Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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