Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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