Langer's Sudoku Assistant

Invalid Sudoku!

Column 1 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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