Solution for Evil Sudoku #1192763451842
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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 8 → 3 (Hidden Single)
- Row 6 / Column 6 → 7 (Hidden Single)
- Row 4 / Column 9 → 7 (Hidden Single)
- Row 7 / Column 7 → 1 (Hidden Single)
- Row 2 / Column 5 → 6 (Hidden Single)
- Row 7 / Column 3 → 6 (Hidden Single)
- Row 6 / Column 1 → 6 (Hidden Single)
- Row 4 / Column 4 → 3 (Hidden Single)
- Row 8 / Column 2 → 2 (Hidden Single)
- Row 7 / Column 5 → 3 (Hidden Single)
- Row 3 / Column 1 → 7 (Hidden Single)
- Row 2 / Column 8 → 7 (Hidden Single)
- Row 4 / Column 7 → 8 (Hidden Single)
- Row 6 / Column 5 → 1 (Hidden Single)
- Row 5 / Column 1 → 1 (Hidden Single)
- Row 9 / Column 2 → 7 (Hidden Single)
- Row 4 / Column 3 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b2 => r8c4<>5
- Locked Candidates Type 1 (Pointing): 2 in b5 => r5c9<>2
- Locked Candidates Type 1 (Pointing): 4 in b8 => r8c8<>4
- Naked Pair: 8,9 in r3c35 => r3c4<>9
- X-Wing: 8 r27 c69 => r1c9,r89c6<>8
- Swordfish: 4 c378 r169 => r1c29,r6c9<>4
- Row 1 / Column 9 → 5 (Naked Single)
- Row 3 / Column 7 → 2 (Naked Single)
- Row 3 / Column 4 → 5 (Naked Single)
- Row 6 / Column 9 → 2 (Hidden Single)
- Naked Pair: 1,9 in r1c24 => r1c3<>9
- Empty Rectangle: 9 in b4 (r3c35) => r4c5<>9
- Row 4 / Column 5 → 4 (Naked Single)
- Row 2 / Column 2 → 4 (Hidden Single)
- Row 1 / Column 3 → 8 (Naked Single)
- Row 2 / Column 9 → 8 (Naked Single)
- Row 1 / Column 8 → 4 (Full House)
- Row 3 / Column 3 → 9 (Naked Single)
- Row 1 / Column 2 → 1 (Full House)
- Row 3 / Column 5 → 8 (Full House)
- Row 6 / Column 3 → 4 (Full House)
- Row 1 / Column 4 → 9 (Full House)
- Row 8 / Column 5 → 9 (Full House)
- Row 7 / Column 9 → 9 (Naked Single)
- Row 5 / Column 9 → 4 (Full House)
- Row 6 / Column 7 → 5 (Naked Single)
- Row 6 / Column 8 → 9 (Full House)
- Row 9 / Column 7 → 4 (Full House)
- Row 5 / Column 4 → 2 (Naked Single)
- Row 5 / Column 6 → 9 (Full House)
- Row 9 / Column 6 → 5 (Naked Single)
- Row 7 / Column 2 → 5 (Naked Single)
- Row 7 / Column 6 → 8 (Full House)
- Row 4 / Column 2 → 9 (Full House)
- Row 4 / Column 1 → 5 (Full House)
- Row 2 / Column 4 → 1 (Naked Single)
- Row 2 / Column 6 → 2 (Full House)
- Row 8 / Column 6 → 1 (Full House)
- Row 8 / Column 4 → 4 (Full House)
- Row 9 / Column 8 → 8 (Naked Single)
- Row 8 / Column 8 → 5 (Full House)
- Row 8 / Column 1 → 8 (Full House)
- Row 9 / Column 1 → 9 (Full House)
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