Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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