Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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