Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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