Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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