Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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