Solution for Evil Sudoku #1143713524895
3
4
7
4
3
1
5
4
2
4
3
8
2
7
5
3
1
4
1
8
3
7
4
8
1
7
This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 5 / Column 5 → 3 (Hidden Single)
- Row 9 / Column 5 → 1 (Hidden Single)
- Row 8 / Column 2 → 3 (Hidden Single)
- Row 7 / Column 3 → 4 (Hidden Single)
- Locked Pair: 6,9 in r46c4 => r278c4,r46c6<>6, r278c4,r46c6<>9
- Row 7 / Column 4 → 5 (Naked Single)
- Row 4 / Column 6 → 1 (Naked Single)
- Row 6 / Column 6 → 1 (Naked Single)
- Row 2 / Column 4 → 8 (Naked Single)
- Row 8 / Column 4 → 8 (Naked Single)
- Row 1 / Column 3 → 1 (Hidden Single)
- Row 3 / Column 8 → 8 (Hidden Single)
- Row 2 / Column 7 → 1 (Hidden Single)
- Row 1 / Column 1 → 8 (Hidden Single)
- Row 3 / Column 7 → 3 (Hidden Single)
- Row 9 / Column 8 → 3 (Hidden Single)
- Row 2 / Column 1 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 6 in b1 => r67c2<>6
- Locked Candidates Type 1 (Pointing): 9 in b1 => r67c2<>9
- Row 6 / Column 2 → 7 (Naked Single)
- Row 7 / Column 2 → 7 (Naked Single)
- Row 4 / Column 8 → 7 (Hidden Single)
- Row 1 / Column 9 → 7 (Hidden Single)
- Row 2 / Column 5 → 7 (Hidden Single)
- Locked Candidates Type 2 (Claiming): 2 in c8 => r89c9,r9c7<>2
- Row 9 / Column 3 → 2 (Hidden Single)
- Naked Triple: 5,6,9 in r4c13,r5c1 => r5c3<>5, r56c3<>6, r56c3<>9
- Row 5 / Column 3 → 8 (Naked Single)
- Row 6 / Column 3 → 8 (Naked Single)
- Naked Triple: 5,6,9 in r45c7,r5c9 => r6c79<>6, r6c79<>9
- Row 6 / Column 7 → 2 (Naked Single)
- Row 6 / Column 9 → 2 (Naked Single)
- Row 6 / Column 4 → 6 (Hidden Single)
- Row 4 / Column 4 → 9 (Naked Single)
- Row 1 / Column 5 → 2 (Hidden Single)
- Row 8 / Column 3 → 9 (Hidden Single)
- Row 7 / Column 1 → 6 (Naked Single)
- Row 8 / Column 5 → 6 (Naked Single)
- Row 7 / Column 5 → 9 (Full House)
- Row 3 / Column 5 → 9 (Full House)
- Row 4 / Column 1 → 5 (Naked Single)
- Row 4 / Column 3 → 6 (Full House)
- Row 4 / Column 7 → 6 (Full House)
- Row 9 / Column 1 → 5 (Naked Single)
- Row 8 / Column 6 → 2 (Naked Single)
- Row 8 / Column 8 → 2 (Naked Single)
- Row 8 / Column 9 → 5 (Naked Single)
- Row 7 / Column 8 → 2 (Naked Single)
- Row 3 / Column 9 → 6 (Naked Single)
- Row 1 / Column 7 → 9 (Full House)
- Row 2 / Column 8 → 9 (Full House)
- Row 1 / Column 2 → 6 (Full House)
- Row 3 / Column 2 → 5 (Full House)
- Row 2 / Column 2 → 5 (Full House)
- Row 5 / Column 1 → 9 (Naked Single)
- Row 9 / Column 7 → 9 (Naked Single)
- Row 5 / Column 9 → 9 (Naked Single)
- Row 3 / Column 6 → 5 (Naked Single)
- Row 9 / Column 9 → 9 (Naked Single)
- Row 5 / Column 7 → 5 (Naked Single)
- Row 2 / Column 6 → 6 (Naked Single)
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