You *will* be disappointed if you use these solutions rather than work it out for yourself, you are only cheating yourself - YOU HAVE BEEN WARNED (maybe you want the hints only page?)
http://ourverture-facile.com provides a logic game for you to solve. Each level of the game could require you to do anything from mathematics, image manipulation, audio editting, hex editting... in fact anything could be required to solve it.
Below I've included full and complete spoilers as a walkthrough of the game. I haven't finished it, but I've included information on the level that I'm up to. I will update this over time & contributions are welcome as comments to my blog.