Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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