Solution for Evil Sudoku #1274713524895
5
1
5
8
3
9
2
4
6
3
8
9
7
4
2
1
5
5
7
2
4
5
6
6
7
3
8
7
8
3
1
2
3
7
2
4
9
2
6
5
6
8
9
7
1
1
5
7
4
9
9
8
8
3
4
7
8
9
6
2
3
5
1
2
9
3
4
1
7
8
9
4
6
1
1
3
8
5
2
4
2
This Sudoku Puzzle has 68 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Pair, Full House, Naked Single, Locked Candidates Type 2 (Claiming) techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 4 → 7 (Hidden Single)
- Row 5 / Column 1 → 1 (Hidden Single)
- Row 3 / Column 2 → 4 (Hidden Single)
- Row 7 / Column 1 → 4 (Hidden Single)
- Row 8 / Column 6 → 7 (Hidden Single)
- Row 5 / Column 7 → 4 (Hidden Single)
- Row 1 / Column 9 → 4 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 1 in b2 => r3c9<>1
- Locked Candidates Type 1 (Pointing): 5 in b7 => r9c5<>5
- Locked Candidates Type 1 (Pointing): 8 in b8 => r9c79<>8
- Row 3 / Column 9 → 8 (Hidden Single)
- Row 1 / Column 5 → 8 (Hidden Single)
- Row 9 / Column 4 → 8 (Hidden Single)
- Row 1 / Column 8 → 2 (Hidden Single)
- Row 7 / Column 4 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b3 => r2c23<>5
- Locked Candidates Type 1 (Pointing): 6 in b3 => r2c23<>6
- Locked Pair: 3,9 in r2c23 => r1c13,r2c789,r3c13<>9
- Row 1 / Column 6 → 9 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b2 => r3c13<>5
- Locked Pair: 2,6 in r3c13 => r1c13,r3c456<>6
- Row 1 / Column 1 → 5 (Full House)
- Row 1 / Column 3 → 5 (Full House)
- Row 3 / Column 4 → 1 (Naked Single)
- Row 3 / Column 5 → 5 (Full House)
- Row 3 / Column 6 → 5 (Full House)
- Row 9 / Column 2 → 5 (Hidden Single)
- Row 6 / Column 6 → 1 (Hidden Single)
- Row 4 / Column 8 → 5 (Hidden Single)
- Row 2 / Column 7 → 5 (Hidden Single)
- Row 4 / Column 2 → 8 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 9 in b8 => r5c5<>9
- Locked Candidates Type 2 (Claiming): 3 in c1 => r8c23<>3
- Locked Candidates Type 2 (Claiming): 9 in c1 => r8c23<>9
- Locked Pair: 2,6 in r8c23 => r8c17,r9c1<>2, r8c178,r9c1<>6
- Row 3 / Column 1 → 2 (Hidden Single)
- Row 3 / Column 3 → 6 (Naked Single)
- Row 8 / Column 3 → 2 (Naked Single)
- Row 8 / Column 2 → 6 (Naked Single)
- Locked Pair: 3,9 in r45c3 => r2c3,r5c2<>3, r2c3,r56c2<>9
- Row 2 / Column 3 → 9 (Naked Single)
- Row 5 / Column 2 → 2 (Naked Single)
- Row 6 / Column 2 → 2 (Naked Single)
- Row 2 / Column 2 → 3 (Naked Single)
- Row 4 / Column 3 → 3 (Naked Single)
- Row 5 / Column 3 → 3 (Naked Single)
- Row 4 / Column 6 → 6 (Naked Single)
- Row 4 / Column 4 → 9 (Full House)
- Row 6 / Column 4 → 9 (Full House)
- Row 5 / Column 5 → 6 (Naked Single)
- Row 7 / Column 6 → 3 (Naked Single)
- Row 7 / Column 5 → 9 (Full House)
- Row 9 / Column 5 → 9 (Full House)
- Row 5 / Column 8 → 9 (Naked Single)
- Row 5 / Column 9 → 9 (Naked Single)
- Row 7 / Column 7 → 6 (Naked Single)
- Row 7 / Column 8 → 1 (Full House)
- Row 7 / Column 9 → 1 (Full House)
- Row 2 / Column 8 → 6 (Full House)
- Row 8 / Column 8 → 8 (Full House)
- Row 2 / Column 9 → 6 (Full House)
- Row 6 / Column 8 → 8 (Full House)
- Row 9 / Column 1 → 3 (Naked Single)
- Row 8 / Column 1 → 9 (Full House)
- Row 8 / Column 7 → 3 (Full House)
- Row 6 / Column 7 → 8 (Naked Single)
- Row 9 / Column 9 → 2 (Naked Single)
- Row 9 / Column 7 → 2 (Naked Single)
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