Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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