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.

 

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

 

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