Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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