Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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