Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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