Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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