I usually hang out at caribou cafe on Salwa road, where smoking is allowed upstairs, and the place is suitable for a chess game. If anyone is interested in watching/playing I'd be more than happy to meet up for a game or two. I'm only staying in Qatar for a week more before getting back to Germany, but a good friend of mine who lives here is a very strong player who although amateur, regularly takes games from IMs, so an introduction for those interested would be welcome :)