Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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