The dinosaur/color game rears it's ugly head. And is tamed by a matrix diagram.
The newest Zen pencast for the logic games in PrepTest 57 is live.
For those of you who are interested, you can buy the Zen of 180 logic games pencast explanations here. Posted below is a static image of the newest pencast, as well as an example pencast from the sample June 2007 LSAT.