Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Go back and make a different choice.

 

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

 

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