Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 7 is invalid. The bottom right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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