Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Go back and make a different choice.

 

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

 

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