Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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