Solution for Evil Sudoku #3195146238743
2
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8
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9
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9
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1
This Sudoku Puzzle has 60 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing), undefined, Naked Pair, Empty Rectangle techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 6 → 6 (Naked Single)
- Row 3 / Column 6 → 3 (Naked Single)
- Row 4 / Column 1 → 4 (Hidden Single)
- Row 6 / Column 9 → 4 (Hidden Single)
- Row 5 / Column 8 → 3 (Hidden Single)
- Row 8 / Column 8 → 6 (Hidden Single)
- Row 5 / Column 4 → 7 (Hidden Single)
- Row 8 / Column 6 → 4 (Hidden Single)
- Row 7 / Column 4 → 9 (Hidden Single)
- Row 6 / Column 4 → 5 (Naked Single)
- Row 2 / Column 4 → 2 (Naked Single)
- Row 8 / Column 4 → 1 (Full House)
- Row 6 / Column 5 → 6 (Naked Single)
- Row 6 / Column 3 → 9 (Full House)
- Row 1 / Column 7 → 6 (Hidden Single)
- Row 5 / Column 3 → 6 (Hidden Single)
- Row 7 / Column 7 → 4 (Hidden Single)
- Row 4 / Column 5 → 1 (Hidden Single)
- Row 9 / Column 2 → 4 (Hidden Single)
- Row 3 / Column 7 → 2 (Hidden Single)
- Row 9 / Column 3 → 3 (Hidden Single)
- Row 1 / Column 2 → 3 (Hidden Single)
- Row 2 / Column 2 → 9 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 1 in b9 => r9c1<>1
- X-Wing: 5 r38 c39 => r1c39,r59c9<>5
- Row 5 / Column 7 → 5 (Hidden Single)
- X-Wing: 7 r38 c29 => r1c9<>7
- Naked Pair: 8,9 in r15c9 => r89c9<>8, r9c9<>9
- Row 9 / Column 9 → 1 (Naked Single)
- Row 2 / Column 7 → 1 (Hidden Single)
- Empty Rectangle: 8 in b9 (r2c18) => r9c1<>8
- XY-Wing: 2/7/5 in r8c29,r9c1 => r8c3,r9c8<>5
- Row 8 / Column 9 → 5 (Hidden Single)
- Row 3 / Column 9 → 7 (Naked Single)
- Row 3 / Column 2 → 1 (Naked Single)
- Row 3 / Column 3 → 5 (Full House)
- Row 5 / Column 2 → 2 (Naked Single)
- Row 5 / Column 1 → 1 (Full House)
- Row 8 / Column 2 → 7 (Full House)
- Row 7 / Column 1 → 8 (Naked Single)
- Row 2 / Column 1 → 7 (Naked Single)
- Row 7 / Column 3 → 1 (Naked Single)
- Row 7 / Column 8 → 7 (Full House)
- Row 8 / Column 3 → 2 (Naked Single)
- Row 1 / Column 3 → 8 (Full House)
- Row 1 / Column 1 → 2 (Full House)
- Row 8 / Column 5 → 8 (Full House)
- Row 9 / Column 1 → 5 (Full House)
- Row 9 / Column 5 → 2 (Full House)
- Row 2 / Column 5 → 5 (Naked Single)
- Row 1 / Column 5 → 7 (Full House)
- Row 2 / Column 8 → 8 (Full House)
- Row 1 / Column 9 → 9 (Naked Single)
- Row 1 / Column 8 → 5 (Full House)
- Row 9 / Column 8 → 9 (Full House)
- Row 5 / Column 9 → 8 (Full House)
- Row 9 / Column 7 → 8 (Full House)
- Row 4 / Column 7 → 9 (Full House)
- Row 5 / Column 6 → 9 (Full House)
- Row 4 / Column 6 → 8 (Full House)
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