Solution for Evil Sudoku #4181693742543
8
1
3
4
2
6
5
9
7
6
5
9
3
1
7
4
8
2
2
4
7
9
8
5
1
6
3
3
7
8
2
4
1
9
6
5
2
6
4
8
9
5
7
3
1
5
1
9
3
7
6
8
2
4
7
5
9
1
3
4
6
8
2
1
4
8
9
2
6
5
7
3
6
3
2
7
5
8
4
9
1
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 → 3 (Naked Single)
- Row 3 / Column 4 → 4 (Naked Single)
- Row 6 / Column 1 → 9 (Hidden Single)
- Row 4 / Column 9 → 9 (Hidden Single)
- Row 5 / Column 2 → 4 (Hidden Single)
- Row 5 / Column 6 → 5 (Hidden Single)
- Row 8 / Column 4 → 9 (Hidden Single)
- Row 8 / Column 2 → 3 (Hidden Single)
- Row 7 / Column 6 → 8 (Hidden Single)
- Row 6 / Column 6 → 1 (Naked Single)
- Row 2 / Column 6 → 7 (Naked Single)
- Row 8 / Column 6 → 6 (Full House)
- Row 6 / Column 5 → 3 (Naked Single)
- Row 6 / Column 7 → 8 (Full House)
- Row 1 / Column 3 → 3 (Hidden Single)
- Row 5 / Column 7 → 3 (Hidden Single)
- Row 7 / Column 3 → 9 (Hidden Single)
- Row 4 / Column 5 → 6 (Hidden Single)
- Row 9 / Column 8 → 9 (Hidden Single)
- Row 3 / Column 3 → 7 (Hidden Single)
- Row 9 / Column 7 → 4 (Hidden Single)
- Row 1 / Column 8 → 4 (Hidden Single)
- Row 2 / Column 8 → 8 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 6 in b7 => r9c9<>6
- X-Wing: 1 r38 c17 => r1c17,r59c1<>1
- Row 5 / Column 3 → 1 (Hidden Single)
- X-Wing: 5 r38 c18 => r1c1<>5
- Naked Pair: 2,8 in r15c1 => r89c1<>2, r9c1<>8
- Row 9 / Column 1 → 6 (Naked Single)
- Row 2 / Column 3 → 6 (Hidden Single)
- Empty Rectangle: 2 in b7 (r2c29) => r9c9<>2
- XY-Wing: 5/7/1 in r8c18,r9c9 => r8c7,r9c2<>1
- Row 8 / Column 1 → 1 (Hidden Single)
- Row 3 / Column 1 → 5 (Naked Single)
- Row 3 / Column 8 → 6 (Naked Single)
- Row 3 / Column 7 → 1 (Full House)
- Row 5 / Column 8 → 7 (Naked Single)
- Row 5 / Column 9 → 6 (Full House)
- Row 8 / Column 8 → 5 (Full House)
- Row 7 / Column 9 → 2 (Naked Single)
- Row 2 / Column 9 → 5 (Naked Single)
- Row 7 / Column 2 → 5 (Naked Single)
- Row 7 / Column 7 → 6 (Full House)
- Row 8 / Column 7 → 7 (Naked Single)
- Row 1 / Column 7 → 2 (Full House)
- Row 1 / Column 9 → 7 (Full House)
- Row 8 / Column 5 → 2 (Full House)
- Row 9 / Column 9 → 1 (Full House)
- Row 9 / Column 5 → 7 (Full House)
- Row 2 / Column 5 → 1 (Naked Single)
- Row 1 / Column 5 → 5 (Full House)
- Row 2 / Column 2 → 2 (Full House)
- Row 1 / Column 1 → 8 (Naked Single)
- Row 1 / Column 2 → 1 (Full House)
- Row 9 / Column 2 → 8 (Full House)
- Row 5 / Column 1 → 2 (Full House)
- Row 9 / Column 3 → 2 (Full House)
- Row 4 / Column 3 → 8 (Full House)
- Row 5 / Column 4 → 8 (Full House)
- Row 4 / Column 4 → 2 (Full House)
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