Solution for Evil Sudoku #2283674215992
1
6
9
4
5
6
5
7
2
5
2
8
7
6
1
5
3
8
7
2
3
1
9
5
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 → 5 (Hidden Single)
- Row 6 / Column 1 → 8 (Hidden Single)
- Row 8 / Column 4 → 5 (Hidden Single)
- Row 5 / Column 7 → 8 (Hidden Single)
- Row 4 / Column 1 → 3 (Hidden Single)
- Locked Pair: 4,9 in r4c78 => r4c269,r6c79<>4, r4c239,r6c79<>9
- Row 4 / Column 9 → 5 (Naked Single)
- Row 6 / Column 6 → 5 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 1 in b3 => r3c46<>1
- Locked Candidates Type 1 (Pointing): 4 in b4 => r89c2<>4
- Locked Candidates Type 1 (Pointing): 7 in b5 => r6c23<>7
- Locked Candidates Type 1 (Pointing): 3 in b6 => r6c45<>3
- Locked Candidates Type 1 (Pointing): 8 in b8 => r123c4<>8
- Locked Candidates Type 2 (Claiming): 7 in c1 => r89c2,r9c3<>7
- Locked Pair: 2,6 in r9c23 => r7c3,r8c2,r9c47<>6, r7c3,r9c79<>2
- Row 8 / Column 7 → 6 (Hidden Single)
- Row 8 / Column 1 → 7 (Hidden Single)
- Row 9 / Column 1 → 4 (Full House)
- Row 9 / Column 4 → 8 (Naked Single)
- Row 9 / Column 9 → 3 (Naked Single)
- Row 6 / Column 9 → 2 (Naked Single)
- Row 9 / Column 7 → 7 (Naked Single)
- Row 6 / Column 7 → 3 (Naked Single)
- Locked Candidates Type 1 (Pointing): 4 in b8 => r7c789<>4
- Naked Pair: 4,9 in r48c8 => r2c8<>4, r27c8<>9
- Locked Candidates Type 1 (Pointing): 4 in b3 => r1c456<>4
- Locked Candidates Type 1 (Pointing): 9 in b3 => r1c45<>9
- Locked Pair: 3,7 in r1c45 => r1c3,r2c45,r3c4<>3, r1c3,r3c4<>7
- Row 1 / Column 3 → 2 (Naked Single)
- Row 3 / Column 4 → 6 (Naked Single)
- Row 1 / Column 6 → 8 (Naked Single)
- Row 2 / Column 2 → 8 (Naked Single)
- Row 2 / Column 3 → 3 (Naked Single)
- Row 3 / Column 2 → 7 (Full House)
- Row 9 / Column 3 → 6 (Naked Single)
- Row 9 / Column 2 → 2 (Full House)
- Row 7 / Column 4 → 4 (Naked Single)
- Row 7 / Column 5 → 6 (Full House)
- Row 3 / Column 6 → 2 (Naked Single)
- Row 2 / Column 8 → 2 (Naked Single)
- Row 6 / Column 3 → 9 (Naked Single)
- Row 3 / Column 7 → 1 (Naked Single)
- Row 7 / Column 8 → 8 (Naked Single)
- Row 6 / Column 4 → 7 (Naked Single)
- Row 7 / Column 3 → 1 (Naked Single)
- Row 4 / Column 3 → 7 (Full House)
- Row 8 / Column 2 → 9 (Full House)
- Row 3 / Column 9 → 8 (Naked Single)
- Row 3 / Column 8 → 3 (Full House)
- Row 1 / Column 4 → 3 (Naked Single)
- Row 6 / Column 5 → 4 (Naked Single)
- Row 6 / Column 2 → 6 (Full House)
- Row 7 / Column 9 → 9 (Naked Single)
- Row 7 / Column 7 → 2 (Full House)
- Row 8 / Column 8 → 4 (Naked Single)
- Row 4 / Column 8 → 9 (Full House)
- Row 8 / Column 9 → 1 (Full House)
- Row 1 / Column 9 → 4 (Full House)
- Row 4 / Column 7 → 4 (Full House)
- Row 1 / Column 7 → 9 (Full House)
- Row 1 / Column 5 → 7 (Full House)
- Row 2 / Column 5 → 9 (Naked Single)
- Row 5 / Column 5 → 3 (Full House)
- Row 5 / Column 6 → 1 (Naked Single)
- Row 4 / Column 2 → 1 (Naked Single)
- Row 4 / Column 6 → 6 (Full House)
- Row 2 / Column 6 → 4 (Full House)
- Row 2 / Column 4 → 1 (Full House)
- Row 5 / Column 2 → 4 (Full House)
- Row 5 / Column 4 → 9 (Full House)
Show More...