Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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