Solution for Hard Sudoku #1475489361298
5
3
4
1
8
7
9
6
2
8
9
2
5
4
6
7
3
1
6
7
1
3
2
9
5
8
4
2
1
5
4
9
6
8
7
3
4
8
9
2
7
3
6
1
5
7
3
6
1
5
8
4
9
2
7
2
9
6
5
8
3
4
1
3
6
4
1
2
7
9
5
8
8
1
5
9
4
3
2
6
7
This Sudoku Puzzle has 62 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 9 / Column 6 → 8 (Naked Single)
- Row 8 / Column 6 → 7 (Naked Single)
- Row 4 / Column 6 → 9 (Naked Single)
- Row 7 / Column 6 → 4 (Naked Single)
- Row 3 / Column 6 → 1 (Full House)
- Row 6 / Column 5 → 1 (Hidden Single)
- Row 2 / Column 8 → 2 (Hidden Single)
- Row 4 / Column 7 → 7 (Hidden Single)
- Row 5 / Column 5 → 7 (Hidden Single)
- Row 3 / Column 4 → 7 (Hidden Single)
- Row 7 / Column 1 → 7 (Hidden Single)
- Row 7 / Column 3 → 9 (Hidden Single)
- Row 1 / Column 9 → 1 (Hidden Single)
- Row 2 / Column 1 → 1 (Hidden Single)
- Row 9 / Column 3 → 1 (Hidden Single)
- Row 7 / Column 8 → 1 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 8 in b3 => r3c5<>8
- Locked Candidates Type 1 (Pointing): 2 in b4 => r8c1<>2
- Locked Candidates Type 1 (Pointing): 3 in b9 => r23c9<>3
- Locked Candidates Type 2 (Claiming): 5 in c7 => r23c9,r3c8<>5
- 2-String Kite: 6 in r4c9,r7c4 (connected by r4c5,r6c4) => r7c9<>6
- Turbot Fish: 6 r4c5 =6= r4c9 -6- r8c9 =6= r9c8 => r9c5<>6
- XY-Wing: 3/8/6 in r1c47,r6c4 => r6c7<>6
- Row 6 / Column 7 → 4 (Naked Single)
- Row 5 / Column 1 → 4 (Hidden Single)
- Row 5 / Column 2 → 9 (Hidden Single)
- Row 3 / Column 1 → 9 (Hidden Single)
- Row 1 / Column 5 → 9 (Hidden Single)
- Row 4 / Column 3 → 5 (Hidden Single)
- Row 2 / Column 9 → 9 (Hidden Single)
- Row 1 / Column 4 → 8 (Hidden Single)
- Row 6 / Column 4 → 6 (Naked Single)
- Row 4 / Column 5 → 8 (Full House)
- Row 4 / Column 1 → 2 (Naked Single)
- Row 4 / Column 9 → 6 (Full House)
- Row 2 / Column 5 → 4 (Hidden Single)
- Row 3 / Column 9 → 4 (Hidden Single)
- Row 6 / Column 9 → 2 (Hidden Single)
- Row 9 / Column 8 → 6 (Hidden Single)
- Row 3 / Column 8 → 8 (Naked Single)
- Row 5 / Column 8 → 5 (Full House)
- Row 5 / Column 9 → 8 (Full House)
- Row 9 / Column 1 → 3 (Naked Single)
- Row 9 / Column 5 → 5 (Full House)
- Row 6 / Column 1 → 8 (Naked Single)
- Row 6 / Column 3 → 3 (Full House)
- Row 8 / Column 3 → 8 (Full House)
- Row 8 / Column 1 → 6 (Full House)
- Row 3 / Column 5 → 3 (Naked Single)
- Row 2 / Column 4 → 5 (Full House)
- Row 7 / Column 4 → 3 (Full House)
- Row 2 / Column 7 → 3 (Full House)
- Row 3 / Column 2 → 6 (Naked Single)
- Row 1 / Column 2 → 3 (Full House)
- Row 1 / Column 7 → 6 (Full House)
- Row 3 / Column 7 → 5 (Full House)
- Row 8 / Column 5 → 2 (Naked Single)
- Row 7 / Column 5 → 6 (Full House)
- Row 7 / Column 9 → 5 (Naked Single)
- Row 7 / Column 2 → 2 (Full House)
- Row 8 / Column 2 → 5 (Full House)
- Row 8 / Column 9 → 3 (Full House)
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