Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 6 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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