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

 

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