Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Go back and make a different choice.

 

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

 

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