Solution for Evil Sudoku #1373713524895
7
1
8
7
7
3
8
1
4
1
3
5
7
2
8
3
4
2
4
5
1
3
7
7
7
3
This Sudoku Puzzle has 63 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Naked Single, Locked Pair, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 1 / Column 5 → 1 (Hidden Single)
- Row 5 / Column 5 → 3 (Hidden Single)
- Row 3 / Column 8 → 7 (Hidden Single)
- Row 6 / Column 2 → 7 (Hidden Single)
- Row 1 / Column 3 → 4 (Hidden Single)
- Row 2 / Column 8 → 3 (Hidden Single)
- Row 1 / Column 2 → 3 (Hidden Single)
- Row 7 / Column 3 → 3 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b1 => r5c1<>5
- Locked Candidates Type 1 (Pointing): 8 in b4 => r79c1<>8
- Locked Candidates Type 1 (Pointing): 4 in b9 => r9c5<>4
- Locked Candidates Type 2 (Claiming): 8 in r9 => r8c9<>8
- Locked Candidates Type 2 (Claiming): 5 in c8 => r8c9<>5
- Naked Triple: 1,6,9 in r4c468 => r4c137<>6, r4c137<>9, r4c7<>1
- Row 4 / Column 3 → 2 (Naked Single)
- Row 4 / Column 7 → 8 (Naked Single)
- Row 4 / Column 1 → 8 (Naked Single)
- Row 9 / Column 9 → 8 (Hidden Single)
- Row 9 / Column 7 → 4 (Hidden Single)
- Row 3 / Column 9 → 4 (Hidden Single)
- Row 6 / Column 7 → 1 (Hidden Single)
- Row 8 / Column 9 → 2 (Hidden Single)
- Row 4 / Column 4 → 1 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 6 in b9 => r4c8<>6
- Row 4 / Column 8 → 9 (Naked Single)
- Row 4 / Column 6 → 6 (Naked Single)
- Row 1 / Column 9 → 9 (Hidden Single)
- Locked Pair: 5,6 in r5c79 => r5c13,r6c9<>6, r5c3,r6c9<>5
- Row 5 / Column 1 → 9 (Naked Single)
- Row 5 / Column 3 → 9 (Naked Single)
- Row 6 / Column 9 → 6 (Naked Single)
- Row 5 / Column 7 → 5 (Naked Single)
- Row 5 / Column 9 → 5 (Naked Single)
- Row 6 / Column 3 → 5 (Naked Single)
- Row 9 / Column 5 → 9 (Hidden Single)
- Row 8 / Column 5 → 6 (Naked Single)
- Row 3 / Column 5 → 2 (Naked Single)
- Row 2 / Column 5 → 4 (Full House)
- Row 7 / Column 5 → 4 (Full House)
- Row 8 / Column 3 → 1 (Naked Single)
- Row 3 / Column 7 → 6 (Naked Single)
- Row 1 / Column 7 → 2 (Full House)
- Row 2 / Column 7 → 2 (Full House)
- Row 8 / Column 8 → 5 (Naked Single)
- Row 9 / Column 3 → 6 (Naked Single)
- Row 3 / Column 2 → 9 (Naked Single)
- Row 8 / Column 4 → 8 (Full House)
- Row 8 / Column 6 → 8 (Full House)
- Row 3 / Column 6 → 5 (Full House)
- Row 8 / Column 2 → 8 (Full House)
- Row 7 / Column 8 → 6 (Naked Single)
- Row 9 / Column 8 → 1 (Full House)
- Row 9 / Column 1 → 2 (Full House)
- Row 7 / Column 1 → 2 (Naked Single)
- Row 2 / Column 2 → 6 (Naked Single)
- Row 2 / Column 6 → 9 (Full House)
- Row 1 / Column 1 → 5 (Full House)
- Row 2 / Column 1 → 5 (Full House)
- Row 2 / Column 4 → 9 (Full House)
- Row 6 / Column 6 → 4 (Full House)
- Row 6 / Column 4 → 4 (Full House)
- Row 7 / Column 2 → 2 (Naked Single)
- Row 7 / Column 4 → 5 (Naked Single)
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