Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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