Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 1 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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