Dude poker has been proven to be a game of skill and chess has plenty of luck....I mean does your opponent like open or closed positions does he blunder piddly crap like that
Chess is about having the skills to capitalize on your luck. If your opponent makes a bad move, you are lucky, and if you can see it and punish it, you are good. You also needs the skills to avoid bad moves yourself, handing luck over to your opponent.
Marbles.