Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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