Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Go back and make a different choice.

 

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

 

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