Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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