Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 6 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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