Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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