Solution for Evil Sudoku #2364398175240
8
6
7
5
2
9
3
4
1
1
9
4
6
3
7
8
2
5
2
5
3
4
8
1
7
6
9
9
7
5
4
1
2
6
8
3
2
4
1
3
8
6
7
5
9
6
3
8
9
7
5
1
4
2
1
3
6
7
5
4
2
9
8
5
7
2
9
1
8
4
6
3
8
9
4
3
2
6
5
1
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 2 / Column 6 → 7 (Naked Single)
- Row 3 / Column 6 → 5 (Naked Single)
- Row 1 / Column 5 → 9 (Hidden Single)
- Row 3 / Column 8 → 6 (Hidden Single)
- Row 3 / Column 3 → 1 (Hidden Single)
- Row 1 / Column 9 → 3 (Hidden Single)
- Row 7 / Column 2 → 3 (Hidden Single)
- Row 2 / Column 2 → 2 (Naked Single)
- Row 1 / Column 1 → 8 (Naked Single)
- Row 1 / Column 3 → 7 (Naked Single)
- Row 3 / Column 1 → 3 (Full House)
- Row 3 / Column 4 → 8 (Naked Single)
- Row 2 / Column 5 → 3 (Full House)
- Row 3 / Column 7 → 7 (Full House)
- Row 8 / Column 5 → 1 (Hidden Single)
- Row 8 / Column 4 → 9 (Hidden Single)
- Row 8 / Column 2 → 5 (Naked Single)
- Row 9 / Column 2 → 9 (Naked Single)
- Row 5 / Column 4 → 3 (Hidden Single)
- Row 9 / Column 9 → 7 (Hidden Single)
- Row 4 / Column 3 → 5 (Hidden Single)
- Row 1 / Column 8 → 5 (Hidden Single)
- Row 1 / Column 7 → 2 (Full House)
- Locked Candidates Type 1 (Pointing): 2 in b8 => r7c39<>2
- Row 8 / Column 8 → 2 (Hidden Single)
- Row 8 / Column 3 → 4 (Full House)
- Naked Triple: 4,5,8 in r279c7 => r5c7<>8, r6c7<>4
- Hidden Pair: 4,8 in r4c59 => r4c9<>2
- Row 6 / Column 9 → 2 (Hidden Single)
- Naked Triple: 1,6,9 in r6c167 => r6c5<>6
- Skyscraper: 6 in r6c1,r7c3 (connected by r67c6) => r5c3,r9c1<>6
- Row 5 / Column 3 → 2 (Naked Single)
- Row 9 / Column 1 → 2 (Naked Single)
- Row 4 / Column 1 → 9 (Naked Single)
- Row 6 / Column 1 → 6 (Full House)
- Uniqueness Test 1: 1/9 in r5c67,r6c67 => r5c6<>1, r5c6<>9
- Row 5 / Column 6 → 6 (Naked Single)
- Row 5 / Column 5 → 8 (Naked Single)
- Row 7 / Column 6 → 2 (Naked Single)
- Row 4 / Column 5 → 4 (Naked Single)
- Row 5 / Column 8 → 7 (Naked Single)
- Row 4 / Column 6 → 1 (Naked Single)
- Row 6 / Column 6 → 9 (Full House)
- Row 7 / Column 4 → 5 (Naked Single)
- Row 9 / Column 5 → 6 (Full House)
- Row 6 / Column 5 → 5 (Full House)
- Row 4 / Column 9 → 8 (Naked Single)
- Row 7 / Column 9 → 4 (Full House)
- Row 5 / Column 2 → 1 (Naked Single)
- Row 4 / Column 2 → 7 (Full House)
- Row 5 / Column 7 → 9 (Full House)
- Row 4 / Column 4 → 2 (Full House)
- Row 6 / Column 4 → 7 (Full House)
- Row 6 / Column 8 → 4 (Naked Single)
- Row 6 / Column 7 → 1 (Full House)
- Row 2 / Column 8 → 8 (Full House)
- Row 2 / Column 7 → 4 (Full House)
- Row 9 / Column 3 → 8 (Naked Single)
- Row 7 / Column 3 → 6 (Full House)
- Row 7 / Column 7 → 8 (Full House)
- Row 9 / Column 7 → 5 (Full House)
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