Langer's Sudoku Assistant

Invalid Sudoku!

Row 1 is invalid. Column 5 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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