Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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