Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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