just wanted to mention a new method for showing chess games in drupal articles, based on the pgn4web tool (http://pgn4web.casaschi.net)

the users of your drupal site will be able to insert graphical chess games using a new defined bbcode tag "pgn"

to enable the functionality, follow instructions at http://code.google.com/p/pgn4web/wiki/User_Notes_drupal

see demo at http://pgn4web-test-drupal.casaschi.net