Solution for Evil Sudoku #1283571629492
1
5
4
7
6
9
8
3
2
8
7
3
1
4
2
6
9
5
6
9
2
3
8
5
1
7
4
9
4
1
5
7
8
6
2
3
5
8
6
2
3
4
9
1
7
7
2
3
9
1
6
4
5
8
4
8
6
2
1
5
3
9
7
7
5
1
3
6
9
4
2
8
2
3
9
8
4
7
5
6
1
This Sudoku Puzzle has 71 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Full House, Naked Pair techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 1 / Column 8 → 9 (Hidden Single)
- Row 6 / Column 9 → 8 (Hidden Single)
- Row 8 / Column 6 → 9 (Hidden Single)
- Row 5 / Column 3 → 8 (Hidden Single)
- Row 4 / Column 9 → 3 (Hidden Single)
- Locked Pair: 1,4 in r4c23 => r4c148,r6c13<>1, r4c178,r6c13<>4
- Row 4 / Column 1 → 9 (Naked Single)
- Row 6 / Column 4 → 9 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 2 in b1 => r3c46<>2
- Locked Candidates Type 1 (Pointing): 3 in b4 => r6c56<>3
- Locked Candidates Type 1 (Pointing): 7 in b5 => r6c78<>7
- Locked Candidates Type 1 (Pointing): 1 in b6 => r89c8<>1
- Locked Candidates Type 1 (Pointing): 8 in b8 => r123c6<>8
- Locked Candidates Type 2 (Claiming): 3 in c2 => r1c13,r3c13<>3
- Locked Candidates Type 2 (Claiming): 7 in c9 => r89c8,r9c7<>7
- Locked Pair: 5,6 in r9c78 => r7c7,r9c13<>6, r7c7,r8c8,r9c36<>5
- Row 8 / Column 3 → 5 (Hidden Single)
- Row 8 / Column 9 → 7 (Hidden Single)
- Row 9 / Column 9 → 1 (Full House)
- Row 9 / Column 6 → 8 (Naked Single)
- Row 9 / Column 1 → 3 (Naked Single)
- Row 6 / Column 1 → 6 (Naked Single)
- Row 9 / Column 3 → 7 (Naked Single)
- Row 6 / Column 3 → 3 (Naked Single)
- Locked Candidates Type 1 (Pointing): 1 in b8 => r7c123<>1
- Naked Pair: 1,4 in r48c2 => r2c2<>1, r27c2<>4
- Locked Candidates Type 1 (Pointing): 1 in b1 => r1c456<>1
- Locked Candidates Type 1 (Pointing): 4 in b1 => r1c56<>4
- Locked Pair: 3,7 in r1c56 => r1c7,r2c56,r3c6<>3, r1c7,r3c6<>7
- Row 1 / Column 7 → 6 (Naked Single)
- Row 3 / Column 6 → 5 (Naked Single)
- Row 1 / Column 4 → 8 (Naked Single)
- Row 2 / Column 7 → 3 (Naked Single)
- Row 2 / Column 8 → 8 (Naked Single)
- Row 3 / Column 8 → 7 (Full House)
- Row 9 / Column 7 → 5 (Naked Single)
- Row 9 / Column 8 → 6 (Full House)
- Row 7 / Column 6 → 1 (Naked Single)
- Row 7 / Column 5 → 5 (Full House)
- Row 3 / Column 4 → 6 (Naked Single)
- Row 2 / Column 2 → 6 (Naked Single)
- Row 6 / Column 7 → 4 (Naked Single)
- Row 3 / Column 3 → 2 (Naked Single)
- Row 7 / Column 2 → 8 (Naked Single)
- Row 6 / Column 6 → 7 (Naked Single)
- Row 7 / Column 7 → 2 (Naked Single)
- Row 4 / Column 7 → 7 (Full House)
- Row 8 / Column 8 → 4 (Full House)
- Row 3 / Column 1 → 8 (Naked Single)
- Row 3 / Column 2 → 3 (Full House)
- Row 1 / Column 6 → 3 (Naked Single)
- Row 6 / Column 5 → 1 (Naked Single)
- Row 6 / Column 8 → 5 (Full House)
- Row 7 / Column 1 → 4 (Naked Single)
- Row 7 / Column 3 → 6 (Full House)
- Row 8 / Column 2 → 1 (Naked Single)
- Row 4 / Column 2 → 4 (Full House)
- Row 8 / Column 1 → 2 (Full House)
- Row 1 / Column 1 → 1 (Full House)
- Row 4 / Column 3 → 1 (Full House)
- Row 1 / Column 3 → 4 (Full House)
- Row 1 / Column 5 → 7 (Full House)
- Row 2 / Column 5 → 4 (Naked Single)
- Row 5 / Column 5 → 3 (Full House)
- Row 5 / Column 4 → 2 (Naked Single)
- Row 4 / Column 8 → 2 (Naked Single)
- Row 4 / Column 4 → 5 (Full House)
- Row 2 / Column 4 → 1 (Full House)
- Row 2 / Column 6 → 2 (Full House)
- Row 5 / Column 6 → 4 (Full House)
- Row 5 / Column 8 → 1 (Full House)
Show More...