Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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