Ideas from @philcmonk for custom chess channels in %groups:
Community chessboard: you can open the channel and sit down if it's free, or observe if it's not and also get in line to sit down
Multiboard view: observe multiple chess boards at the same time, for example if watching a tournament. Could hook this up to some API (e.g. Chess.com or lichess) and stream games from them in Urbit
Multiboard play: that thing good chess guys do in the park where they play 10 games at the same time
Ideas from @philcmonk for custom chess channels in
%groups
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