Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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