Solution for Evil Sudoku #1389743516292
6
7
1
4
4
7
6
2
9
4
1
5
8
5
6
8
9
6
6
5
3
2
7
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 6 / Column 2 → 6 (Hidden Single)
- Row 8 / Column 9 → 6 (Hidden Single)
- Row 9 / Column 4 → 8 (Hidden Single)
- Row 3 / Column 5 → 8 (Hidden Single)
- Row 9 / Column 6 → 9 (Hidden Single)
- Locked Pair: 2,3 in r23c6 => r1c46,r3c4,r78c6<>2, r1c46,r3c4,r48c6<>3
- Row 1 / Column 6 → 6 (Naked Single)
- Row 4 / Column 4 → 6 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 9 in b2 => r56c4<>9
- Locked Candidates Type 1 (Pointing): 1 in b3 => r46c7<>1
- Locked Candidates Type 1 (Pointing): 8 in b4 => r6c789<>8
- Locked Candidates Type 1 (Pointing): 4 in b5 => r78c4<>4
- Locked Candidates Type 1 (Pointing): 3 in b8 => r8c12<>3
- Locked Candidates Type 2 (Claiming): 9 in r2 => r1c79,r3c79<>9
- Locked Candidates Type 2 (Claiming): 4 in r9 => r78c1,r8c2<>4
- Locked Pair: 5,7 in r78c1 => r13c1,r7c3<>5, r36c1,r7c3,r8c2<>7
- Row 3 / Column 2 → 7 (Hidden Single)
- Row 3 / Column 1 → 4 (Hidden Single)
- Row 9 / Column 1 → 3 (Naked Single)
- Row 9 / Column 2 → 4 (Full House)
- Row 6 / Column 1 → 8 (Naked Single)
- Row 1 / Column 1 → 9 (Naked Single)
- Row 1 / Column 4 → 5 (Naked Single)
- Row 3 / Column 4 → 9 (Naked Single)
- Locked Candidates Type 1 (Pointing): 3 in b4 => r123c3<>3
- Naked Pair: 2,3 in r2c26 => r2c38<>2, r2c8<>3
- Locked Candidates Type 1 (Pointing): 2 in b3 => r56c9<>2
- Locked Candidates Type 1 (Pointing): 3 in b3 => r456c9<>3
- Locked Pair: 4,9 in r56c9 => r6c7,r7c9<>4, r56c8,r6c7,r7c9<>9
- Row 7 / Column 9 → 5 (Naked Single)
- Row 6 / Column 7 → 7 (Naked Single)
- Row 4 / Column 9 → 8 (Naked Single)
- Row 7 / Column 1 → 7 (Naked Single)
- Row 8 / Column 1 → 5 (Full House)
- Row 7 / Column 8 → 9 (Naked Single)
- Row 8 / Column 8 → 8 (Naked Single)
- Row 8 / Column 7 → 4 (Full House)
- Row 6 / Column 3 → 3 (Naked Single)
- Row 5 / Column 3 → 7 (Full House)
- Row 4 / Column 7 → 5 (Naked Single)
- Row 7 / Column 4 → 2 (Naked Single)
- Row 2 / Column 8 → 5 (Naked Single)
- Row 3 / Column 7 → 1 (Naked Single)
- Row 6 / Column 4 → 4 (Naked Single)
- Row 7 / Column 3 → 1 (Naked Single)
- Row 7 / Column 6 → 4 (Full House)
- Row 8 / Column 2 → 2 (Full House)
- Row 2 / Column 3 → 8 (Naked Single)
- Row 1 / Column 7 → 8 (Naked Single)
- Row 2 / Column 7 → 9 (Full House)
- Row 5 / Column 4 → 3 (Naked Single)
- Row 8 / Column 4 → 7 (Full House)
- Row 6 / Column 9 → 9 (Naked Single)
- Row 2 / Column 2 → 3 (Naked Single)
- Row 1 / Column 2 → 1 (Full House)
- Row 2 / Column 6 → 2 (Full House)
- Row 3 / Column 6 → 3 (Full House)
- Row 1 / Column 3 → 2 (Naked Single)
- Row 1 / Column 9 → 3 (Full House)
- Row 3 / Column 9 → 2 (Full House)
- Row 5 / Column 9 → 4 (Full House)
- Row 3 / Column 3 → 5 (Full House)
- Row 4 / Column 5 → 1 (Naked Single)
- Row 5 / Column 8 → 2 (Naked Single)
- Row 5 / Column 5 → 9 (Full House)
- Row 8 / Column 6 → 1 (Naked Single)
- Row 4 / Column 6 → 7 (Full House)
- Row 4 / Column 8 → 3 (Full House)
- Row 6 / Column 5 → 2 (Full House)
- Row 8 / Column 5 → 3 (Full House)
- Row 6 / Column 8 → 1 (Full House)
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