Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Column 3 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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