Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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