Langer's Sudoku Assistant

Invalid Sudoku!

Column 2 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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