Wanna play a game of chess?

[Aiwendil]

Quoth Littlemanpoet:

it came from Numenorean Avari

Nicely rhymed, but who exactly are the Numenorean Avari? Sounds to me a bit like Hobbes's "round quadrangle" (i.e., it doesn't exist).

ten points if you know who that is - and fifteen if you can tell me where he first published the rules for the game

Just ten points for me then. He's the creator (well, one of the creators, properly speaking) of Dungeons and Dragons. Where did he publish the rules of "fidchell", and is there anywhere I can learn them?