Wow, hacker news is incredible sometimes :) , I was/am just looking over your notebook a week ago. Vacation is starting in a couple days and i was gonna try and solve if infinite play is possible in Tetris with just perfect clears. People have been at the problem for a few years now, and your notebook is pretty cool :D http://harddrop.com/forums/index.php?showtopic=7792&hl=perfe...