Solution for Medium Sudoku #21431675982103
2
5
1
6
8
7
3
9
4
6
7
4
1
3
9
5
8
2
3
8
9
4
2
5
7
1
6
4
1
2
8
7
5
9
3
6
8
9
3
2
4
6
7
5
1
5
6
7
9
3
1
2
4
8
5
4
8
7
2
9
1
6
3
3
6
7
4
1
8
9
2
5
1
9
2
6
5
3
8
7
4
This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Naked Single, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 4 / Column 5 → 9 (Hidden Single)
- Row 6 / Column 3 → 6 (Hidden Single)
- Row 5 / Column 2 → 7 (Hidden Single)
- Row 7 / Column 6 → 7 (Hidden Single)
- Row 1 / Column 5 → 7 (Hidden Single)
- Row 4 / Column 7 → 5 (Hidden Single)
- Row 6 / Column 5 → 5 (Hidden Single)
- Row 4 / Column 3 → 2 (Hidden Single)
- Row 5 / Column 1 → 8 (Hidden Single)
- Row 3 / Column 7 → 7 (Hidden Single)
- Row 8 / Column 6 → 8 (Hidden Single)
- Row 2 / Column 2 → 8 (Hidden Single)
- Row 7 / Column 3 → 8 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 9 in b1 => r3c4689<>9
- Locked Candidates Type 1 (Pointing): 9 in b3 => r1c46<>9
- Locked Candidates Type 1 (Pointing): 2 in b5 => r5c9<>2
- Locked Candidates Type 1 (Pointing): 4 in b5 => r5c8<>4
- Locked Candidates Type 1 (Pointing): 2 in b9 => r7c4<>2
- Naked Triple: 1,3,4 in r12c7,r3c8 => r1c89,r3c9<>3, r1c8<>4, r3c9<>1
- Row 3 / Column 9 → 6 (Naked Single)
- Row 9 / Column 2 → 6 (Hidden Single)
- Row 2 / Column 1 → 6 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 3 in b1 => r3c48<>3
- Locked Candidates Type 1 (Pointing): 4 in b1 => r3c468<>4
- Row 3 / Column 8 → 1 (Naked Single)
- Row 5 / Column 8 → 3 (Naked Single)
- Row 5 / Column 9 → 1 (Naked Single)
- Row 6 / Column 8 → 4 (Hidden Single)
- Row 6 / Column 7 → 2 (Naked Single)
- Row 6 / Column 9 → 8 (Full House)
- Row 1 / Column 9 → 9 (Naked Single)
- Row 1 / Column 8 → 8 (Naked Single)
- Row 8 / Column 9 → 3 (Naked Single)
- Row 7 / Column 9 → 2 (Full House)
- Row 7 / Column 7 → 1 (Naked Single)
- Row 4 / Column 2 → 1 (Hidden Single)
- Row 4 / Column 1 → 4 (Full House)
- Row 3 / Column 1 → 3 (Naked Single)
- Row 7 / Column 1 → 5 (Naked Single)
- Row 9 / Column 1 → 1 (Full House)
- Row 7 / Column 8 → 9 (Naked Single)
- Row 8 / Column 8 → 5 (Full House)
- Row 7 / Column 2 → 4 (Naked Single)
- Row 3 / Column 2 → 9 (Full House)
- Row 7 / Column 4 → 3 (Full House)
- Row 3 / Column 3 → 4 (Full House)
- Row 8 / Column 3 → 9 (Naked Single)
- Row 9 / Column 3 → 3 (Full House)
- Row 9 / Column 5 → 2 (Naked Single)
- Row 5 / Column 5 → 4 (Naked Single)
- Row 8 / Column 5 → 1 (Naked Single)
- Row 2 / Column 5 → 3 (Full House)
- Row 8 / Column 4 → 4 (Full House)
- Row 2 / Column 7 → 4 (Naked Single)
- Row 1 / Column 7 → 3 (Full House)
- Row 1 / Column 4 → 6 (Naked Single)
- Row 1 / Column 6 → 4 (Full House)
- Row 2 / Column 6 → 9 (Naked Single)
- Row 2 / Column 4 → 1 (Full House)
- Row 5 / Column 4 → 2 (Naked Single)
- Row 5 / Column 6 → 6 (Full House)
- Row 9 / Column 6 → 5 (Naked Single)
- Row 3 / Column 6 → 2 (Full House)
- Row 3 / Column 4 → 5 (Full House)
- Row 9 / Column 4 → 9 (Full House)
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