Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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