Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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