Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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