Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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