Solution for Hard Sudoku #2369527341898
6
3
9
4
5
1
8
7
2
8
2
4
7
9
3
5
1
6
5
7
1
2
8
6
9
3
4
2
6
5
9
8
4
7
1
3
9
3
7
1
6
2
4
8
5
1
4
8
3
5
7
6
9
2
1
2
7
5
9
8
3
4
6
3
4
9
6
7
1
2
5
8
8
6
5
4
2
3
7
1
9
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 4 / Column 1 → 2 (Naked Single)
- Row 4 / Column 2 → 6 (Naked Single)
- Row 4 / Column 3 → 5 (Naked Single)
- Row 4 / Column 6 → 7 (Naked Single)
- Row 4 / Column 7 → 1 (Full House)
- Row 2 / Column 8 → 8 (Hidden Single)
- Row 3 / Column 6 → 6 (Hidden Single)
- Row 5 / Column 5 → 6 (Hidden Single)
- Row 5 / Column 4 → 1 (Hidden Single)
- Row 6 / Column 7 → 6 (Hidden Single)
- Row 9 / Column 3 → 6 (Hidden Single)
- Row 7 / Column 3 → 7 (Hidden Single)
- Row 1 / Column 9 → 1 (Hidden Single)
- Row 9 / Column 8 → 1 (Hidden Single)
- Row 7 / Column 1 → 1 (Hidden Single)
- Row 2 / Column 3 → 1 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 3 in b1 => r1c78<>3
- Locked Candidates Type 1 (Pointing): 2 in b3 => r5c7<>2
- Locked Candidates Type 1 (Pointing): 8 in b8 => r9c2<>8
- Locked Candidates Type 2 (Claiming): 9 in r3 => r1c78,r2c7<>9
- 2-String Kite: 4 in r1c6,r6c3 (connected by r5c6,r6c4) => r1c3<>4
- Turbot Fish: 4 r2c1 =4= r1c2 -4- r1c6 =4= r5c6 => r5c1<>4
- XY-Wing: 4/9/3 in r1c3,r29c1 => r8c3<>3
- XY-Wing: 2/3/4 in r36c9,r6c4 => r3c4<>4
- Row 3 / Column 4 → 5 (Naked Single)
- Row 9 / Column 5 → 5 (Hidden Single)
- Row 9 / Column 7 → 7 (Hidden Single)
- Row 8 / Column 5 → 7 (Hidden Single)
- Row 1 / Column 8 → 7 (Hidden Single)
- Row 5 / Column 9 → 7 (Hidden Single)
- Row 7 / Column 6 → 9 (Hidden Single)
- Row 1 / Column 7 → 5 (Hidden Single)
- Row 5 / Column 8 → 5 (Hidden Single)
- Row 5 / Column 6 → 2 (Hidden Single)
- Row 6 / Column 4 → 4 (Full House)
- Row 9 / Column 6 → 8 (Naked Single)
- Row 1 / Column 6 → 4 (Full House)
- Row 6 / Column 9 → 2 (Hidden Single)
- Row 2 / Column 7 → 2 (Hidden Single)
- Row 2 / Column 5 → 9 (Naked Single)
- Row 1 / Column 5 → 2 (Full House)
- Row 2 / Column 1 → 4 (Full House)
- Row 1 / Column 4 → 8 (Full House)
- Row 9 / Column 1 → 3 (Naked Single)
- Row 5 / Column 1 → 9 (Full House)
- Row 7 / Column 2 → 2 (Naked Single)
- Row 7 / Column 4 → 3 (Full House)
- Row 9 / Column 4 → 2 (Full House)
- Row 9 / Column 2 → 4 (Full House)
- Row 5 / Column 7 → 3 (Naked Single)
- Row 6 / Column 8 → 9 (Full House)
- Row 6 / Column 3 → 3 (Full House)
- Row 3 / Column 8 → 3 (Full House)
- Row 5 / Column 2 → 8 (Naked Single)
- Row 5 / Column 3 → 4 (Full House)
- Row 8 / Column 7 → 4 (Naked Single)
- Row 3 / Column 7 → 9 (Full House)
- Row 3 / Column 9 → 4 (Full House)
- Row 8 / Column 9 → 3 (Full House)
- Row 1 / Column 3 → 9 (Naked Single)
- Row 1 / Column 2 → 3 (Full House)
- Row 8 / Column 2 → 9 (Full House)
- Row 8 / Column 3 → 8 (Full House)
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