Solution for Evil Sudoku #2242178359695
6
5
4
2
7
3
9
8
1
1
3
8
5
9
4
7
2
6
9
7
2
1
8
6
4
3
5
4
6
7
1
2
9
8
3
5
8
5
2
6
4
3
9
1
7
3
9
1
8
5
7
2
6
4
7
4
2
3
1
6
5
9
8
3
8
5
4
7
9
2
6
1
6
1
9
5
2
8
7
4
3
This Sudoku Puzzle has 59 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Pair, Locked Triple, Locked Candidates Type 1 (Pointing) techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 4 / Column 6 → 2 (Naked Single)
- Row 6 / Column 6 → 7 (Naked Single)
- Row 6 / Column 4 → 9 (Naked Single)
- Row 4 / Column 4 → 8 (Naked Single)
- Row 5 / Column 5 → 4 (Full House)
- Row 7 / Column 9 → 9 (Hidden Single)
- Row 5 / Column 9 → 7 (Hidden Single)
- Row 3 / Column 4 → 7 (Hidden Single)
- Row 5 / Column 3 → 9 (Hidden Single)
- Locked Pair: 5,8 in r5c78 => r5c12,r6c8<>5
- Locked Triple: 2,3,7 in r2c123 => r1c2,r2c78<>3, r1c12,r2c8,r3c1<>2
- Locked Candidates Type 1 (Pointing): 4 in b2 => r79c6<>4
- Row 7 / Column 6 → 5 (Naked Single)
- Row 9 / Column 8 → 4 (Hidden Single)
- Row 2 / Column 8 → 8 (Naked Single)
- Row 5 / Column 8 → 5 (Naked Single)
- Row 5 / Column 7 → 8 (Naked Single)
- Row 8 / Column 8 → 2 (Naked Single)
- Row 8 / Column 7 → 5 (Naked Single)
- Row 8 / Column 9 → 8 (Naked Single)
- Row 9 / Column 9 → 3 (Full House)
- Row 8 / Column 3 → 6 (Naked Single)
- Locked Candidates Type 1 (Pointing): 6 in b4 => r1c2<>6
- Row 1 / Column 2 → 5 (Naked Single)
- Row 1 / Column 9 → 2 (Naked Single)
- Row 3 / Column 9 → 5 (Full House)
- Row 9 / Column 1 → 5 (Hidden Single)
- Row 9 / Column 3 → 8 (Naked Single)
- Row 7 / Column 3 → 2 (Naked Single)
- Row 9 / Column 5 → 6 (Naked Single)
- Row 9 / Column 6 → 1 (Full House)
- Row 2 / Column 3 → 3 (Naked Single)
- Row 6 / Column 3 → 5 (Full House)
- Row 7 / Column 1 → 7 (Naked Single)
- Row 1 / Column 5 → 3 (Naked Single)
- Row 2 / Column 6 → 4 (Naked Single)
- Row 3 / Column 6 → 6 (Full House)
- Row 8 / Column 4 → 4 (Naked Single)
- Row 8 / Column 2 → 1 (Full House)
- Row 7 / Column 2 → 4 (Full House)
- Row 2 / Column 1 → 2 (Naked Single)
- Row 1 / Column 4 → 1 (Naked Single)
- Row 3 / Column 5 → 2 (Full House)
- Row 7 / Column 5 → 8 (Full House)
- Row 7 / Column 4 → 3 (Full House)
- Row 2 / Column 7 → 1 (Naked Single)
- Row 2 / Column 2 → 7 (Full House)
- Row 3 / Column 1 → 9 (Naked Single)
- Row 1 / Column 1 → 6 (Full House)
- Row 5 / Column 1 → 1 (Full House)
- Row 5 / Column 2 → 2 (Full House)
- Row 1 / Column 7 → 9 (Full House)
- Row 3 / Column 8 → 3 (Naked Single)
- Row 3 / Column 7 → 4 (Full House)
- Row 4 / Column 7 → 3 (Full House)
- Row 6 / Column 8 → 6 (Naked Single)
- Row 4 / Column 8 → 9 (Full House)
- Row 4 / Column 2 → 6 (Full House)
- Row 6 / Column 2 → 3 (Full House)
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