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.

 

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

 

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