Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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