Solution for Evil Sudoku #1169842351796
5
3
4
9
1
8
5
3
3
4
7
6
1
6
5
9
3
9
8
6
8
7
5
2
This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Candidates Type 1 (Pointing), Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 3 / Column 4 → 5 (Hidden Single)
- Row 2 / Column 1 → 3 (Hidden Single)
- Row 1 / Column 6 → 8 (Hidden Single)
- Row 6 / Column 2 → 6 (Hidden Single)
- Row 8 / Column 7 → 5 (Hidden Single)
- Row 8 / Column 5 → 1 (Hidden Single)
- Row 2 / Column 5 → 6 (Hidden Single)
- Row 9 / Column 4 → 9 (Hidden Single)
- Row 1 / Column 4 → 1 (Hidden Single)
- Row 2 / Column 3 → 4 (Hidden Single)
- Row 2 / Column 2 → 9 (Hidden Single)
- Row 5 / Column 3 → 9 (Hidden Single)
- Row 4 / Column 5 → 9 (Hidden Single)
- Locked Pair: 1,7 in r9c23 => r7c13,r9c19<>1, r9c79<>7
- Row 9 / Column 1 → 4 (Naked Single)
- Locked Candidates Type 1 (Pointing): 3 in b5 => r6c9<>3
- Locked Candidates Type 1 (Pointing): 7 in b5 => r4c78<>7
- Locked Pair: 1,4 in r46c8 => r178c8,r4c7,r6c9<>4, r6c9,r7c8<>1
- Row 8 / Column 8 → 7 (Naked Single)
- Row 7 / Column 9 → 1 (Hidden Single)
- Row 7 / Column 8 → 9 (Hidden Single)
- Row 1 / Column 8 → 6 (Naked Single)
- Row 1 / Column 1 → 2 (Naked Single)
- Row 1 / Column 3 → 7 (Naked Single)
- Row 5 / Column 1 → 8 (Naked Single)
- Row 7 / Column 1 → 5 (Naked Single)
- Row 1 / Column 7 → 4 (Naked Single)
- Row 1 / Column 9 → 9 (Full House)
- Row 3 / Column 2 → 1 (Naked Single)
- Row 9 / Column 3 → 1 (Naked Single)
- Row 5 / Column 5 → 2 (Naked Single)
- Row 6 / Column 5 → 8 (Full House)
- Row 4 / Column 1 → 1 (Naked Single)
- Row 3 / Column 1 → 6 (Full House)
- Row 3 / Column 3 → 8 (Full House)
- Row 7 / Column 3 → 2 (Naked Single)
- Row 9 / Column 2 → 7 (Full House)
- Row 4 / Column 2 → 2 (Full House)
- Row 6 / Column 3 → 5 (Full House)
- Row 7 / Column 7 → 6 (Naked Single)
- Row 7 / Column 6 → 4 (Full House)
- Row 6 / Column 9 → 2 (Naked Single)
- Row 4 / Column 8 → 4 (Naked Single)
- Row 6 / Column 8 → 1 (Full House)
- Row 4 / Column 7 → 8 (Naked Single)
- Row 6 / Column 6 → 3 (Naked Single)
- Row 6 / Column 4 → 4 (Full House)
- Row 3 / Column 9 → 7 (Naked Single)
- Row 3 / Column 7 → 2 (Full House)
- Row 4 / Column 4 → 7 (Naked Single)
- Row 4 / Column 6 → 5 (Full House)
- Row 9 / Column 7 → 3 (Naked Single)
- Row 5 / Column 7 → 7 (Full House)
- Row 5 / Column 9 → 3 (Full House)
- Row 8 / Column 6 → 2 (Naked Single)
- Row 9 / Column 6 → 6 (Naked Single)
- Row 9 / Column 9 → 8 (Full House)
- Row 8 / Column 9 → 4 (Full House)
- Row 2 / Column 6 → 7 (Full House)
- Row 2 / Column 4 → 2 (Full House)
- Row 8 / Column 4 → 3 (Full House)
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