Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 2 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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