1
0
Fork 0
mirror of https://github.com/sockspls/badfish synced 2025-05-02 01:29:36 +00:00
Commit graph

11 commits

Author SHA1 Message Date
mstembera
46b5a5f0db Fix syzygy en passant issue
v = value without ep capture being considered
v1 = value of the ep capture

The correct logic is:
if without e.p. capture we are losing, and the value of e.p is either draw, or win or "loss, but 50 move rule saves us", then we should use the value of ep capture.

Credit and thanks to syzygy1 and lantonov !

No functional change (except with syzygy bases)

Resolves #415
Resolves #394
2015-09-06 22:19:33 +01:00
lucasart
dc13004283 Compute checkers from scratch
This micro-optimization only complicates the code and provides no benefit.
Removing it is even a speedup on my machine (i7-3770k, linux, gcc 4.9.1):

stat        test     master    diff
mean   2,403,118  2,390,904  12,214
stdev     12,043     10,620   3,677

speedup       0.51%
P(speedup>0) 100.0%

No functional change.
2015-02-15 12:11:05 +01:00
Marco Costalba
712bbb052e Fix compile error with MSVC 2013
Without this std::min chokes with windows 'min' macro.

No functional change.
2015-01-18 15:14:05 +01:00
Marco Costalba
c73f33f37e Fix syzygy warnings with Intel compiler
Quick hack, a better job would require to
first move all syzygy code up to SF standard.

No functional change.
2015-01-18 07:29:51 +01:00
Marco Costalba
b97df4c236 Fix a crash of syzygy on Android
On Android-ARM current TB code crashes at
random times even in single thread mode.

Reported, debugged, fixed and verified
by Peter Osterlund.

No functional change.

Resolves #201
2015-01-11 20:10:31 +00:00
Gary Linscott
0edb6348d2 Fix compile for some versions of mingw
The bswap intrinsics are specific to the compiler, not the
host platform.

No functional change.

Resolves #155
2014-12-14 14:45:43 -05:00
Gary Linscott
7b4828b68c Only use _ReadWriteBarrier on MSVC
It was causing compile errors when cross-compiling using mingw.

No functional change.
2014-12-11 14:56:24 -05:00
Gary Linscott
afafdf7b73 MSVC compiling fixes
No functional change.

Resolves #150
2014-12-11 13:03:44 -05:00
Marco Costalba
ba1464751d Explicitly pass RootMoves to TB probes
Currently Search::RootMoves is accessed and even
modified by TB probing functions in a hidden
and sneaky way.

This is bad practice and makes the code tricky.
Instead explicily pass the vector as function
argument so to clarify that the vector is modified
inside the functions.

No functional change.
2014-12-06 15:08:21 +00:00
hxim
c014444f09 Remove CONNECTED_KINGS from Syzygy code
No functional change

Resolves #140
2014-11-30 20:24:32 +00:00
Ronald de Man
7caa6cd338 Syzygy tablebases
Adds support for Syzygy tablebases to Stockfish.  See
the Readme for information on using the tablebases.

Tablebase support can be enabled/disabled at the Makefile
level as well, by setting syzygy=yes or syzygy=no.

Big/little endian are both supported.

No functional change (if Tablebases are not used).

Resolves #6
2014-11-26 07:49:58 +08:00