Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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