Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 3 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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