Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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