Solution for Evil Sudoku #3247321598692
8
6
9
7
5
2
4
7
8
9
3
2
4
5
8
5
2
8
3
8
1
6
3
9
This Sudoku Puzzle has 71 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Full House, Naked Pair techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 6 → 8 (Hidden Single)
- Row 9 / Column 8 → 8 (Hidden Single)
- Row 4 / Column 9 → 4 (Hidden Single)
- Row 5 / Column 3 → 4 (Hidden Single)
- Row 6 / Column 9 → 7 (Hidden Single)
- Locked Pair: 1,6 in r6c23 => r4c13,r6c148<>1, r4c13,r6c178<>6
- Row 6 / Column 1 → 8 (Naked Single)
- Row 4 / Column 4 → 8 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 4 in b2 => r789c6<>4
- Locked Candidates Type 1 (Pointing): 7 in b4 => r4c56<>7
- Locked Candidates Type 1 (Pointing): 2 in b5 => r4c78<>2
- Locked Candidates Type 1 (Pointing): 1 in b6 => r12c8<>1
- Locked Candidates Type 1 (Pointing): 9 in b7 => r7c46<>9
- Locked Candidates Type 2 (Claiming): 7 in c2 => r7c13,r9c13<>7
- Locked Candidates Type 2 (Claiming): 2 in c9 => r1c78,r2c8<>2
- Locked Pair: 3,5 in r1c78 => r1c13,r3c7<>5, r1c36,r2c8,r3c7<>3
- Row 2 / Column 3 → 3 (Hidden Single)
- Row 2 / Column 9 → 2 (Hidden Single)
- Row 1 / Column 9 → 1 (Full House)
- Row 1 / Column 6 → 4 (Naked Single)
- Row 1 / Column 1 → 7 (Naked Single)
- Row 1 / Column 3 → 2 (Naked Single)
- Row 4 / Column 1 → 5 (Naked Single)
- Row 4 / Column 3 → 7 (Naked Single)
- Locked Candidates Type 1 (Pointing): 1 in b2 => r3c123<>1
- Naked Pair: 1,6 in r26c2 => r38c2<>6, r8c2<>1
- Locked Candidates Type 1 (Pointing): 1 in b7 => r9c456<>1
- Locked Candidates Type 1 (Pointing): 6 in b7 => r9c56<>6
- Locked Pair: 2,7 in r9c56 => r7c6,r9c7<>2, r78c6,r8c5,r9c7<>7
- Row 9 / Column 7 → 5 (Naked Single)
- Row 7 / Column 6 → 3 (Naked Single)
- Row 1 / Column 7 → 3 (Naked Single)
- Row 1 / Column 8 → 5 (Full House)
- Row 8 / Column 7 → 7 (Naked Single)
- Row 8 / Column 8 → 4 (Naked Single)
- Row 7 / Column 8 → 2 (Full House)
- Row 9 / Column 4 → 4 (Naked Single)
- Row 3 / Column 6 → 1 (Naked Single)
- Row 3 / Column 5 → 3 (Full House)
- Row 4 / Column 7 → 6 (Naked Single)
- Row 8 / Column 2 → 5 (Naked Single)
- Row 7 / Column 4 → 5 (Naked Single)
- Row 3 / Column 7 → 9 (Naked Single)
- Row 2 / Column 8 → 6 (Full House)
- Row 6 / Column 7 → 2 (Full House)
- Row 4 / Column 6 → 2 (Naked Single)
- Row 3 / Column 2 → 4 (Naked Single)
- Row 7 / Column 3 → 9 (Naked Single)
- Row 2 / Column 2 → 1 (Naked Single)
- Row 2 / Column 1 → 9 (Full House)
- Row 4 / Column 5 → 1 (Naked Single)
- Row 4 / Column 8 → 3 (Full House)
- Row 9 / Column 6 → 7 (Naked Single)
- Row 3 / Column 1 → 6 (Naked Single)
- Row 3 / Column 3 → 5 (Full House)
- Row 7 / Column 2 → 7 (Naked Single)
- Row 7 / Column 1 → 4 (Full House)
- Row 6 / Column 2 → 6 (Full House)
- Row 9 / Column 1 → 1 (Full House)
- Row 6 / Column 3 → 1 (Full House)
- Row 9 / Column 3 → 6 (Full House)
- Row 9 / Column 5 → 2 (Full House)
- Row 5 / Column 4 → 9 (Naked Single)
- Row 8 / Column 5 → 6 (Naked Single)
- Row 5 / Column 5 → 7 (Full House)
- Row 6 / Column 8 → 9 (Naked Single)
- Row 5 / Column 8 → 1 (Full House)
- Row 5 / Column 6 → 6 (Full House)
- Row 6 / Column 4 → 3 (Full House)
- Row 8 / Column 4 → 1 (Full House)
- Row 8 / Column 6 → 9 (Full House)
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