Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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