Solution for Evil Sudoku #1195467132840
3
1
5
4
7
3
1
4
9
6
7
4
5
2
9
4
5
2
6
9
8
9
1
5
6
1
This Sudoku Puzzle has 61 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing), Naked Triple, Hidden Pair, Skyscraper, Uniqueness Test 1 techniques.
Naked Single
Explanation
Hidden Single
Explanation
Hidden Pair
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 8 / Column 6 → 3 (Naked Single)
- Row 7 / Column 6 → 2 (Naked Single)
- Row 3 / Column 2 → 4 (Hidden Single)
- Row 8 / Column 2 → 8 (Naked Single)
- Row 9 / Column 9 → 4 (Hidden Single)
- Row 9 / Column 1 → 7 (Naked Single)
- Row 7 / Column 1 → 4 (Naked Single)
- Row 9 / Column 3 → 3 (Naked Single)
- Row 7 / Column 3 → 1 (Full House)
- Row 9 / Column 5 → 6 (Naked Single)
- Row 7 / Column 4 → 7 (Naked Single)
- Row 8 / Column 5 → 4 (Full House)
- Row 7 / Column 7 → 3 (Naked Single)
- Row 7 / Column 8 → 9 (Full House)
- Row 2 / Column 5 → 1 (Hidden Single)
- Row 5 / Column 4 → 4 (Hidden Single)
- Row 2 / Column 4 → 6 (Hidden Single)
- Row 2 / Column 2 → 2 (Naked Single)
- Row 1 / Column 2 → 6 (Naked Single)
- Row 1 / Column 9 → 3 (Hidden Single)
- Row 9 / Column 8 → 2 (Hidden Single)
- Row 9 / Column 7 → 8 (Full House)
- Row 6 / Column 3 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 8 in b2 => r3c39<>8
- Row 2 / Column 8 → 8 (Hidden Single)
- Row 2 / Column 3 → 5 (Full House)
- Naked Triple: 2,5,7 in r138c7 => r4c7<>5, r5c7<>7
- Hidden Pair: 5,7 in r6c59 => r6c9<>8
- Row 4 / Column 9 → 8 (Hidden Single)
- Naked Triple: 1,6,9 in r4c167 => r4c5<>9
- Skyscraper: 9 in r3c3,r4c1 (connected by r34c6) => r1c1,r5c3<>9
- Row 1 / Column 1 → 8 (Naked Single)
- Row 5 / Column 3 → 8 (Naked Single)
- Row 6 / Column 1 → 6 (Naked Single)
- Row 4 / Column 1 → 9 (Full House)
- Uniqueness Test 1: 1/6 in r4c67,r5c67 => r5c6<>1, r5c6<>6
- Row 5 / Column 6 → 9 (Naked Single)
- Row 3 / Column 6 → 8 (Naked Single)
- Row 5 / Column 5 → 7 (Naked Single)
- Row 3 / Column 4 → 2 (Naked Single)
- Row 1 / Column 5 → 9 (Full House)
- Row 6 / Column 6 → 1 (Naked Single)
- Row 4 / Column 6 → 6 (Full House)
- Row 5 / Column 8 → 3 (Naked Single)
- Row 6 / Column 5 → 5 (Naked Single)
- Row 4 / Column 5 → 2 (Full House)
- Row 4 / Column 4 → 3 (Naked Single)
- Row 6 / Column 4 → 8 (Full House)
- Row 1 / Column 3 → 7 (Naked Single)
- Row 1 / Column 7 → 2 (Full House)
- Row 3 / Column 3 → 9 (Full House)
- Row 6 / Column 2 → 3 (Naked Single)
- Row 5 / Column 2 → 1 (Full House)
- Row 6 / Column 9 → 7 (Full House)
- Row 5 / Column 7 → 6 (Full House)
- Row 3 / Column 9 → 5 (Full House)
- Row 3 / Column 7 → 7 (Full House)
- Row 4 / Column 7 → 1 (Naked Single)
- Row 4 / Column 8 → 5 (Full House)
- Row 8 / Column 7 → 5 (Full House)
- Row 8 / Column 8 → 7 (Full House)
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