Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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