Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 1 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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