Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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