   CS/Math/Other puzzles
  I'm looking for some decent puzzle books or computer apps. Doesn't have to be super flashy, but I want them to be hard, make me think, and quite possibly take me days to work out. An emphasis on CS would be preferable, but others would be acceptable.Does anyone have some suggestions? Google didn't turn up what I was looking for.//edit. I should note that Hack.net, et al. is not what i'm looking for. Any computer app should be offline where possible. And i'm running windows btw.   
  You mean books like this?   ;Quote:Original post by legalizeYou mean books like this?Hmmm, kinda. More like things such as Einstein's puzzle (less hard!!!), with a mix of what you linked to, etc.   ;I like this one;  These are a bit theoretical, but maybe that's what you want:There's this book, a series of Prolog problems which can certainly be solved in other languages also. I can't estimate how (un)readable the problem definition is for someone not familiar with Prolog.You can also look for "99 problems" using google, I believe the original list was also made for Prolog, but it has been translated into several languages.;  you could download problem pages from Project Euler.   ;Quote:Original post by capn_midnightyou could download problem pages from Project Euler.In this vein there are also some more sites that could be interesting. Here's some listed: ACM International Collegiate Programming Contest. Don't mind the Wikipedia name entry, but search for the bottom to see the on-line judge listing. For instance, Universidad de Valladolid Online Judge is one of them. The problems are on occasion rather mathematical in their nature. If you would like to get money for doing that, there are places like TopCoder also.[Edited by - Naurava kulkuri on September 14, 2007 7:27:38 AM];Quote:Original post by capn_midnightyou could download problem pages from Project Euler.Hmm that looks close to what I'm looking for. something with more logic would be cool, although this seems like a fun one!   ;This seems relevant.;Quote:Original post by Driv3MeFarThis seems relevant.I would think so! Looks good.