Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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