Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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