Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Go back and make a different choice.

 

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

 

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