For posting:
- invitations to games (you can also use the New Game menu)
- information about upcoming tournaments
- discussion of games (please limit this to completed games or discussion on how a game has arrived at a certain position ... speculation on who has an advantage or the benefits of potential moves is not permitted)
- links to interesting related sites (non-promotional)
Don't forget that forcing a capture of the king is not the idea... otherwise stalemate would be a win. We still need the king to be in check for a checkmate to be valid.