Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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