Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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