Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 4 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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