WP-ChessFlash

Allows display of a interactive chessgame using the ChessFlash PGN viewer in posts and comments. Most of the settings of the Chessflash can be set either through adding parameters to the [pgn] tags or through the options page.

NB ChessFlash PGN viewer has been followed up by KnightVision, this plugin still uses the older version.

Usage:

• paste pgn-code between [pgn] [/pgn] tags
• use of parameters with their default values: [pgn height=350 tabmode=false flipboard=false initialply=22]…[/pgn]
• additional parameters (puzzle, twoboards, boardonly) must first be allowed in options page
• colors and piece characters can be set in options page

ChessFlash has been replaced with KnightVision. Why doesn’t this plugin use that newer viewer?

I plan to update to the KnightVision version, but then I will probably use a new name for the plugin as well.

Why can’t I see the vieuwer on mobile devices?

The viewer uses Flash, which unfortunately doesn’t work on tablets and mobile phones.

Why are the chess pieces different from those on [chessflash.com](http://chessflash.com/chessflash.html)?

I recompiled chessflash.swf with a different piece set for use in Jin: merida.ead-01.zip. The original piece set didn’t match the diagrams I use on the website of my chess club. You can replace chessflash.swf in the plugin directory with the original version to get the original pieces.

1.2

• bug fixes for WordPress 4.0.1

1.1

• fixed the checkboxes to allow ‘boardonly’ and ‘puzzle’ tags
• added some text to explain ‘initialply=xx’ option

1.0

• using Chessflash version 2.16 with Merida piece set
• new parameter (initalply=xx)to start the player at specific ply number

0.9

• using Chessflash version 2.13 (now possible to change piece characters);
• introduced options page to set colors and piece characters and allow extra parameters;
• added transparency to flash object to avoid dropdown menus falling behind object;
• known issue: Firefox has problem with transparency -> playback with arrowkeys is not OK (one click is 2 plies). This is an known Firefox problem, not yet fixed in Firefox 3.5.2.

0.5

• added possibility to change some of the parameters with attributes in the [pgn] opening tag. Eg [pgn height=350 tabmode=false flipboard=false] [/pgn].

0.4

• resolved the problem of the replacement of ‘…’ by WordPress.

0.3

• resolved the problem of pgn-files being too big by using a more low-level approach at filtering out the pgn-codes. Problem was caused by a memory limit in preg_replace_callback;
• known issue: wordpress removes … and replaces this with something else. The chesscode works anyway.

0.2

• encoding of the pgn-data now in plugin, so you can paste in normal pgn-data between the tags;
• bug: does not work with larger pgn-data, not caused by Chessflash.swf -> has to do something with the way the pgn-data is filtered from the content.

0.1

• reworked code from plugin show-fen a bit to find the pgn-code in between [pgn] [/pgn] tags;
• seems to work with using ChessFlash.swf locally and pasting encoded pgn-data (from http://chessflash.com/chessflash.html).

1. Upload directory wp-chessflash to to the /wp-content/plugins/ directory
2. Activate the plugin through the ‘Plugins’ menu in WordPress
3. Customize the viewer through the options page in the ‘Settings’ menu in WordPress