Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Go back and make a different choice.

 

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

 

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