Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 1 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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