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.

 

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

 

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