Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Go back and make a different choice.

 

6
1
2
7
9
5
3
8
4
8
7
3
1
2
4
5
6
9
9
5
4
6
3
8
7
1  2   
       
       
1  2   
       
       
5
6
3
8
4
9
1
2
7
9
4
7
2
1
6
3
8
5
8
1  2   
       
       
1  2   
       
       
5
7
3
4
6
9
9
7
8
4
3
6
2
5
1  2  3
4  5  6
7  8  9
4
5
2
7
9
1
6
3
8
3
9
6
2
8
5
1
4
7

 

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