The strength of RDChess has been evaluated by
- playing against humans. RDChess usually wins, except you are a very professional chess player.
- playing at Leo Dijksman's chess computer test site WBEC Ridderkerk Tournaments
- playing against other computer chess programs in Olivier Deville's Chesswar Tournaments
- playing at Guenther Simon's Regensburger WinBoard Cicuit RWBC
- and many other chess test sites. Look at and search for rdchess in WinBoard Forum.
- RDChess played as computer at the American Free Internet Chess Server FICS. After playing 531 games RDChess had a Blitz score of 2175 and a computer rank of 73.
- with RDChess playing against test suites (see below).
RDChess test suites
There are a few test suites (Bratko-Kopec, Fine, Louguet II, WinAtChess, etc ; annotated with EPD best move tags ) stored for download here on this site.
RDChess has a built in automatic test procedure, which is started with the menu Game-> Run Test suite ...
In the file dialog you select a game library in .pgn format. In the PGN FEN setup string of each game in the library there has to be set an Extended Position Description (EPD) tag "bm" (best moves out from the start position). RDChess plays one move for each position and compares the calculated (searched) move with the stored best move from the "bm" - tag.
If the moves are identical, a hit counter is incremented. At the end of the test run a statistic with the number of test games, number of hits, used time, accumulated total node count etc. is displayed and may be printed: