Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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