Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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