Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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