Any game with a random element implies some degree of luck. This is anything where something happens at random (e.g. Monopoly, Scrabble, Dominos, Magic the Gathering, Poker, Snakes and Ladders) although much skill would be needed in most of those, there is a random element too.
I believe the post is about 100% skill and therefore 0% luck! I'd count Chess as one of those.
Poker is virtually 100% luck (over the long run) against players of the same skill level, and quickly regresses towards pure skill (again, over the long run) as skill differentials increase.
But it never becomes pure skill over the course of a hand, a night of poker, or even a tournament. The sample sizes are just way too small relative the number of outcomes. That's why we've seen some pretty bad players make some pretty deep runs in some pretty major tournaments, and why we've seen some real legends of the game continually disappoint in the same situations. A lifetime of WSOP main events isn't long enough to smooth out the variance curve -- there just aren't enough hands played. And all the skill in the world isn't going to turn that K2o into a winner if your opponent flops the nuts.
+1