Langer's Sudoku Assistant

Invalid Sudoku!

Column 9 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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