Solution for Hard Sudoku #1142715398698
3
9
4
7
2
6
8
1
5
1
7
6
4
5
8
3
9
2
5
8
2
9
1
3
6
4
7
5
8
3
2
6
9
1
4
7
9
6
7
8
4
1
2
3
5
4
2
1
3
7
5
8
9
6
6
5
1
9
7
8
4
3
2
7
8
4
5
2
3
6
1
9
2
3
9
1
6
4
7
5
8
This Sudoku Puzzle has 63 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), undefined, Turbot Fish techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 6 / Column 1 → 1 (Naked Single)
- Row 6 / Column 2 → 4 (Naked Single)
- Row 6 / Column 3 → 7 (Naked Single)
- Row 6 / Column 6 → 5 (Naked Single)
- Row 6 / Column 7 → 8 (Full House)
- Row 5 / Column 4 → 8 (Hidden Single)
- Row 8 / Column 8 → 6 (Hidden Single)
- Row 7 / Column 6 → 4 (Hidden Single)
- Row 5 / Column 5 → 4 (Hidden Single)
- Row 1 / Column 3 → 4 (Hidden Single)
- Row 4 / Column 7 → 4 (Hidden Single)
- Row 3 / Column 3 → 5 (Hidden Single)
- Row 1 / Column 8 → 8 (Hidden Single)
- Row 9 / Column 9 → 8 (Hidden Single)
- Row 3 / Column 1 → 8 (Hidden Single)
- Row 8 / Column 3 → 8 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 6 in b2 => r1c2<>6
- Locked Candidates Type 1 (Pointing): 3 in b7 => r9c78<>3
- Locked Candidates Type 1 (Pointing): 1 in b9 => r5c7<>1
- Locked Candidates Type 2 (Claiming): 2 in r7 => r89c7,r9c8<>2
- 2-String Kite: 9 in r4c3,r9c6 (connected by r4c4,r5c6) => r9c3<>9
- Turbot Fish: 9 r5c6 =9= r9c6 -9- r9c2 =9= r8c1 => r5c1<>9
- XY-Wing: 2/9/3 in r18c1,r9c3 => r2c3<>3
- XY-Wing: 1/3/9 in r4c49,r7c9 => r7c4<>9
- Row 7 / Column 4 → 7 (Naked Single)
- Row 1 / Column 5 → 7 (Hidden Single)
- Row 1 / Column 7 → 5 (Hidden Single)
- Row 2 / Column 5 → 5 (Hidden Single)
- Row 5 / Column 9 → 5 (Hidden Single)
- Row 9 / Column 8 → 5 (Hidden Single)
- Row 3 / Column 6 → 2 (Hidden Single)
- Row 5 / Column 6 → 1 (Hidden Single)
- Row 4 / Column 4 → 9 (Full House)
- Row 1 / Column 6 → 6 (Naked Single)
- Row 9 / Column 6 → 9 (Full House)
- Row 4 / Column 9 → 1 (Hidden Single)
- Row 9 / Column 7 → 7 (Hidden Single)
- Row 5 / Column 8 → 7 (Hidden Single)
- Row 9 / Column 4 → 6 (Hidden Single)
- Row 8 / Column 1 → 9 (Hidden Single)
- Row 1 / Column 1 → 3 (Naked Single)
- Row 5 / Column 1 → 2 (Full House)
- Row 8 / Column 7 → 1 (Naked Single)
- Row 8 / Column 5 → 2 (Full House)
- Row 9 / Column 5 → 1 (Full House)
- Row 1 / Column 4 → 1 (Naked Single)
- Row 1 / Column 2 → 9 (Full House)
- Row 3 / Column 4 → 3 (Full House)
- Row 3 / Column 2 → 1 (Full House)
- Row 4 / Column 3 → 3 (Naked Single)
- Row 4 / Column 8 → 2 (Full House)
- Row 5 / Column 7 → 3 (Full House)
- Row 7 / Column 8 → 3 (Full House)
- Row 5 / Column 2 → 6 (Naked Single)
- Row 5 / Column 3 → 9 (Full House)
- Row 9 / Column 3 → 2 (Naked Single)
- Row 2 / Column 3 → 6 (Full House)
- Row 2 / Column 2 → 2 (Full House)
- Row 9 / Column 2 → 3 (Full House)
- Row 2 / Column 7 → 9 (Naked Single)
- Row 2 / Column 9 → 3 (Full House)
- Row 7 / Column 9 → 9 (Full House)
- Row 7 / Column 7 → 2 (Full House)
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