Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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