Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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