Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Go back and make a different choice.

 

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

 

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