Heh. 15 years later, one shot this one. It's a classic but a strict logic game; there are no real tricks, just mistakes. Think cleanly here. It was a quickie, but I really liked this one. Fun pp1 with a slick set of moves. This is a fantastic piston. Many ways to be 2 or 4 off! That two off! LOL. Ridiculous. Found the particular way to go. 2 tries! Two cuts, more or less. Both reasonably interesting. I mean it was fine, just lock stuff. What is broken about it? (Other than the mysterious corner of doom?) I enjoyed adeptly handling this toilet. Couple minor errors result in 2 off! Giga busted but surprisingly fun. Dodged any 2 off trickery but still had a nice time with this practical joke. This one was extremely weird for me. Exceptionally logical but it took me many tries to break through. 
Insights