I'm stuck in the room with swimming pool. In one of walkhtroughts says that jump to the dark triangle. But I don't know with one. From the both I can't get to the alcove. Here are three screenshots.
http://img186.imageshack.us/img186/5852/beztytuunq5.png
http://img514.imageshack.us/img514/2880/beztytuu1kw6.png
http://img409.imageshack.us/img409/1113/beztytuu2lf3.png
