Winboard Forum

New GreKo version is available at
http://greko.chess.googlepages.com

Main changes are:

(fix) * Fixed bug with "..." in UCI mode under Arena.
(fix) * Fixed: do not leave search with empty root pv.
(chg) * Faster search: do not copy pv in beta nodes.
(chg) * Turned off nullmove and LMR on PV.
(chg) * Generate checks in qsearch only on qply == 0.
(chg) * SEE delta pruning in qsearch on qply > 1.
(chg) * Small changes in code formatting.
(chg) * Small changes in popcount function.

Regards,
Vladimir

Thanks Vladimir

GreKo updated in current ChessWar

Olivier

Vladimir Medvedev wrote:New GreKo version is available at
http://greko.chess.googlepages.com

Main changes are:

(fix) * Fixed bug with "..." in UCI mode under Arena.
(fix) * Fixed: do not leave search with empty root pv.
(chg) * Faster search: do not copy pv in beta nodes.
(chg) * Turned off nullmove and LMR on PV.
(chg) * Generate checks in qsearch only on qply == 0.
(chg) * SEE delta pruning in qsearch on qply > 1.
(chg) * Small changes in code formatting.
(chg) * Small changes in popcount function.

Regards,
Vladimir

Many thanks Vlad!

I have nothing else to do here so I tried making some all-purpose builds plus a 64-bit too, while waiting for Master Jim's faster comples .

My rough estimate for engine speed-up was around 35% (from 32-bit to 64-bit) - not bad! It really shows the advantage of using bitboards.

http://computerchessengines.mylivepage. ... ileid=4068