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

 

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