Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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