Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 6 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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