Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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