Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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