Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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