"Castle 2" by Midnight Martian

Castle 2 is a taller, narrower version of Castle 1. It's also more difficult than Castle 1 - it's probably one of the more challening layouts (at least judging by my own difficulty solving it).

Load this layout in Moonlight Mahjong on your iPhone or iPod Touch.

Requires Moonlight Mahjong 1.1 or later.