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EXchess - experimental chess engine (capable of beating Crafty)

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jlam 2000-10-25 08:40:00 +00:00
parent 5b56ecc37d
commit b89efb04df
12 changed files with 215 additions and 0 deletions
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30
games/exchess/Makefile Normal file
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# $NetBSD: Makefile,v 1.1.1.1 2000/10/25 08:40:00 jlam Exp $
DISTNAME= EXCH314S
PKGNAME= exchess-3.14
CATEGORIES= games
MASTER_SITES= http://pc.astro.brandeis.edu/BRAG/people/dch/
EXTRACT_SUFX= .zip
MAINTAINER= jlam@netbsd.org
HOMEPAGE= http://pc.astro.brandeis.edu/BRAG/people/dch/chess.html
NO_WRKSUBDIR= # defined
NO_CONFIGURE= # defined
LIBDIR= ${PREFIX}/lib/exchess
DOCDIR= ${PREFIX}/share/doc/exchess
post-extract:
cd ${WRKSRC} && ${MV} search.par search.par.in
${CP} ${FILESDIR}/Makefile ${WRKSRC}
post-build:
${SED} -e "s,@PREFIX@,${PREFIX},g" \
< ${WRKSRC}/search.par.in > ${WRKSRC}/search.par
post-install:
${INSTALL_DATA_DIR} ${DOCDIR}
${INSTALL_DATA} ${WRKSRC}/readme.txt ${DOCDIR}
.include "../../mk/bsd.pkg.mk"

26
games/exchess/files/Makefile Normal file
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# $NetBSD: Makefile,v 1.1.1.1 2000/10/25 08:40:00 jlam Exp $
BINDIR= ${PREFIX}/bin
LIBDIR= ${PREFIX}/lib/exchess
CPPFLAGS= -DEXCHESS_DIR=\"${LIBDIR}/\"
OBJS= attacks.o book.o check.o exmove.o hash.o main.o movelist.o
OBJS+= parse.o pcapts.o pmoves.o probe.o score.o search.o setup.o
OBJS+= sort.o swap.o util.o
all: exchess
exchess: ${OBJS}
${CXX} -o ${.TARGET} ${OBJS} -lm
install: exchess
${BSD_INSTALL_PROGRAM_DIR} ${BINDIR}
${BSD_INSTALL_PROGRAM} exchess ${BINDIR}
${BSD_INSTALL_DATA_DIR} ${LIBDIR}
${BSD_INSTALL_DATA} search.par ${LIBDIR}
.SUFFIXES: .cpp
.cpp.o:
${CXX} ${CXXFLAGS} ${CPPFLAGS} -c ${.IMPSRC}

3
games/exchess/files/md5 Normal file
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$NetBSD: md5,v 1.1.1.1 2000/10/25 08:40:00 jlam Exp $
MD5 (EXCH314S.zip) = 36ac1ebff0f61b91fe4076a76fd4955b

7
games/exchess/files/patch-sum Normal file
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$NetBSD: patch-sum,v 1.1.1.1 2000/10/25 08:40:00 jlam Exp $
MD5 (patch-aa) = 0239932bd835b3a30975dd9324f4faf9
MD5 (patch-ab) = 8f1185e19a2c05e34299e9bad2214505
MD5 (patch-ac) = 63fd37e3067b490fcf2270c339c14abd
MD5 (patch-ad) = d84bc6cdf33588a7c67c53a8204a60e0
MD5 (patch-ae) = a693341c00a78c346d901dd0c2777dcd

22
games/exchess/patches/patch-aa Normal file
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$NetBSD: patch-aa,v 1.1.1.1 2000/10/25 08:40:00 jlam Exp $
--- book.cpp.orig Sun Apr 30 09:56:26 2000
+++ book.cpp
@@ -52,7 +52,7 @@
char outbook[100];
position temp_pos; // temporary position
move bmove; // book move under consideration
- unsigned __int64 pcode; // hash code for position
+ u_int64_t pcode; // hash code for position
int i = -1, j = 0, k = 0, p; // loop variables
int count = 0, thresh, LINE_DEPTH; // control variables
@@ -245,7 +245,7 @@
{
file_pos = 0;
int jump = int(file_size/2);
- unsigned __int64 pcode = ZERO;
+ u_int64_t pcode = ZERO;
temporary_pos = p;
if(!exec_move(&temporary_pos, m, 1)) return 0;

13
games/exchess/patches/patch-ab Normal file
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$NetBSD: patch-ab,v 1.1.1.1 2000/10/25 08:40:00 jlam Exp $
--- chess.h.orig Sat Feb 19 11:28:46 2000
+++ chess.h
@@ -86,7 +86,7 @@
// Structure for position in the opening book
struct book_rec {
- unsigned __int64 pos_code; // position hash code
+ u_int64_t pos_code; // position hash code
int score; // score for position
int gambit; // flag for gambit play
};

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games/exchess/patches/patch-ac Normal file
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$NetBSD: patch-ac,v 1.1.1.1 2000/10/25 08:40:00 jlam Exp $
--- define.h.orig Sun Apr 30 10:02:28 2000
+++ define.h
@@ -4,25 +4,26 @@
#ifndef DEFINE_H
#define DEFINE_H
+#include <inttypes.h>
+
#define VERS 3.14 // program version number
#define MAXD 60 // max search depth
#define MATE 10000000 // mate score
// Compiler flags for different systems
-#define BORLAND 1 // Selects a win95/NT compiler if set to 1
+#define BORLAND 0 // Selects a win95/NT compiler if set to 1
// this should work with MSVC and others as
// well
#define DEC 0 // Set to 1 for certain DEC Unix systems, not
// all will need it - some other unixes may
// need this if there are errors in "book.cpp"
-#define UNIX 0 // Set to 1 for all Unix systems
+#define UNIX 1 // Set to 1 for all Unix systems
#define DOS 0 // Set to 1 for Auto232 DOS mode
#define DEBUG 0 // Set to 1 to debug mode... quite slow
// define 64 bit integers
#if !BORLAND
- #define __int64 long long
- #define ZERO 0ULL
+ #define ZERO 0
#else
#define ZERO 0ui64
#endif

39
games/exchess/patches/patch-ad Normal file
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$NetBSD: patch-ad,v 1.1.1.1 2000/10/25 08:40:00 jlam Exp $
--- main.cpp.orig Sat Apr 1 07:46:20 2000
+++ main.cpp
@@ -17,6 +17,7 @@
#if UNIX
#include <sys/types.h>
#include <sys/time.h>
+ #include <unistd.h>
#else
#include <windows.h>
#include <time.h>
@@ -56,7 +57,7 @@
extern int ponder, last_ponder, learn_count, learned;
extern unsigned long TAB_SIZE, PAWN_SIZE;
-// executable directory
+// exchess opening book and search parameters directory
char exec_path[100];
// performance function
@@ -93,16 +94,7 @@
learn_count = 0; learned = 0; learn_bk = 1; shout_book = 0;
- strcpy(exec_path, argv[0]);
- // parsing exec path
- int last_slash = 0;
- for(int j = 0; j < 100; j++) {
- if(exec_path[j] == '\0') break;
- if(exec_path[j] == '\\') last_slash = j;
- if(exec_path[j] == '/') last_slash = j;
- }
-
- exec_path[last_slash+1] = '\0';
+ strcpy(exec_path, EXCHESS_DIR);
/* initializing hash tables, check tables, scoring parameters,
and the random number seed and tablebases */

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games/exchess/patches/patch-ae Normal file
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$NetBSD: patch-ae,v 1.1.1.1 2000/10/25 08:40:00 jlam Exp $
--- search.par.in.orig Sun Apr 30 09:59:16 2000
+++ search.par.in
@@ -20,7 +20,7 @@
# Endgame Tablebases - if you have them installed
-EGTB_PATH c:\projects\exchess\tb
+EGTB_PATH @PREFIX@/share/egtb
EGTB_CACHE_SIZE 2.0 # Tablebase cache size in megabytes
# Log File
@@ -32,7 +32,7 @@
GAMBIT_SCORE 80 # Maximum gambit allowed
BOOK_FILE open_bk.dat # Name of the opening book file
-BOOK_LEARNING 1 # Set to 0 for no book learning
+BOOK_LEARNING 0 # Set to 0 for no book learning
# Search Extensions
#

1
games/exchess/pkg/COMMENT Normal file
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experimental chess engine

11
games/exchess/pkg/DESCR Normal file
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EXchess is an experimental chess engine supporting the following features:
* Support for Tim Mann's XBoard.
* Analysis features of XBoard.
* Brute force searches to 60 ply (1 ply = a move by one side).
* Hash tables for storing positions already visited in the search.
* Pondering. (Thinking on the opponent's time.)
* Recursive null move pruning.
* Quiescent capture search.
* Adjustable hash table size.
* Adjustable search and evaluation parameters.

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games/exchess/pkg/PLIST Normal file
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@comment $NetBSD: PLIST,v 1.1.1.1 2000/10/25 08:40:00 jlam Exp $
bin/exchess
lib/exchess/search.par
share/doc/exchess/readme.txt
@dirrm share/doc/exchess
@dirrm lib/exchess