Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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