[no_protocol]

I was able to complete one problem within the 3 minute time limit. I had to try multiple times to get the right code for two of the symbols required. The linked symbol drawing site would have helped on one of them.

I really like the format of the user interface with instant response/feedback.

It seems like you're pretty close to having an genuinely useful page.

Suggestions:

- As-is, this is really only useful to people who already have some familiarity with this material already. It would be way more useful if it had an additional mode for an absolute beginner

- Instead of being just a memory/recall test, the primary usage mode should be a tutorial and response format for learning

- In the learning mode, first present information on one new concept, then allow the user to test their new knowledge on a problem similar to the way the existing system works

[barbierocks]

Tutorial mode is a great idea! Yeah, this is definitely geared towards experienced people.

[moraljto]

+1! a tutorial mode would be really helpful. Especially if it included a "reveal (one possible) answer" functionality.