Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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