Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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