Interesting and rich content, however there are something which can be
improved:
* images are missing in many articles (for example in
http://www.chess-dictionary-chesmayne.net/Chaturanga.htm)
* background sometimes make the text difficult to read (for example
background in red color)
* some articles use too much links, for example:
http://www.chess-dictionary-chesmayne.net/Shatranj.htm.