For posting: - invitations to games (you can also use the New Game menu or go straight to the Chess Invitation) - 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)
Scid is an applications program in which internet datatbases can be downloaded, PGN for instance. Scid then converts the PGN file into a "scid" file that allow the moves to be replayed on their chess board. There are search engines to find the games you want from the database by ECO, or a given position, or a particular player, etc...
(hide) If you want to find an opponent with similar playing skills to your own look in the Ratings page of the type of game you want and find a player with a similar BKR. (pauloaguia) (show all tips)