Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 7 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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