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.

 

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

 

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