Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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