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119 commits

Author SHA1 Message Date
Marco Costalba
f8bc38a006 Restore original movepick modulo space inflation 
We have a regression somewhere here so restart from zero
and proceed one change at a time.

With this modification we have the same strenght of
"Introduce Stockfish" patch that is our strongest to date.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-26 10:11:13 +01:00
Marco Costalba
5dc2312121 Update copyright info 
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-20 21:47:20 +02:00
Marco Costalba
d3600c39a7 Update copyright info 
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-19 20:43:33 +01:00
Marco Costalba
94f1b31484 movegen: revert see ordering in score_captures() 
It works better with MVV ordering.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-18 21:35:33 +02:00
Marco Costalba
158911425b Space inflate movegen.cpp 
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-18 21:35:33 +02:00
Marco Costalba
cf8ee79b76 Movepick: add and use find_best_index() helper 
This removes a bunch of redundant code.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-18 21:35:33 +02:00
Marco Costalba
06d6468ce9 Test with see 
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-18 21:35:33 +02:00
Marco Costalba
173ecc0acf Use MVV to score captures when see >=0 
This fix a couple of dubious bugs in MVV/LVA
ordering.

Tests seems to confirm now is slightly better.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-18 21:35:32 +02:00
Marco Costalba
2943e1ca31 MovePicker: use const reference instead of pointers 
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-18 21:35:32 +02:00
Marco Costalba
486ec580f9 Space inflate movepick.cpp 
Also added some FIXME to dubious points.

Still no functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-18 21:35:32 +02:00
Marco Costalba
a930aafce0 Better comment previous patch 
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-18 21:35:32 +02:00
Marco Costalba
b3744eb4d0 Always add psqt scoring 
When there is also history, history is always
preferred.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-18 21:35:32 +02:00
Marco Costalba
a03ab94f44 Shortcut sorting when no move is in history 
An alternative algorithm to psqt scoring.

Still unclear what is the best, more tests needed.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-18 21:35:20 +02:00
Marco Costalba
644db060ae Add psqt ordering when there is no history 
This seems to increase strenght (about 15 ELO),
still to test some variations on this theme that
could increase ELO even more.

Idea from Rebel (http://members.home.nl/matador/chess840.htm)

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-15 07:18:05 +01:00
Marco Costalba
58c7a5c477 Workaround a static data member bug in MSVC 
Without this patch MSVC crashes when compiled
in release mode. It survives and works as
expected in debug mode and with gcc and Intel
compilers.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-13 20:40:47 +02:00
Marco Costalba
bbf7a94d76 Better interface to get the current move type 
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-06 05:44:23 +02:00
Marco Costalba
310e07f292 Teach MovePicker::get_next_move() to return move type 
This will be used in future patches.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-10-06 05:44:22 +02:00
Marco Costalba
52487c4f04 MovePicker: simplify move swapping 
We don't need a full swap here because once found
and returned the best move will not be used again.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
 2008-09-18 12:26:10 +02:00
Marco Costalba
bb751d6c89 Initial import of Glaurung 2.1 2008-09-01 07:59:13 +02:00