Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 7 is invalid. The bottom right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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