Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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