Langer's Sudoku Assistant

Invalid Sudoku!

Row 1 is invalid. Go back and make a different choice.

 

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

 

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