Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 3 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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