Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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