Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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