Solution for Hard Sudoku #1164327598198
3
6
8
9
4
2
1
6
3
7
8
1
3
4
5
9
1
1
7
2
3
6
8
7
5
6
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 → 2 (Naked Single)
- Row 6 / Column 2 → 6 (Naked Single)
- Row 6 / Column 3 → 3 (Naked Single)
- Row 6 / Column 6 → 7 (Naked Single)
- Row 6 / Column 7 → 8 (Full House)
- Row 5 / Column 4 → 8 (Hidden Single)
- Row 8 / Column 8 → 1 (Hidden Single)
- Row 7 / Column 6 → 6 (Hidden Single)
- Row 5 / Column 5 → 6 (Hidden Single)
- Row 1 / Column 3 → 6 (Hidden Single)
- Row 4 / Column 7 → 6 (Hidden Single)
- Row 3 / Column 3 → 7 (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): 1 in b2 => r1c2<>1
- Locked Candidates Type 1 (Pointing): 5 in b7 => r9c78<>5
- Locked Candidates Type 1 (Pointing): 2 in b9 => r5c7<>2
- Locked Candidates Type 2 (Claiming): 4 in r7 => r89c7,r9c8<>4
- 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: 4/9/5 in r18c1,r9c3 => r2c3<>5
- XY-Wing: 2/5/9 in r4c49,r7c9 => r7c4<>9
- Row 7 / Column 4 → 3 (Naked Single)
- Row 1 / Column 5 → 3 (Hidden Single)
- Row 1 / Column 7 → 7 (Hidden Single)
- Row 2 / Column 5 → 7 (Hidden Single)
- Row 5 / Column 9 → 7 (Hidden Single)
- Row 9 / Column 8 → 7 (Hidden Single)
- Row 3 / Column 6 → 4 (Hidden Single)
- Row 5 / Column 6 → 2 (Hidden Single)
- Row 4 / Column 4 → 9 (Full House)
- Row 1 / Column 6 → 1 (Naked Single)
- Row 9 / Column 6 → 9 (Full House)
- Row 4 / Column 9 → 2 (Hidden Single)
- Row 9 / Column 7 → 3 (Hidden Single)
- Row 5 / Column 8 → 3 (Hidden Single)
- Row 9 / Column 4 → 1 (Hidden Single)
- Row 8 / Column 1 → 9 (Hidden Single)
- Row 1 / Column 1 → 5 (Naked Single)
- Row 5 / Column 1 → 4 (Full House)
- Row 8 / Column 7 → 2 (Naked Single)
- Row 8 / Column 5 → 4 (Full House)
- Row 9 / Column 5 → 2 (Full House)
- Row 1 / Column 4 → 2 (Naked Single)
- Row 1 / Column 2 → 9 (Full House)
- Row 3 / Column 4 → 5 (Full House)
- Row 3 / Column 2 → 2 (Full House)
- Row 4 / Column 3 → 5 (Naked Single)
- Row 4 / Column 8 → 4 (Full House)
- Row 5 / Column 7 → 5 (Full House)
- Row 7 / Column 8 → 5 (Full House)
- Row 5 / Column 2 → 1 (Naked Single)
- Row 5 / Column 3 → 9 (Full House)
- Row 9 / Column 3 → 4 (Naked Single)
- Row 2 / Column 3 → 1 (Full House)
- Row 2 / Column 2 → 4 (Full House)
- Row 9 / Column 2 → 5 (Full House)
- Row 2 / Column 7 → 9 (Naked Single)
- Row 2 / Column 9 → 5 (Full House)
- Row 7 / Column 9 → 9 (Full House)
- Row 7 / Column 7 → 4 (Full House)
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