Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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