Marco Costalba 3713bb26ef Don't increase mobility if attacked piece is defended by a pawn ...

If an enemy piece is defended by a pawn don't give the
extra mobility bonus in case we attack it.

Joona says that "Paralyzing pawn" is usually worth of nothing.

On Joona QUAD after 964 games:
Orig - Patch_2: 191 - 218 - 555 (+ 10 elo)

On my PC after 999 games at 1+0:
Mod vs Orig +227 =550 -222 50.25%  502.0/999  +2 ELO

In both cases we tested against the original version (without
increased mobility), not against the previous patch that instead
seems to fail on Joona QUAD:
Orig vs. Prev.Patch: 237 - 217 - 627 (-6 elo)

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

2009-10-03 10:48:07 +01:00

..

application.cpp

Clean killers handling in movepicker

2009-08-26 15:38:47 +01:00

application.h

Remove unused members in Application class

2009-07-26 16:11:20 +01:00

benchmark.cpp

Add support for saving timing file during benchmark

2009-07-04 10:32:51 +01:00

benchmark.h

Update copyright year

2009-05-07 14:54:40 +02:00

bitbase.cpp

Update copyright year

2009-05-07 14:54:40 +02:00

bitbase.h

Update copyright year

2009-05-07 14:54:40 +02:00

bitboard.cpp

Remove a local variable from pop_1st_bit()

2009-08-23 18:55:07 +01:00

bitboard.h

Use optimized pop_1st_bit() under Windows 64 with icc

2009-08-14 12:47:49 +01:00

bitcount.h

Fix bitcount.h compile warnings under Intel compiler

2009-07-04 18:10:39 +01:00

book.cpp

Simplify move legality check for uncommon cases

2009-09-22 07:07:18 +01:00

book.h

Update copyright year

2009-05-07 14:54:40 +02:00

color.h

Use string instead of std::string

2009-05-10 18:38:47 +01:00

COPYING

Initial import of Glaurung 2.1

2008-09-01 07:59:13 +02:00

depth.h

Directly relate HistoryMax to OnePly

2009-05-20 14:43:17 +02:00

direction.cpp

Space inflate and cleanup direction.cpp

2009-05-20 12:02:39 +02:00

direction.h

Update copyright year

2009-05-07 14:54:40 +02:00

endgame.cpp

Rename piece_attacks_from() in attacks_from()

2009-09-20 14:55:28 +01:00

endgame.h

Better naming and document some endgame functions

2009-08-14 08:19:55 +01:00

evaluate.cpp

Don't increase mobility if attacked piece is defended by a pawn

2009-10-03 10:48:07 +01:00

evaluate.h

Small code style in headers

2009-05-20 15:11:41 +02:00

history.cpp

Reduce history 4 times instead of 2 when reach the maximum

2009-05-20 09:03:15 +02:00

history.h

Directly relate HistoryMax to OnePly

2009-05-20 14:43:17 +02:00

lock.h

Use WIN32_LEAN_AND_MEAN in lock.h

2009-09-17 14:18:44 +01:00

main.cpp

Add support for saving timing file during benchmark

2009-07-04 10:32:51 +01:00

Makefile

Added a few new targets to the Makefile for OS X with icpc.

2009-08-21 10:50:34 +02:00

material.cpp

Second take at unifying bitboard representation access

2009-09-04 08:21:06 +01:00

material.h

Better naming and document some endgame functions

2009-08-14 08:19:55 +01:00

mersenne.cpp

Warnings termination fest

2008-09-24 00:32:53 +02:00

mersenne.h

Update copyright year

2009-05-07 14:54:40 +02:00

misc.cpp

Change back file mode of misc.cpp

2009-09-27 07:58:28 +01:00

misc.h

Use string instead of std::string

2009-05-10 18:38:47 +01:00

move.cpp

Micro optimize and rename move_promotion()

2009-06-20 09:04:32 +01:00

move.h

Micro optimize and rename move_promotion()

2009-06-20 09:04:32 +01:00

movegen.cpp

Micro optimization of generate_piece_moves()

2009-09-24 07:11:39 +01:00

movegen.h

Simplify move legality check for uncommon cases

2009-09-22 07:07:18 +01:00

movepick.cpp

MovePicker: rename number_of_moves() in number_of_evasions()

2009-08-31 15:32:31 +02:00

movepick.h

MovePicker: rename number_of_moves() in number_of_evasions()

2009-08-31 15:32:31 +02:00

pawns.cpp

Store pawn attacks in PawnInfo

2009-09-30 16:11:37 +01:00

pawns.h

Store pawn attacks in PawnInfo

2009-09-30 16:11:37 +01:00

piece.cpp

Update copyright year

2009-05-07 14:54:40 +02:00

piece.h

Retire piece_is_slider(PieceType pt)

2009-09-04 08:21:07 +01:00

position.cpp

Micro optimization of generate_piece_moves()

2009-09-24 07:11:39 +01:00

position.h

Micro optimization of generate_piece_moves()

2009-09-24 07:11:39 +01:00

psqtab.h

Joona tweaks of piece values

2009-07-02 06:29:14 +01:00

san.cpp

Micro optimize and rename move_promotion()

2009-06-20 09:04:32 +01:00

san.h

Update copyright year

2009-05-07 14:54:40 +02:00

scale.h

Update copyright year

2009-05-07 14:54:40 +02:00

search.cpp

Optimize futilityValue calculation

2009-09-30 16:11:41 +01:00

search.h

Remove global variables from search.h

2009-06-12 13:10:40 +02:00

square.h

Update copyright year

2009-05-07 14:54:40 +02:00

thread.h

Revert per-thread history tables

2009-07-02 06:29:25 +01:00

tt.cpp

Save static evaluation also for failed low nodes

2009-09-20 20:05:40 +01:00

tt.h

Reuse 5 slots instead of 4

2009-08-14 08:13:13 +01:00

types.h

L1/L2 friendly PhaseTable[]

2009-08-15 16:09:10 +01:00

uci.cpp

Small tidy up of previous patch

2009-07-10 18:50:43 +01:00

uci.h

Update copyright year

2009-05-07 14:54:40 +02:00

ucioption.cpp

Temporarily removed the unfinished UCI_Elo code in preparation for

2009-09-29 13:40:00 +02:00

ucioption.h

Use string instead of std::string

2009-05-10 18:38:47 +01:00

value.cpp

Update copyright year

2009-05-07 14:54:40 +02:00

value.h

Save static evaluation also for failed low nodes

2009-09-20 20:05:40 +01:00