Solution for Evil Sudoku #1275713524895
1
8
3
4
2
7
7
3
7
7
5
2
5
8
7
1
7
3
7
8
1
4
1
5
5
4
This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Pair, Naked Single, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 4 → 7 (Hidden Single)
- Row 4 / Column 8 → 5 (Hidden Single)
- Row 2 / Column 7 → 5 (Hidden Single)
- Row 5 / Column 1 → 1 (Hidden Single)
- Row 7 / Column 1 → 5 (Hidden Single)
- Row 8 / Column 6 → 7 (Hidden Single)
- Row 4 / Column 2 → 8 (Hidden Single)
- Row 3 / Column 2 → 5 (Hidden Single)
- Row 1 / Column 5 → 5 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 1 in b2 => r3c9<>1
- Locked Candidates Type 1 (Pointing): 8 in b2 => r3c9<>8
- Locked Candidates Type 1 (Pointing): 4 in b3 => r5c9<>4
- Locked Candidates Type 1 (Pointing): 8 in b8 => r9c79<>8
- Row 1 / Column 9 → 8 (Hidden Single)
- Row 3 / Column 9 → 4 (Hidden Single)
- Row 1 / Column 1 → 4 (Hidden Single)
- Row 1 / Column 8 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 6 in b3 => r2c23<>6
- Locked Pair: 3,9 in r2c23 => r13c3,r2c89,r3c1<>9
- Row 1 / Column 3 → 6 (Naked Single)
- Row 1 / Column 6 → 9 (Full House)
- Row 3 / Column 1 → 2 (Naked Single)
- Row 3 / Column 3 → 2 (Naked Single)
- Locked Candidates Type 1 (Pointing): 2 in b4 => r89c2<>2
- Row 8 / Column 7 → 2 (Hidden Single)
- Row 6 / Column 2 → 2 (Hidden Single)
- Row 5 / Column 9 → 2 (Hidden Single)
- Row 7 / Column 4 → 2 (Hidden Single)
- Row 8 / Column 8 → 8 (Hidden Single)
- Row 6 / Column 7 → 8 (Hidden Single)
- Row 5 / Column 2 → 4 (Hidden Single)
- Row 6 / Column 6 → 4 (Hidden Single)
- Row 6 / Column 4 → 1 (Hidden Single)
- Row 3 / Column 6 → 1 (Hidden Single)
- Row 6 / Column 8 → 6 (Hidden Single)
- Row 5 / Column 7 → 9 (Full House)
- Row 5 / Column 8 → 9 (Full House)
- Row 2 / Column 8 → 1 (Naked Single)
- Row 2 / Column 9 → 6 (Full House)
- Row 5 / Column 3 → 3 (Naked Single)
- Row 4 / Column 3 → 9 (Full House)
- Row 7 / Column 8 → 1 (Naked Single)
- Row 9 / Column 9 → 9 (Full House)
- Row 7 / Column 9 → 9 (Full House)
- Row 2 / Column 3 → 9 (Naked Single)
- Row 5 / Column 5 → 6 (Naked Single)
- Row 8 / Column 3 → 9 (Naked Single)
- Row 4 / Column 4 → 6 (Naked Single)
- Row 3 / Column 5 → 8 (Full House)
- Row 7 / Column 5 → 3 (Full House)
- Row 3 / Column 4 → 8 (Full House)
- Row 9 / Column 5 → 3 (Full House)
- Row 7 / Column 7 → 6 (Full House)
- Row 9 / Column 7 → 6 (Full House)
- Row 2 / Column 2 → 3 (Naked Single)
- Row 9 / Column 2 → 6 (Full House)
- Row 8 / Column 2 → 6 (Full House)
- Row 4 / Column 6 → 3 (Naked Single)
- Row 7 / Column 6 → 6 (Full House)
- Row 9 / Column 4 → 8 (Naked Single)
- Row 9 / Column 1 → 6 (Naked Single)
- Row 8 / Column 1 → 3 (Naked Single)
Show More...