Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Go back and make a different choice.

 

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

 

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