Solution for Evil Sudoku #2321769438543
4
3
8
5
2
6
9
7
1
6
5
7
4
1
9
8
2
3
9
1
2
7
8
3
4
6
5
6
1
5
7
4
9
3
8
2
3
7
8
5
6
2
1
9
4
2
4
9
1
3
8
5
7
6
8
9
7
2
5
4
1
6
3
2
3
1
7
8
6
9
4
5
6
5
4
3
9
1
8
2
7
This Sudoku Puzzle has 60 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing), undefined, Naked Pair, Empty Rectangle techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 6 → 9 (Naked Single)
- Row 3 / Column 6 → 3 (Naked Single)
- Row 4 / Column 1 → 6 (Hidden Single)
- Row 6 / Column 9 → 6 (Hidden Single)
- Row 5 / Column 8 → 3 (Hidden Single)
- Row 8 / Column 8 → 9 (Hidden Single)
- Row 5 / Column 4 → 5 (Hidden Single)
- Row 7 / Column 4 → 2 (Hidden Single)
- Row 6 / Column 4 → 1 (Naked Single)
- Row 2 / Column 4 → 4 (Naked Single)
- Row 8 / Column 4 → 7 (Full House)
- Row 6 / Column 5 → 9 (Naked Single)
- Row 6 / Column 3 → 2 (Full House)
- Row 8 / Column 6 → 6 (Hidden Single)
- Row 1 / Column 7 → 9 (Hidden Single)
- Row 5 / Column 3 → 9 (Hidden Single)
- Row 7 / Column 7 → 6 (Hidden Single)
- Row 4 / Column 5 → 7 (Hidden Single)
- Row 9 / Column 2 → 6 (Hidden Single)
- Row 3 / Column 7 → 4 (Hidden Single)
- Row 9 / Column 3 → 3 (Hidden Single)
- Row 1 / Column 2 → 3 (Hidden Single)
- Row 2 / Column 2 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 7 in b9 => r9c1<>7
- X-Wing: 1 r38 c39 => r1c39,r59c9<>1
- Row 5 / Column 7 → 1 (Hidden Single)
- X-Wing: 5 r38 c29 => r1c9<>5
- Naked Pair: 2,8 in r15c9 => r89c9<>8, r9c9<>2
- Row 9 / Column 9 → 7 (Naked Single)
- Row 2 / Column 7 → 7 (Hidden Single)
- Empty Rectangle: 8 in b9 (r2c18) => r9c1<>8
- XY-Wing: 4/5/1 in r8c29,r9c1 => r8c3,r9c8<>1
- Row 8 / Column 9 → 1 (Hidden Single)
- Row 3 / Column 9 → 5 (Naked Single)
- Row 3 / Column 2 → 7 (Naked Single)
- Row 3 / Column 3 → 1 (Full House)
- Row 5 / Column 2 → 4 (Naked Single)
- Row 5 / Column 1 → 7 (Full House)
- Row 8 / Column 2 → 5 (Full House)
- Row 7 / Column 1 → 8 (Naked Single)
- Row 2 / Column 1 → 5 (Naked Single)
- Row 7 / Column 3 → 7 (Naked Single)
- Row 7 / Column 8 → 5 (Full House)
- Row 8 / Column 3 → 4 (Naked Single)
- Row 1 / Column 3 → 8 (Full House)
- Row 1 / Column 1 → 4 (Full House)
- Row 8 / Column 5 → 8 (Full House)
- Row 9 / Column 1 → 1 (Full House)
- Row 9 / Column 5 → 4 (Full House)
- Row 2 / Column 5 → 1 (Naked Single)
- Row 1 / Column 5 → 5 (Full House)
- Row 2 / Column 8 → 8 (Full House)
- Row 1 / Column 9 → 2 (Naked Single)
- Row 1 / Column 8 → 1 (Full House)
- Row 9 / Column 8 → 2 (Full House)
- Row 5 / Column 9 → 8 (Full House)
- Row 9 / Column 7 → 8 (Full House)
- Row 4 / Column 7 → 2 (Full House)
- Row 5 / Column 6 → 2 (Full House)
- Row 4 / Column 6 → 8 (Full House)
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