Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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