Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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