After a while I began to notice they were not playing by western chess rules, even if the pieces looked familiar. The pawns were flat, and set up one row farther up, and they seemed to change their allowed movement at some point.
It was fun watching but I didn't make much headway in observing the rules before the boat arrived.
When I got home I forgot about it. Recently, though, I decided I'd take a look on the web and see what I could find.
"What" was a lot:
- Rules of Thai Chess, also known as Makrook Thai
- Makruk: Thai Chess
- How to play Thai Chess
- Thai Chess java applet
I still haven't played it, but it looks interesting.