Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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