Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Column 4 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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