Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Go back and make a different choice.

 

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

 

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