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.

 

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

 

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