Solution for Evil Sudoku #2243897521639
2
4
7
7
6
8
1
6
9
5
1
4
1
4
5
7
4
7
6
2
8
4
9
8
5
8
2
9
This Sudoku Puzzle has 56 steps and it is solved using Hidden Single, Full House, Naked Single, Locked Candidates Type 1 (Pointing), Naked Triple, undefined techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 3 / Column 3 → 6 (Hidden Single)
- Row 2 / Column 8 → 4 (Hidden Single)
- Row 1 / Column 6 → 4 (Hidden Single)
- Row 6 / Column 4 → 8 (Hidden Single)
- Row 4 / Column 3 → 8 (Hidden Single)
- Row 7 / Column 5 → 4 (Hidden Single)
- Row 8 / Column 9 → 4 (Hidden Single)
- Row 9 / Column 6 → 6 (Hidden Single)
- Row 1 / Column 2 → 8 (Hidden Single)
- Row 2 / Column 7 → 7 (Hidden Single)
- Row 6 / Column 2 → 9 (Hidden Single)
- Row 4 / Column 6 → 9 (Hidden Single)
- Row 3 / Column 5 → 1 (Hidden Single)
- Row 7 / Column 6 → 1 (Hidden Single)
- Row 9 / Column 4 → 2 (Hidden Single)
- Row 1 / Column 1 → 9 (Hidden Single)
- Row 2 / Column 6 → 2 (Hidden Single)
- Row 3 / Column 6 → 3 (Full House)
- Row 1 / Column 4 → 5 (Naked Single)
- Row 1 / Column 7 → 3 (Full House)
- Row 3 / Column 4 → 9 (Full House)
- Row 5 / Column 8 → 9 (Hidden Single)
- Row 7 / Column 3 → 9 (Hidden Single)
- Row 5 / Column 2 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 6 in b4 => r7c1<>6
- Naked Triple: 2,3,5 in r4c8,r6c79 => r5c9<>3
- W-Wing: 2/5 in r3c8,r6c7 connected by 5 in r36c9 => r3c7,r4c8<>2
- Row 4 / Column 8 → 3 (Naked Single)
- Row 4 / Column 1 → 6 (Naked Single)
- Row 4 / Column 5 → 2 (Full House)
- Row 6 / Column 9 → 5 (Naked Single)
- Row 9 / Column 8 → 7 (Naked Single)
- Row 6 / Column 5 → 3 (Naked Single)
- Row 6 / Column 7 → 2 (Full House)
- Row 5 / Column 5 → 6 (Full House)
- Row 3 / Column 9 → 8 (Naked Single)
- Row 8 / Column 8 → 5 (Naked Single)
- Row 3 / Column 8 → 2 (Full House)
- Row 3 / Column 7 → 5 (Full House)
- Row 5 / Column 9 → 1 (Naked Single)
- Row 5 / Column 7 → 8 (Full House)
- Row 9 / Column 9 → 3 (Full House)
- Row 9 / Column 3 → 1 (Full House)
- Row 7 / Column 7 → 6 (Naked Single)
- Row 8 / Column 7 → 1 (Full House)
- Row 7 / Column 2 → 3 (Naked Single)
- Row 2 / Column 2 → 1 (Naked Single)
- Row 8 / Column 2 → 6 (Full House)
- Row 7 / Column 4 → 7 (Naked Single)
- Row 7 / Column 1 → 5 (Full House)
- Row 8 / Column 3 → 7 (Full House)
- Row 8 / Column 4 → 3 (Full House)
- Row 2 / Column 1 → 3 (Naked Single)
- Row 2 / Column 3 → 5 (Full House)
- Row 5 / Column 3 → 3 (Full House)
- Row 5 / Column 1 → 7 (Full House)
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