Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 8 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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