True, but Cardith's entry also shows that Eurabatres plays chess semi-regularly--he knows the rules, and he's really good. He might have played the game as a pastime in the Age of Dragons when he wasn't fighting, or he may have simply picked it up during the Age of Rebirth. Even the latter gives him well over a human lifetime to learn the game, and we can assume he's got a pretty good memory, being the most powerful non-angelic creature in creation. That can all add up eventually.
Okay, we can only settle this with the official Word Of God. Kael, if you're reading this, what's Eurabatres's USCF rating?
And while I'm asking, what's Tebryn Arbandi's favorite ice cream flavor?