Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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