Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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