Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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