Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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