Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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