Comments on CSTutoringCenter

To be honest, I don't really think it is worth much. The challenges as I remember them aren't that high quality (and some are simply bad). From previous interaction I also have very strong doubts about the quality of the code behind the site. Never looked at the tutorials or the sudoku thing, so can't really say anything about that (or check it out, now that the site is down).

@Gizmore: Alex asks for $5k for it.
@dloser: There is no OOP behind.

Some questions are still on web.archive.org.

Quote from dloser

To be honest, I don't really think it is worth much. The challenges as I remember them aren't that high quality (and some are simply bad).

I can remember, that some of the series questions had a wrong answer in the database - what explains the low solver numbers to the particular problems. overview. I then looked in the forum to find an old post mentioning that - but it was still not fixed.
For another problem you had to enter a fraction - but not in reduced form.

Off topic:
and now MathChall is down too.