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

 

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