Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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