Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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