Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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