Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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