Langer's Sudoku Assistant

Invalid Sudoku!

Row 3 is invalid. Go back and make a different choice.

 

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

 

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