Solution for Evil Sudoku #3493146582792
8
2
5
1
9
3
7
4
6
3
4
9
8
7
6
1
2
5
7
1
6
2
5
4
8
3
9
3
8
4
5
6
2
9
1
7
5
9
1
7
3
8
4
6
2
6
7
2
9
4
1
3
8
5
2
3
8
4
7
9
6
5
1
6
1
4
2
5
3
9
8
7
5
9
7
1
6
8
4
2
3
This Sudoku Puzzle has 70 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 1 / Column 2 → 2 (Hidden Single)
- Row 6 / Column 1 → 9 (Hidden Single)
- Row 8 / Column 4 → 2 (Hidden Single)
- Row 5 / Column 7 → 9 (Hidden Single)
- Row 4 / Column 1 → 3 (Hidden Single)
- Locked Pair: 6,7 in r4c78 => r4c269,r6c79<>6, r4c239,r6c79<>7
- Row 4 / Column 9 → 2 (Naked Single)
- Row 6 / Column 6 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 8 in b3 => r3c46<>8
- Locked Candidates Type 1 (Pointing): 6 in b4 => r89c2<>6
- Locked Candidates Type 1 (Pointing): 4 in b5 => r6c23<>4
- Locked Candidates Type 1 (Pointing): 3 in b6 => r6c45<>3
- Locked Candidates Type 1 (Pointing): 9 in b8 => r123c4<>9
- Locked Candidates Type 2 (Claiming): 4 in c1 => r89c2,r9c3<>4
- Locked Pair: 1,5 in r9c23 => r7c3,r8c2,r9c47<>1, r7c3,r9c79<>5
- Row 8 / Column 7 → 1 (Hidden Single)
- Row 8 / Column 1 → 4 (Hidden Single)
- Row 9 / Column 1 → 6 (Full House)
- Row 9 / Column 4 → 9 (Naked Single)
- Row 9 / Column 9 → 3 (Naked Single)
- Row 6 / Column 9 → 5 (Naked Single)
- Row 9 / Column 7 → 4 (Naked Single)
- Row 6 / Column 7 → 3 (Naked Single)
- Locked Candidates Type 1 (Pointing): 6 in b8 => r7c789<>6
- Naked Pair: 6,7 in r48c8 => r2c8<>6, r27c8<>7
- Locked Candidates Type 1 (Pointing): 6 in b3 => r1c456<>6
- Locked Candidates Type 1 (Pointing): 7 in b3 => r1c45<>7
- Locked Pair: 3,4 in r1c45 => r1c3,r2c45,r3c4<>3, r1c3,r3c4<>4
- Row 1 / Column 3 → 5 (Naked Single)
- Row 3 / Column 4 → 1 (Naked Single)
- Row 1 / Column 6 → 9 (Naked Single)
- Row 2 / Column 2 → 9 (Naked Single)
- Row 2 / Column 3 → 3 (Naked Single)
- Row 3 / Column 2 → 4 (Full House)
- Row 9 / Column 3 → 1 (Naked Single)
- Row 9 / Column 2 → 5 (Full House)
- Row 7 / Column 4 → 6 (Naked Single)
- Row 7 / Column 5 → 1 (Full House)
- Row 3 / Column 6 → 5 (Naked Single)
- Row 2 / Column 8 → 5 (Naked Single)
- Row 6 / Column 3 → 7 (Naked Single)
- Row 3 / Column 7 → 8 (Naked Single)
- Row 7 / Column 8 → 9 (Naked Single)
- Row 6 / Column 4 → 4 (Naked Single)
- Row 7 / Column 3 → 8 (Naked Single)
- Row 4 / Column 3 → 4 (Full House)
- Row 8 / Column 2 → 7 (Full House)
- Row 3 / Column 9 → 9 (Naked Single)
- Row 3 / Column 8 → 3 (Full House)
- Row 1 / Column 4 → 3 (Naked Single)
- Row 6 / Column 5 → 6 (Naked Single)
- Row 6 / Column 2 → 1 (Full House)
- Row 7 / Column 9 → 7 (Naked Single)
- Row 7 / Column 7 → 5 (Full House)
- Row 8 / Column 8 → 6 (Naked Single)
- Row 4 / Column 8 → 7 (Full House)
- Row 8 / Column 9 → 8 (Full House)
- Row 1 / Column 9 → 6 (Full House)
- Row 4 / Column 7 → 6 (Full House)
- Row 1 / Column 7 → 7 (Full House)
- Row 1 / Column 5 → 4 (Full House)
- Row 2 / Column 5 → 7 (Naked Single)
- Row 5 / Column 5 → 3 (Full House)
- Row 5 / Column 6 → 8 (Naked Single)
- Row 4 / Column 2 → 8 (Naked Single)
- Row 4 / Column 6 → 1 (Full House)
- Row 2 / Column 6 → 6 (Full House)
- Row 2 / Column 4 → 8 (Full House)
- Row 5 / Column 2 → 6 (Full House)
- Row 5 / Column 4 → 7 (Full House)
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