Eelco de Groot 55a3e0af8d Don't special case for abs(beta) >= VALUE_MATE_IN_MAX_PLY ...

Remove from the search this special case and apply
null search and razoring also in mate positions.

Tested in no-regression mode and passed both

STC
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 65431 W: 10860 L: 10810 D: 43761

and LTC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 34928 W: 4814 L: 4713 D: 25401

This patch kicks in only in mate positions and in
these cases it seems beneficial in finding mates
faster as Yery Spark measured on the Chest mate suite:

Total number of positions 6425
Fixed nodes 200K per position

master: 1049
new:    1154

And also the 5446 'hard' positions again with 2000K nodes
(those not found by both engines in 200K nodes):

master: 1069
new:    1395

bench: 7710548

2014-06-16 21:50:14 +02:00

..

benchmark.cpp

Add perft 'divide' command

2014-05-24 09:56:32 +02:00

bitbase.cpp

Fix a warning with MSVC in 'analyze' mode

2014-06-14 12:46:58 +02:00

bitboard.cpp

Switch to hardware PEXT

2014-04-12 08:55:30 +02:00

bitboard.h

Revert "Generalize shift_bb() to handle double pushes"

2014-04-21 20:56:12 +02:00

bitcount.h

Update copyright year

2014-01-02 01:49:18 +01:00

endgame.cpp

Revert back KBPsK to latest Gary's version

2014-05-04 09:34:22 +02:00

endgame.h

Simplify pawnless endgame evaluation

2014-01-18 17:22:54 +01:00

evaluate.cpp

Simplify unstoppable pawns

2014-06-16 12:39:50 +02:00

evaluate.h

Small renaming in Tracing

2014-06-09 05:30:18 +09:00

main.cpp

Move args parsing to UCI::loop

2014-04-12 13:51:52 +02:00

Makefile

Remove -ansi flag for Clang

2014-06-15 10:31:57 +02:00

material.cpp

Make imbalance table more clear

2014-05-10 08:54:31 +02:00

material.h

Reformatting in material.h

2014-04-27 09:31:22 +02:00

misc.cpp

Restore development version

2014-05-31 23:34:36 +02:00

misc.h

Additional renaming from DON

2014-02-14 09:42:50 +01:00

movegen.cpp

Minor stuff scattered around

2014-04-28 17:07:43 +02:00

movegen.h

Update copyright year

2014-01-02 01:49:18 +01:00

movepick.cpp

Fix issues detected by Coverity Scan

2014-04-26 09:33:50 +02:00

movepick.h

Sync some common names

2014-04-06 11:26:12 +02:00

notation.cpp

Remove some useless casts

2014-04-27 11:44:16 +02:00

notation.h

Some more work in pretty_pv

2014-04-06 10:15:11 +02:00

pawns.cpp

Factor out pawn attacks in 'lever'

2014-06-14 12:20:54 +02:00

pawns.h

More readable trapped rook condition

2014-04-13 14:29:42 +02:00

platform.h

Update copyright year

2014-01-02 01:49:18 +01:00

position.cpp

Use unsigned char as argument of std::isspace

2014-06-07 01:21:47 +02:00

position.h

Sync some common names

2014-04-06 11:26:12 +02:00

psqtab.h

Remove RookOn7th and merge values into psqt

2014-04-24 08:53:46 +02:00

rkiss.h

Move magic random to RKISS

2014-02-12 14:47:36 +01:00

search.cpp

Don't special case for abs(beta) >= VALUE_MATE_IN_MAX_PLY

2014-06-16 21:50:14 +02:00

search.h

Avoid to use nullChild

2014-06-06 11:12:05 +02:00

thread.cpp

Add some const qualifier

2014-06-03 11:43:52 +02:00

thread.h

Retire "Idle Threads Sleep" UCI option

2014-05-11 10:29:56 +02:00

timeman.cpp

Don't need floor() in timeman.cpp

2014-04-27 19:10:00 +02:00

timeman.h

Fix Intel compiler warnings

2014-04-27 12:02:36 +02:00

tt.cpp

Fix a warning with MSVC 2010

2014-03-30 14:25:57 +02:00

tt.h

Tidy up tt.h

2014-05-25 00:02:09 +02:00

types.h

Revert "Score extractors"

2014-06-05 23:55:18 +02:00

uci.cpp

Triviality in UCI::loop

2014-06-14 12:26:08 +02:00

ucioption.cpp

Retire Polyglot Book management

2014-06-01 15:29:34 +02:00

ucioption.h

Move args parsing to UCI::loop

2014-04-12 13:51:52 +02:00