Solution for Evil Sudoku #2174523981639
5
8
9
7
6
4
1
3
2
1
3
6
2
8
9
7
4
5
7
4
2
3
1
5
6
9
8
8
4
3
9
2
7
6
5
1
5
7
1
4
6
8
3
9
2
2
6
9
1
5
3
4
8
7
2
1
6
3
9
5
4
7
8
8
5
7
6
2
4
9
1
3
9
3
4
8
7
1
5
2
6
This Sudoku Puzzle has 56 steps and it is solved using Hidden Single, Full House, Locked Candidates Type 1 (Pointing), Naked Triple, undefined, Naked Single techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 5 / Column 3 → 7 (Hidden Single)
- Row 4 / Column 4 → 5 (Hidden Single)
- Row 3 / Column 6 → 5 (Hidden Single)
- Row 3 / Column 7 → 6 (Hidden Single)
- Row 9 / Column 2 → 7 (Hidden Single)
- Row 6 / Column 9 → 7 (Hidden Single)
- Row 8 / Column 8 → 7 (Hidden Single)
- Row 5 / Column 7 → 1 (Hidden Single)
- Row 2 / Column 4 → 2 (Hidden Single)
- Row 6 / Column 6 → 2 (Hidden Single)
- Row 2 / Column 9 → 5 (Hidden Single)
- Row 6 / Column 1 → 6 (Hidden Single)
- Row 7 / Column 8 → 3 (Hidden Single)
- Row 1 / Column 9 → 2 (Hidden Single)
- Row 3 / Column 3 → 2 (Hidden Single)
- Row 8 / Column 5 → 2 (Hidden Single)
- Row 2 / Column 5 → 8 (Hidden Single)
- Row 4 / Column 7 → 2 (Hidden Single)
- Row 6 / Column 3 → 1 (Hidden Single)
- Row 4 / Column 1 → 8 (Hidden Single)
- Row 6 / Column 8 → 8 (Hidden Single)
- Row 6 / Column 7 → 4 (Full House)
- Row 4 / Column 9 → 9 (Full House)
- Row 7 / Column 9 → 4 (Full House)
- Locked Candidates Type 1 (Pointing): 6 in b2 => r1c3<>6
- Naked Triple: 4,8,9 in r79c4,r8c6 => r9c5<>4
- W-Wing: 8/9 in r7c4,r8c7 connected by 9 in r9c47 => r7c7,r8c6<>8
- Row 8 / Column 6 → 4 (Naked Single)
- Row 1 / Column 6 → 6 (Naked Single)
- Row 5 / Column 6 → 8 (Full House)
- Row 8 / Column 1 → 3 (Naked Single)
- Row 9 / Column 4 → 9 (Naked Single)
- Row 5 / Column 4 → 4 (Naked Single)
- Row 7 / Column 4 → 8 (Full House)
- Row 5 / Column 5 → 6 (Full House)
- Row 8 / Column 2 → 9 (Naked Single)
- Row 8 / Column 7 → 8 (Full House)
- Row 9 / Column 7 → 5 (Naked Single)
- Row 7 / Column 7 → 9 (Full House)
- Row 7 / Column 3 → 6 (Naked Single)
- Row 9 / Column 5 → 1 (Naked Single)
- Row 7 / Column 5 → 5 (Full House)
- Row 7 / Column 2 → 1 (Full House)
- Row 9 / Column 1 → 4 (Full House)
- Row 3 / Column 1 → 1 (Full House)
- Row 2 / Column 3 → 4 (Naked Single)
- Row 2 / Column 2 → 6 (Naked Single)
- Row 2 / Column 8 → 1 (Full House)
- Row 3 / Column 2 → 3 (Naked Single)
- Row 1 / Column 3 → 9 (Full House)
- Row 4 / Column 3 → 3 (Full House)
- Row 4 / Column 2 → 4 (Full House)
- Row 3 / Column 5 → 4 (Naked Single)
- Row 1 / Column 5 → 3 (Full House)
- Row 1 / Column 8 → 4 (Full House)
- Row 3 / Column 8 → 9 (Full House)
Show More...