Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 5 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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