Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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