I have that game too! I'm pretty far into it. The puzzles get a lot harder as you go along but they really suck you in. I'm a sucker for puzzles.

THAT clock puzzle was tough for me too. I know a couple people who've been stumped by that one and I think it induces brain farts. For example, while I was working it out, for some reason I was accounting for times like 6:66, 7:77, 8:88, etc.