Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 1 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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