Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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