Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 5 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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