Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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