Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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