(updated Dec 2012, FEN Reader replaced by ChessOnline; Dec 2013, use of copgn)
If you wish to show a specific game position, either as part of an annotation for a game or to present a chess puzzle, insert the FEN text for this between square brackets as described here. The example below, uses the text string,
[ r2qk2r/ppp1bppp/3p4/4n2n/2B1P1b1/2NPBN2/PPP3PP/R2Q1RK1 !w !- !- !0 !1 ]
The string has to be exactly right for the board to show up in your post.
If you only see a text string instead of a diagram when you preview your post, double check that you have entered a valid string. Using the FEN editor may help avoid errors in your string.
(you must use the ‘visual’ tab in your post window for the FEN editor symbol to be selectable)
To place an animated graphic of a full game into your post you have a choice of tools.
1) You can insert the pgn text string for the game between tags as described here and shown in the example below.
Your readers can then single-step through the moves, or click the ‘+’ button for auto-play.
(N.B. the above space seems to be an inherent feature of the Embed Chessboard plugin)
2) The ChessOnline tool has now been extended to also deal with pgn.
It is described as experimental, but seems workable, and is shown in the example below.
(though presently lacking a few features such as initialising the display to a specific move, autoplay). Similar to above but use copgn instead of pgn in your tags.(but no parameters within the first set of square brackets).