Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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