Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 9 is invalid. The bottom right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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