There are a number of systems for capturing the position of a chess board or dynamics of a chess game. It would be nice to see one or more of them incorporated into FedWiki, to be able to capture a game or otherwise facilitate descriptions or discussion of chess. See About Chess Plugin
# Examples and use cases
One use case would be creating a record of games from chess.com, which seems to record its games in PGN notation, permitting one to step forward and back in the wiki interface, present a dynamic "screenshot" of a certain board position permitting forward-and-back exploration, captions...
(It seems that chess.com makes it difficult to copy the text, at least for free accounts. That's a problem that's well beyond the scope of a simple wiki plugin to address; so, manually typing in the PGN may be necessary.)
Here's a game from chess.com, which contains some annotation. I believe this is PGN annotation. chess.com 
# See also
* A chess site that looks like a simple way to play against a pre-determined opponent: plainchess.timwoelfle.de