Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. Go back and make a different choice.

 

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

 

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