Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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