Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 2 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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