Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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