Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 6 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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