Purple Haze is a free chess engine compatible with the Xboard protocol. It is written by Vincent Ollivier and distributed under the terms of the GNU General Public License version 3.
Vincent Ollivier wrote:It has been six months since the previous release and during this time Purple Haze has made good progress. It should not be too far below 2000 ELO by now.
git diff v2.0.3 v2.1.0 --shortstat
52 files changed, 1544 insertions(+), 971 deletions(-)
This version mostly contains bug fixes and code improvements but I can now begin to focus solely on tuning the weights of my evaluation function. Preliminary test results show that there is much to gain in this area.