Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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