6
1
7
9
9
7
6
2
4
7
6
7
1
3
5
8
7
9
7
2
3
6
9
7
4
9
6
9
6
3
8
5
This Sudoku Puzzle has 63 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, undefined, Naked Pair, Skyscraper, Full House, Empty Rectangle techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 5 / Column 3 → 4 (Naked Single)
- Row 2 / Column 8 → 9 (Hidden Single)
- Row 6 / Column 2 → 9 (Hidden Single)
- Row 5 / Column 6 → 9 (Hidden Single)
- Row 1 / Column 8 → 2 (Hidden Single)
- Row 3 / Column 8 → 3 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 4 in b1 => r8c1<>4
- Locked Candidates Type 1 (Pointing): 1 in b2 => r469c4<>1
- Locked Candidates Type 1 (Pointing): 8 in b2 => r9c4<>8
- Locked Candidates Type 1 (Pointing): 5 in b6 => r13c7<>5
- Locked Candidates Type 2 (Claiming): 1 in c8 => r4c7,r6c9<>1
- Locked Candidates Type 2 (Claiming): 4 in c8 => r4c7,r6c9<>4
- Naked Triple: 2,5,8 in r347c2 => r89c2<>2, r8c2<>5, r9c2<>8
- Locked Candidates Type 1 (Pointing): 5 in b7 => r7c6<>5
- W-Wing: 8/2 in r6c3,r7c1 connected by 2 in r2c13 => r79c3<>8
- Row 9 / Column 6 → 8 (Hidden Single)
- Naked Pair: 1,2 in r67c6 => r48c6<>1, r48c6<>2
- Skyscraper: 2 in r4c2,r6c6 (connected by r7c26) => r4c4,r6c3<>2
- Row 6 / Column 3 → 8 (Naked Single)
- Row 4 / Column 2 → 2 (Full House)
- Row 6 / Column 9 → 6 (Naked Single)
- Row 5 / Column 7 → 5 (Naked Single)
- Row 5 / Column 4 → 6 (Full House)
- Row 4 / Column 7 → 8 (Naked Single)
- Row 3 / Column 7 → 6 (Hidden Single)
- Empty Rectangle: 3 in b2 (r9c34) => r2c3<>3
- W-Wing: 3/5 in r2c5,r4c6 connected by 5 in r8c56 => r4c5<>3
- W-Wing: 3/2 in r8c1,r9c4 connected by 2 in r89c7 => r8c56,r9c3<>3
- Row 8 / Column 6 → 5 (Naked Single)
- Row 4 / Column 6 → 3 (Naked Single)
- Row 8 / Column 5 → 1 (Naked Single)
- Row 4 / Column 5 → 5 (Naked Single)
- Row 2 / Column 5 → 3 (Full House)
- Row 7 / Column 6 → 2 (Naked Single)
- Row 6 / Column 6 → 1 (Full House)
- Row 9 / Column 4 → 3 (Full House)
- Row 4 / Column 4 → 4 (Naked Single)
- Row 4 / Column 8 → 1 (Full House)
- Row 6 / Column 8 → 4 (Full House)
- Row 6 / Column 4 → 2 (Full House)
- Row 7 / Column 1 → 8 (Naked Single)
- Row 7 / Column 2 → 5 (Naked Single)
- Row 7 / Column 3 → 1 (Full House)
- Row 3 / Column 2 → 8 (Naked Single)
- Row 9 / Column 3 → 2 (Naked Single)
- Row 2 / Column 3 → 5 (Naked Single)
- Row 1 / Column 3 → 3 (Full House)
- Row 8 / Column 1 → 3 (Naked Single)
- Row 2 / Column 4 → 8 (Naked Single)
- Row 1 / Column 1 → 4 (Naked Single)
- Row 2 / Column 1 → 2 (Full House)
- Row 2 / Column 9 → 4 (Full House)
- Row 1 / Column 7 → 1 (Naked Single)
- Row 8 / Column 9 → 7 (Naked Single)
- Row 1 / Column 4 → 5 (Naked Single)
- Row 1 / Column 9 → 8 (Full House)
- Row 3 / Column 9 → 5 (Full House)
- Row 9 / Column 9 → 1 (Full House)
- Row 3 / Column 4 → 1 (Full House)
- Row 9 / Column 7 → 4 (Naked Single)
- Row 8 / Column 7 → 2 (Full House)
- Row 8 / Column 2 → 4 (Full House)
- Row 9 / Column 2 → 7 (Full House)
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