Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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