Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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