Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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