"They want a *what*? A board? What'a they think we're made of? Gray matter with 5,000 fingers?"
I'm no expert, but I guess we could start with standard chess notation, and just show the running log in each "reply"...You'd be able to reset your board by doing all the moves in order on a board if you needed the visuals.
Wanna play Turtle?
(thats in (CODE) blocks, replacing the roundy parens with square brackets)
Ding! Your move!
Buffy