Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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