Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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