Solution for Evil Sudoku #1134568712940
1
7
4
5
8
1
7
5
3
6
8
5
4
2
3
5
4
2
6
3
9
3
7
4
6
7
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 → 1 (Naked Single)
- Row 7 / Column 6 → 2 (Naked Single)
- Row 3 / Column 2 → 5 (Hidden Single)
- Row 8 / Column 2 → 9 (Naked Single)
- Row 9 / Column 9 → 5 (Hidden Single)
- Row 9 / Column 1 → 8 (Naked Single)
- Row 7 / Column 1 → 5 (Naked Single)
- Row 9 / Column 3 → 1 (Naked Single)
- Row 7 / Column 3 → 7 (Full House)
- Row 9 / Column 5 → 6 (Naked Single)
- Row 7 / Column 4 → 8 (Naked Single)
- Row 8 / Column 5 → 5 (Full House)
- Row 7 / Column 7 → 1 (Naked Single)
- Row 7 / Column 8 → 3 (Full House)
- Row 2 / Column 5 → 7 (Hidden Single)
- Row 5 / Column 4 → 5 (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 → 1 (Hidden Single)
- Row 9 / Column 8 → 2 (Hidden Single)
- Row 9 / Column 7 → 9 (Full House)
- Row 6 / Column 3 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 9 in b2 => r3c39<>9
- Row 2 / Column 8 → 9 (Hidden Single)
- Row 2 / Column 3 → 4 (Full House)
- Naked Triple: 2,4,8 in r138c7 => r4c7<>4, r5c7<>8
- Hidden Pair: 4,8 in r6c59 => r6c9<>9
- Row 4 / Column 9 → 9 (Hidden Single)
- Naked Triple: 3,6,7 in r4c167 => r4c5<>3
- Skyscraper: 3 in r3c3,r4c1 (connected by r34c6) => r1c1,r5c3<>3
- Row 1 / Column 1 → 9 (Naked Single)
- Row 5 / Column 3 → 9 (Naked Single)
- Row 6 / Column 1 → 6 (Naked Single)
- Row 4 / Column 1 → 3 (Full House)
- Uniqueness Test 1: 6/7 in r4c67,r5c67 => r5c6<>6, r5c6<>7
- Row 5 / Column 6 → 3 (Naked Single)
- Row 3 / Column 6 → 9 (Naked Single)
- Row 5 / Column 5 → 8 (Naked Single)
- Row 3 / Column 4 → 2 (Naked Single)
- Row 1 / Column 5 → 3 (Full House)
- Row 6 / Column 6 → 7 (Naked Single)
- Row 4 / Column 6 → 6 (Full House)
- Row 5 / Column 8 → 1 (Naked Single)
- Row 6 / Column 5 → 4 (Naked Single)
- Row 4 / Column 5 → 2 (Full House)
- Row 4 / Column 4 → 1 (Naked Single)
- Row 6 / Column 4 → 9 (Full House)
- Row 1 / Column 3 → 8 (Naked Single)
- Row 1 / Column 7 → 2 (Full House)
- Row 3 / Column 3 → 3 (Full House)
- Row 6 / Column 2 → 1 (Naked Single)
- Row 5 / Column 2 → 7 (Full House)
- Row 6 / Column 9 → 8 (Full House)
- Row 5 / Column 7 → 6 (Full House)
- Row 3 / Column 9 → 4 (Full House)
- Row 3 / Column 7 → 8 (Full House)
- Row 4 / Column 7 → 7 (Naked Single)
- Row 4 / Column 8 → 4 (Full House)
- Row 8 / Column 7 → 4 (Full House)
- Row 8 / Column 8 → 8 (Full House)
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