Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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