This is the version that played in the recent CCT-13 tournament.
Changes in Arasan 12.3:
1) Changes to move ordering in qsearch - formerly we used to call see()
in the initial move sorting phase but now it is deferred until we
are ready to use a move - this is how most programs do it.
2) Linux version uses an ASM routine (if USE_ASM is defined) for
bit extraction - this is much faster (on CPUs that support it).
3) Small fix to pin detection.
4) Bug fixes in scoring: specifically in adjustMaterialScoreNoPawns,
outpost scoring, potential passer scoring, passer piece block.
5) Reduce penalty for open files around king (was excessive)
6) Qsearch futility prune margin increased back to 1 1/4 pawn. Changes
to LMR reduction depth and thresholds.
7) Endgame capture extension is made in more cases but is decreased to
1/2 ply extra depth
8) Several UCI protocol fixes.
download from http://www.arasanchess.org.
Arasan 12.3 released
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Re: Arasan 12.3 released
You know it's a good day in computer chess land when there's a new Arasan, a new Spike, and a new Pawny.
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Re: Arasan 12.3 released
+1tmokonen wrote:You know it's a good day in computer chess land when there's a new Arasan, a new Spike, and a new Pawny.
_No one can hit as hard as life.But it ain’t about how hard you can hit.It’s about how hard you can get hit and keep moving forward.How much you can take and keep moving forward….