Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 3 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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