Solution for Medium Sudoku #21826514397101
5
2
9
6
3
4
1
8
7
3
6
7
9
8
1
5
4
2
8
4
1
2
7
5
6
3
9
7
5
8
3
6
2
4
9
1
4
1
6
7
9
5
2
3
8
9
2
3
4
1
8
7
5
6
8
7
6
2
4
3
9
1
5
1
2
3
6
5
9
8
7
4
5
9
4
1
8
7
3
6
2
This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Naked Pair, Locked Candidates Type 2 (Claiming), Naked Triple techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 3 / Column 4 → 5 (Hidden Single)
- Row 2 / Column 1 → 6 (Hidden Single)
- Row 3 / Column 2 → 8 (Hidden Single)
- Row 1 / Column 7 → 8 (Hidden Single)
- Row 8 / Column 4 → 6 (Hidden Single)
- Row 9 / Column 8 → 6 (Hidden Single)
- Row 1 / Column 8 → 4 (Hidden Single)
- Row 7 / Column 8 → 9 (Hidden Single)
- Row 7 / Column 1 → 8 (Naked Single)
- Row 3 / Column 9 → 9 (Hidden Single)
- Row 4 / Column 3 → 8 (Hidden Single)
- Row 9 / Column 3 → 5 (Hidden Single)
- Row 8 / Column 3 → 3 (Hidden Single)
- Row 8 / Column 9 → 7 (Naked Single)
- Row 9 / Column 7 → 3 (Full House)
- Locked Candidates Type 1 (Pointing): 2 in b1 => r1c46<>2
- Locked Candidates Type 1 (Pointing): 2 in b2 => r46c6<>2
- Locked Candidates Type 1 (Pointing): 7 in b3 => r2c6<>7
- Locked Candidates Type 1 (Pointing): 4 in b8 => r9c12<>4
- Row 9 / Column 1 → 9 (Naked Single)
- Naked Pair: 1,3 in r1c49 => r1c56<>1, r1c56<>3
- Locked Candidates Type 2 (Claiming): 3 in c5 => r4c46,r6c46<>3
- Naked Pair: 1,7 in r9c25 => r9c46<>1, r9c6<>7
- Naked Pair: 1,3 in r17c4 => r4c4<>1
- Naked Pair: 4,8 in r69c6 => r4c6<>4
- Naked Triple: 2,4,8 in r6c146 => r6c278<>2, r6c27<>4
- Row 6 / Column 7 → 7 (Naked Single)
- Row 2 / Column 7 → 2 (Naked Single)
- Row 5 / Column 7 → 4 (Full House)
- Row 2 / Column 6 → 1 (Naked Single)
- Row 3 / Column 8 → 3 (Naked Single)
- Row 3 / Column 6 → 2 (Full House)
- Row 1 / Column 4 → 3 (Naked Single)
- Row 2 / Column 9 → 5 (Naked Single)
- Row 2 / Column 8 → 7 (Full House)
- Row 1 / Column 9 → 1 (Full House)
- Row 4 / Column 9 → 3 (Full House)
- Row 4 / Column 6 → 6 (Naked Single)
- Row 6 / Column 8 → 5 (Naked Single)
- Row 7 / Column 4 → 1 (Naked Single)
- Row 1 / Column 6 → 7 (Naked Single)
- Row 1 / Column 5 → 6 (Full House)
- Row 4 / Column 5 → 1 (Naked Single)
- Row 6 / Column 2 → 9 (Naked Single)
- Row 7 / Column 2 → 7 (Naked Single)
- Row 7 / Column 6 → 3 (Full House)
- Row 9 / Column 5 → 7 (Naked Single)
- Row 4 / Column 8 → 2 (Naked Single)
- Row 5 / Column 8 → 1 (Full House)
- Row 5 / Column 5 → 9 (Naked Single)
- Row 6 / Column 5 → 3 (Full House)
- Row 1 / Column 2 → 2 (Naked Single)
- Row 1 / Column 3 → 9 (Full House)
- Row 5 / Column 3 → 2 (Full House)
- Row 5 / Column 2 → 6 (Full House)
- Row 9 / Column 2 → 1 (Naked Single)
- Row 4 / Column 4 → 4 (Naked Single)
- Row 4 / Column 2 → 5 (Full House)
- Row 8 / Column 2 → 4 (Full House)
- Row 6 / Column 1 → 4 (Full House)
- Row 8 / Column 1 → 2 (Full House)
- Row 6 / Column 6 → 8 (Naked Single)
- Row 6 / Column 4 → 2 (Full House)
- Row 9 / Column 4 → 8 (Full House)
- Row 9 / Column 6 → 4 (Full House)
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