Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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