Solution for Evil Sudoku #1231679548242
5
8
9
9
2
6
9
1
7
4
7
6
1
2
4
7
6
5
9
6
1
9
7
9
7
8
3
7
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 5 / Column 8 → 7 (Hidden Single)
- Row 6 / Column 4 → 6 (Hidden Single)
- Row 5 / Column 3 → 9 (Hidden Single)
- Row 4 / Column 6 → 9 (Hidden Single)
- Row 2 / Column 2 → 1 (Hidden Single)
- Row 9 / Column 6 → 6 (Hidden Single)
- Row 8 / Column 7 → 9 (Hidden Single)
- Row 1 / Column 4 → 7 (Hidden Single)
- Row 3 / Column 3 → 7 (Hidden Single)
- Row 7 / Column 3 → 8 (Hidden Single)
- Row 7 / Column 6 → 2 (Hidden Single)
- Row 8 / Column 8 → 6 (Hidden Single)
- Row 1 / Column 7 → 6 (Hidden Single)
- Row 1 / Column 5 → 8 (Hidden Single)
- Row 5 / Column 4 → 8 (Hidden Single)
- Row 3 / Column 6 → 1 (Hidden Single)
- Row 2 / Column 1 → 6 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b4 => r8c2<>5
- Locked Candidates Type 1 (Pointing): 1 in b5 => r9c5<>1
- Locked Candidates Type 1 (Pointing): 4 in b6 => r4c2<>4
- Naked Pair: 2,3 in r35c7 => r4c7<>3
- X-Wing: 2 c38 r69 => r6c12,r9c9<>2
- Swordfish: 5 r378 c149 => r29c9,r9c4<>5
- Row 9 / Column 9 → 4 (Naked Single)
- Row 7 / Column 7 → 1 (Naked Single)
- Row 4 / Column 7 → 4 (Naked Single)
- Row 9 / Column 4 → 1 (Hidden Single)
- Naked Pair: 3,8 in r24c9 => r3c9<>3
- Empty Rectangle: 3 in b2 (r35c7) => r5c6<>3
- Row 5 / Column 6 → 5 (Naked Single)
- Row 2 / Column 8 → 5 (Hidden Single)
- Row 3 / Column 9 → 2 (Naked Single)
- Row 9 / Column 8 → 2 (Naked Single)
- Row 8 / Column 9 → 5 (Full House)
- Row 3 / Column 7 → 3 (Naked Single)
- Row 2 / Column 9 → 8 (Full House)
- Row 3 / Column 4 → 5 (Full House)
- Row 5 / Column 7 → 2 (Full House)
- Row 4 / Column 9 → 3 (Full House)
- Row 5 / Column 2 → 3 (Full House)
- Row 9 / Column 3 → 3 (Naked Single)
- Row 9 / Column 5 → 5 (Full House)
- Row 7 / Column 4 → 4 (Naked Single)
- Row 7 / Column 1 → 5 (Full House)
- Row 8 / Column 4 → 3 (Full House)
- Row 4 / Column 5 → 1 (Naked Single)
- Row 6 / Column 5 → 3 (Full House)
- Row 6 / Column 1 → 4 (Naked Single)
- Row 2 / Column 3 → 4 (Naked Single)
- Row 6 / Column 3 → 2 (Full House)
- Row 2 / Column 6 → 3 (Full House)
- Row 1 / Column 6 → 4 (Full House)
- Row 4 / Column 8 → 8 (Naked Single)
- Row 4 / Column 2 → 5 (Full House)
- Row 6 / Column 2 → 8 (Full House)
- Row 6 / Column 8 → 1 (Full House)
- Row 8 / Column 1 → 2 (Naked Single)
- Row 1 / Column 1 → 3 (Full House)
- Row 1 / Column 2 → 2 (Full House)
- Row 8 / Column 2 → 4 (Full House)
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