Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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