Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 2 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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