Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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