Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 8 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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