Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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