
- Row 2 / Column 8 → 3 (Hidden Single)
- Row 1 / Column 7 → 2 (Naked Single)
- Row 2 / Column 1 → 2 (Naked Single)
- Row 1 / Column 2 → 3 (Full House)
- Row 3 / Column 7 → 8 (Naked Single)
- Row 1 / Column 8 → 7 (Full House)
- Row 3 / Column 5 → 2 (Full House)
- Row 6 / Column 7 → 3 (Full House)
- Row 1 / Column 6 → 8 (Full House)
- Row 8 / Column 5 → 8 (Full House)
- Row 7 / Column 1 → 8 (Naked Single)
- Row 5 / Column 1 → 3 (Full House)
- Row 6 / Column 3 → 5 (Naked Single)
- Row 6 / Column 2 → 8 (Full House)
- Row 9 / Column 3 → 3 (Full House)
- Row 5 / Column 6 → 4 (Naked Single)
- Row 5 / Column 4 → 8 (Full House)
- Row 9 / Column 4 → 5 (Naked Single)
- Row 7 / Column 8 → 5 (Naked Single)
- Row 7 / Column 4 → 2 (Full House)
- Row 4 / Column 8 → 8 (Full House)
- Row 4 / Column 9 → 5 (Full House)
- Row 2 / Column 6 → 7 (Naked Single)
- Row 2 / Column 4 → 4 (Full House)
- Row 8 / Column 4 → 7 (Full House)
- Row 8 / Column 6 → 3 (Full House)
- Row 9 / Column 2 → 2 (Naked Single)
- Row 8 / Column 2 → 5 (Full House)
- Row 8 / Column 9 → 2 (Full House)
- Row 9 / Column 9 → 8 (Full House)
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