Langer's Sudoku Assistant

Invalid Sudoku!

Column 2 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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