Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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