Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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