Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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