Solution for Evil Sudoku #4167291453843
6
7
1
5
3
2
8
9
4
2
8
9
1
7
4
5
6
3
3
5
4
9
6
8
7
2
1
1
4
6
3
5
7
9
2
8
3
2
5
6
9
8
4
1
7
8
7
9
1
4
2
6
3
5
4
8
9
7
1
5
2
6
3
7
5
6
9
3
2
8
4
1
2
1
3
4
8
6
5
9
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 4 → 1 (Naked Single)
- Row 3 / Column 4 → 5 (Naked Single)
- Row 6 / Column 1 → 9 (Hidden Single)
- Row 4 / Column 9 → 9 (Hidden Single)
- Row 5 / Column 2 → 5 (Hidden Single)
- Row 5 / Column 6 → 8 (Hidden Single)
- Row 8 / Column 4 → 9 (Hidden Single)
- Row 8 / Column 2 → 1 (Hidden Single)
- Row 7 / Column 6 → 6 (Hidden Single)
- Row 6 / Column 6 → 7 (Naked Single)
- Row 2 / Column 6 → 4 (Naked Single)
- Row 8 / Column 6 → 2 (Full House)
- Row 6 / Column 5 → 1 (Naked Single)
- Row 6 / Column 7 → 6 (Full House)
- Row 1 / Column 3 → 1 (Hidden Single)
- Row 5 / Column 7 → 1 (Hidden Single)
- Row 7 / Column 3 → 9 (Hidden Single)
- Row 4 / Column 5 → 2 (Hidden Single)
- Row 9 / Column 8 → 9 (Hidden Single)
- Row 3 / Column 3 → 4 (Hidden Single)
- Row 9 / Column 7 → 5 (Hidden Single)
- Row 1 / Column 8 → 5 (Hidden Single)
- Row 2 / Column 8 → 6 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 2 in b7 => r9c9<>2
- X-Wing: 7 r38 c17 => r1c17,r59c1<>7
- Row 5 / Column 3 → 7 (Hidden Single)
- X-Wing: 8 r38 c18 => r1c1<>8
- Naked Pair: 3,6 in r15c1 => r89c1<>3, r9c1<>6
- Row 9 / Column 1 → 2 (Naked Single)
- Row 2 / Column 3 → 2 (Hidden Single)
- Empty Rectangle: 3 in b7 (r2c29) => r9c9<>3
- XY-Wing: 4/8/7 in r8c18,r9c9 => r8c7,r9c2<>7
- Row 8 / Column 1 → 7 (Hidden Single)
- Row 3 / Column 1 → 8 (Naked Single)
- Row 3 / Column 8 → 2 (Naked Single)
- Row 3 / Column 7 → 7 (Full House)
- Row 5 / Column 8 → 4 (Naked Single)
- Row 5 / Column 9 → 2 (Full House)
- Row 8 / Column 8 → 8 (Full House)
- Row 7 / Column 9 → 3 (Naked Single)
- Row 2 / Column 9 → 8 (Naked Single)
- Row 7 / Column 2 → 8 (Naked Single)
- Row 7 / Column 7 → 2 (Full House)
- Row 8 / Column 7 → 4 (Naked Single)
- Row 1 / Column 7 → 3 (Full House)
- Row 1 / Column 9 → 4 (Full House)
- Row 8 / Column 5 → 3 (Full House)
- Row 9 / Column 9 → 7 (Full House)
- Row 9 / Column 5 → 4 (Full House)
- Row 2 / Column 5 → 7 (Naked Single)
- Row 1 / Column 5 → 8 (Full House)
- Row 2 / Column 2 → 3 (Full House)
- Row 1 / Column 1 → 6 (Naked Single)
- Row 1 / Column 2 → 7 (Full House)
- Row 9 / Column 2 → 6 (Full House)
- Row 5 / Column 1 → 3 (Full House)
- Row 9 / Column 3 → 3 (Full House)
- Row 4 / Column 3 → 6 (Full House)
- Row 5 / Column 4 → 6 (Full House)
- Row 4 / Column 4 → 3 (Full House)
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