P4wn
p4wn,
a quite small open source chess engine by Douglas Bagnall, written in JavaScript, released under CC0 or public domain terms, and hosted on GitHub [2].
It runs in web browsers and as standalone JavaScript engine (though less usefully there, without any UI).
The first version was released in 2002 as an entry in a 5k web page competition, and its source code was incomprehensibly succinct.
It used a sort of principal variation search and a piece-square table oracle.
In 2012 it was rewritten for clarity and for performance in modern JavaScript engines. It now uses a plain alpha-beta search and more sophisticated piece-square tables.
p4wn plays by all the rules, though it never claims a draw, just makes the offer and tries to avoid draws if it thinks it is winning. It likes to make rash sacrifices when ahead.
Contents
Forum Posts
- JSUCI 1.0 - connect javascript chess engines to UCI by Edmund Moshammer, CCC, March 28, 2014 » UCI
- ChessGUI (current version) and JavaScript engines part I by Norbert Raimund Leisner, CCC, August 23, 2017 » ChessGUI
- Arena GUI and rules infraction by P4wn Chess - JSUCI by Norbert Raimund Leisner, CCC, November 08, 2017 » Arena
