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.

 

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

 

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