Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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