Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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