Solution for Evil Sudoku #1189512473640
7
4
9
5
2
7
4
5
8
1
2
5
9
3
8
5
9
3
1
8
6
8
4
9
1
4
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 → 7 (Naked Single)
- Row 7 / Column 6 → 3 (Naked Single)
- Row 3 / Column 2 → 5 (Hidden Single)
- Row 8 / Column 2 → 6 (Naked Single)
- Row 9 / Column 9 → 5 (Hidden Single)
- Row 9 / Column 1 → 2 (Naked Single)
- Row 7 / Column 1 → 5 (Naked Single)
- Row 9 / Column 3 → 7 (Naked Single)
- Row 7 / Column 3 → 4 (Full House)
- Row 9 / Column 5 → 1 (Naked Single)
- Row 7 / Column 4 → 2 (Naked Single)
- Row 8 / Column 5 → 5 (Full House)
- Row 7 / Column 7 → 7 (Naked Single)
- Row 7 / Column 8 → 8 (Full House)
- Row 2 / Column 5 → 4 (Hidden Single)
- Row 5 / Column 4 → 5 (Hidden Single)
- Row 2 / Column 4 → 1 (Hidden Single)
- Row 2 / Column 2 → 3 (Naked Single)
- Row 1 / Column 2 → 1 (Naked Single)
- Row 1 / Column 9 → 7 (Hidden Single)
- Row 9 / Column 8 → 3 (Hidden Single)
- Row 9 / Column 7 → 6 (Full House)
- Row 6 / Column 3 → 3 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 6 in b2 => r3c39<>6
- Row 2 / Column 8 → 6 (Hidden Single)
- Row 2 / Column 3 → 9 (Full House)
- Naked Triple: 2,3,9 in r138c7 => r4c7<>9, r5c7<>2
- Hidden Pair: 2,9 in r6c59 => r6c9<>6
- Row 4 / Column 9 → 6 (Hidden Single)
- Naked Triple: 1,4,8 in r4c167 => r4c5<>8
- Skyscraper: 8 in r3c3,r4c1 (connected by r34c6) => r1c1,r5c3<>8
- Row 1 / Column 1 → 6 (Naked Single)
- Row 5 / Column 3 → 6 (Naked Single)
- Row 6 / Column 1 → 1 (Naked Single)
- Row 4 / Column 1 → 8 (Full House)
- Uniqueness Test 1: 1/4 in r4c67,r5c67 => r5c6<>1, r5c6<>4
- Row 5 / Column 6 → 8 (Naked Single)
- Row 3 / Column 6 → 6 (Naked Single)
- Row 5 / Column 5 → 2 (Naked Single)
- Row 3 / Column 4 → 3 (Naked Single)
- Row 1 / Column 5 → 8 (Full House)
- Row 6 / Column 6 → 4 (Naked Single)
- Row 4 / Column 6 → 1 (Full House)
- Row 5 / Column 8 → 7 (Naked Single)
- Row 6 / Column 5 → 9 (Naked Single)
- Row 4 / Column 5 → 3 (Full House)
- Row 4 / Column 4 → 7 (Naked Single)
- Row 6 / Column 4 → 6 (Full House)
- Row 1 / Column 3 → 2 (Naked Single)
- Row 1 / Column 7 → 3 (Full House)
- Row 3 / Column 3 → 8 (Full House)
- Row 6 / Column 2 → 7 (Naked Single)
- Row 5 / Column 2 → 4 (Full House)
- Row 6 / Column 9 → 2 (Full House)
- Row 5 / Column 7 → 1 (Full House)
- Row 3 / Column 9 → 9 (Full House)
- Row 3 / Column 7 → 2 (Full House)
- Row 4 / Column 7 → 4 (Naked Single)
- Row 4 / Column 8 → 9 (Full House)
- Row 8 / Column 7 → 9 (Full House)
- Row 8 / Column 8 → 2 (Full House)
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