Marco Costalba 64d6ba2e98 Do not claim repetition after null move ...

Null moves can artificially create a repetition
draw where instead there is no one.

So use a second counter to reset history after
a null move.

Idea from Joona.

After 999 games at 1+0

Mod vs Orig +238 =553 -208 51.50%  514.5/999  +10 ELO

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

2009-10-09 03:55:10 +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

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bitbase.cpp

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bitbase.h

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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

…

color.h

Use string instead of std::string

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

COPYING

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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

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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

Small touches to increased mobility patch

2009-10-04 06:59:06 +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

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mersenne.h

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misc.cpp

Restore development version

2009-10-08 15:16:47 +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

Remove a redundant assignment in PawnInfo c'tor

2009-10-06 09:18:15 +01:00

piece.cpp

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piece.h

Retire piece_is_slider(PieceType pt)

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

position.cpp

Do not claim repetition after null move

2009-10-09 03:55:10 +01:00

position.h

Do not claim repetition after null move

2009-10-09 03:55:10 +01:00

psqtab.h

Joona tweaks of piece values

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

san.cpp

Display fail high/fail low in search log file.

2009-10-06 12:51:15 +02:00

san.h

Display fail high/fail low in search log file.

2009-10-06 12:51:15 +02:00

scale.h

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search.cpp

Restore development version

2009-10-08 15:16:47 +01:00

search.h

Remove global variables from search.h

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

square.h

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thread.h

Revert per-thread history tables

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

tt.cpp

Fix bogus comment in extract_pv()

2009-10-06 11:15:05 +01:00

tt.h

Small code reformat in TranspositionTable::extract_pv()

2009-10-06 07:14:12 +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

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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

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value.h

Save static evaluation also for failed low nodes

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