Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 6 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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