Rocketflip. I've not seen very many "good" videos on YouTube of "secret grade builds", but I've NEVER seen a "perfect build". So here it is :). What makes this a "perfect build" is the fact that the pattern in the blocks truly goes from the very bottom to the very top; the only gaps in the play field are where the pattern flows. It only took me 28 lines to do it too :D. I hope others will post "perfect builds" as well :) Edit: Ok, this is still a decent video, but it doesn't compare to my best "perfect" build: www.youtube.com 1 minute 23 seconds!