Today's user created puzzle is broken.
Today's user created puzzle will not accept correct answers in several of the boxes. Turn on continuous checking and you'll see the hint turn red when you enter an answer that meets the hint's conditions.
The '1' box at (4,5) says that 1 is wrong and 3 is right.
The '3-' box at (1,6) says that numbers which differ by 3 are wrong but those which differ by 1 are right. (I think I see a pattern here.)
The '1-' box at (3, 6) doesn't like answers which differ by 1.
The '17+' box at (4, 6) doesn't like answers which add up to 17.
The '54x' box at (9, 4) doesn't like answers whose product is 54.
If you ignore the errors, or turn off continuous checking, and just follow the hints as they are written, the puzzle is solvable, but the page doesn't recognize it as a correct solution.