Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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