]> git.sesse.net Git - stockfish/commit - src/misc.h
Merge Joona's razoring tweaks
authorMarco Costalba <mcostalba@gmail.com>
Tue, 28 Apr 2009 06:51:11 +0000 (08:51 +0200)
committerMarco Costalba <mcostalba@gmail.com>
Tue, 28 Apr 2009 07:00:09 +0000 (09:00 +0200)
commitf1d982e2c07372627394b83cf24f48e77a34145b
treec22cccde9336bd0f53c49b4f2f9f9c15e260c407
parentfbca16da570756f5220b229845e566bd05aa3ce8
parentbd26374f2105dcbbafeb3376d4fcce24d78ba215
Merge Joona's razoring tweaks
After proof testing on 3 different engines these
are the results:

Stockfish - Toga II 1.4.1SE +130 -132 =132 49.75%
Stockfish - Deep Sieng 3.0  +145 -110 =150 54.45%
Stockfish - HIARCS 12 MP    +94  -149 =150 43.00%

So it seems no regressions occurs, although also no
improvment. But anyhow this patch increases Stockfish
strenght against itself, so merge it.

Note that this patch not only adds back razoring at depth
one, but also increases razor depth limit from 3 to 4
because hard coded depth 4 limit is no more overwritten
by UCI parameter that otherwise defaults to 3.
src/search.cpp
src/ucioption.cpp