Solution for Evil Sudoku #2312967435840
7
1
3
5
8
6
9
2
4
4
6
2
1
9
3
7
8
5
8
5
9
2
7
4
3
1
6
6
3
5
2
4
8
1
7
9
8
2
4
9
7
1
3
5
6
1
9
7
6
3
5
4
2
8
4
9
1
3
5
2
8
6
7
5
3
8
6
4
7
2
1
9
7
6
2
9
8
1
5
4
3
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 2 / Column 6 → 3 (Naked Single)
- Row 3 / Column 6 → 5 (Naked Single)
- Row 1 / Column 5 → 6 (Hidden Single)
- Row 3 / Column 8 → 1 (Hidden Single)
- Row 3 / Column 3 → 4 (Hidden Single)
- Row 1 / Column 9 → 9 (Hidden Single)
- Row 7 / Column 2 → 9 (Hidden Single)
- Row 2 / Column 2 → 8 (Naked Single)
- Row 1 / Column 1 → 7 (Naked Single)
- Row 1 / Column 3 → 3 (Naked Single)
- Row 3 / Column 1 → 9 (Full House)
- Row 3 / Column 4 → 7 (Naked Single)
- Row 2 / Column 5 → 9 (Full House)
- Row 3 / Column 7 → 3 (Full House)
- Row 8 / Column 5 → 4 (Hidden Single)
- Row 8 / Column 4 → 6 (Hidden Single)
- Row 8 / Column 2 → 5 (Naked Single)
- Row 9 / Column 2 → 6 (Naked Single)
- Row 5 / Column 4 → 9 (Hidden Single)
- Row 9 / Column 9 → 3 (Hidden Single)
- Row 4 / Column 3 → 5 (Hidden Single)
- Row 1 / Column 8 → 5 (Hidden Single)
- Row 1 / Column 7 → 8 (Full House)
- Locked Candidates Type 1 (Pointing): 8 in b8 => r7c39<>8
- Row 8 / Column 8 → 8 (Hidden Single)
- Row 8 / Column 3 → 2 (Full House)
- Naked Triple: 2,5,7 in r279c7 => r5c7<>7, r6c7<>2
- Hidden Pair: 2,7 in r4c59 => r4c9<>8
- Row 6 / Column 9 → 8 (Hidden Single)
- Naked Triple: 1,4,6 in r6c167 => r6c5<>1
- Skyscraper: 1 in r6c1,r7c3 (connected by r67c6) => r5c3,r9c1<>1
- Row 5 / Column 3 → 8 (Naked Single)
- Row 9 / Column 1 → 8 (Naked Single)
- Row 4 / Column 1 → 6 (Naked Single)
- Row 6 / Column 1 → 1 (Full House)
- Uniqueness Test 1: 4/6 in r5c67,r6c67 => r5c6<>4, r5c6<>6
- Row 5 / Column 6 → 1 (Naked Single)
- Row 5 / Column 5 → 7 (Naked Single)
- Row 7 / Column 6 → 8 (Naked Single)
- Row 4 / Column 5 → 2 (Naked Single)
- Row 5 / Column 8 → 3 (Naked Single)
- Row 4 / Column 6 → 4 (Naked Single)
- Row 6 / Column 6 → 6 (Full House)
- Row 7 / Column 4 → 5 (Naked Single)
- Row 9 / Column 5 → 1 (Full House)
- Row 6 / Column 5 → 5 (Full House)
- Row 4 / Column 9 → 7 (Naked Single)
- Row 7 / Column 9 → 2 (Full House)
- Row 5 / Column 2 → 4 (Naked Single)
- Row 4 / Column 2 → 3 (Full House)
- Row 5 / Column 7 → 6 (Full House)
- Row 4 / Column 4 → 8 (Full House)
- Row 6 / Column 4 → 3 (Full House)
- Row 6 / Column 8 → 2 (Naked Single)
- Row 6 / Column 7 → 4 (Full House)
- Row 2 / Column 8 → 7 (Full House)
- Row 2 / Column 7 → 2 (Full House)
- Row 9 / Column 3 → 7 (Naked Single)
- Row 7 / Column 3 → 1 (Full House)
- Row 7 / Column 7 → 7 (Full House)
- Row 9 / Column 7 → 5 (Full House)
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