diff -Nur games.orig/crafty/Makefile games/crafty/Makefile
--- games.orig/crafty/Makefile	2009-03-22 13:37:58.000000000 +0000
+++ games/crafty/Makefile	2009-03-22 13:46:22.000000000 +0000
@@ -24,7 +24,7 @@
 USE_ZIP=	yes
 USE_GMAKE=	yes
 
-BOOKS=		book.bin books.bin
+BOOKS=		books.bin
 DISTFILES+=	${BOOKS:S/$/:books/}
 
 .if !defined(NOPORTDOCS)
@@ -58,11 +58,23 @@
 BROKEN=		Does not compile on sparc64
 .endif
 
+.if defined(WITH_BOOK)
+BOOKS+=		book.bin
+DISTFILES+=	${BOOKS:S/$/:books/}
+PKGNAMESUFFIX=	-open-default
+CONFLICTS+=	crafty-open-enormous-* crafty-open-large-* crafty-open-medium-*
+PLIST_SUB+=	BOOK=""
+.else
+PLIST_SUB+=	BOOK="@comment "
+.endif
+
 MAKE_ENV+=	opt="${OPT}" target=${OPSYS} CXFLAGS="${CXXFLAGS}"
 
 post-extract:
 	${CP} ${DISTDIR}/${DIST_SUBDIR}/start.pgn ${WRKSRC}/start.pgn
+.if defined(WITH_BOOK)
 	${CP} ${DISTDIR}/${DIST_SUBDIR}/book.bin ${WRKSRC}/book.bin
+.endif
 	${CP} ${DISTDIR}/${DIST_SUBDIR}/books.bin ${WRKSRC}/books.bin
 
 post-build:
@@ -75,7 +87,9 @@
 	${MKDIR} ${PREFIX}/lib/crafty/cpf
 	${CHOWN} -R root:nogroup ${PREFIX}/lib/crafty
 	${CHMOD} 775 ${PREFIX}/lib/crafty ${PREFIX}/lib/crafty/cpf
+.if defined(WITH_BOOK)
 	${INSTALL_DATA} ${WRKSRC}/book.bin ${PREFIX}/lib/crafty/book.bin
+.endif
 	${INSTALL_DATA} ${WRKSRC}/books.bin ${PREFIX}/lib/crafty/books.bin
 	${INSTALL_DATA} ${WRKSRC}/crafty.hlp ${PREFIX}/lib/crafty/crafty.hlp
 	${CHOWN} root:nogroup ${PREFIX}/lib/crafty/book*
diff -Nur games.orig/crafty/pkg-plist games/crafty/pkg-plist
--- games.orig/crafty/pkg-plist	2009-03-22 13:37:58.000000000 +0000
+++ games/crafty/pkg-plist	2009-03-22 13:46:22.000000000 +0000
@@ -1,5 +1,5 @@
 bin/crafty
-lib/crafty/book.bin
+%%BOOK%%lib/crafty/book.bin
 lib/crafty/books.bin
 lib/crafty/crafty.hlp
 %%PORTDOCS%%share/doc/crafty/crafty.doc.ascii
diff -Nur games.orig/crafty-open-enormous/Makefile games/crafty-open-enormous/Makefile
--- games.orig/crafty-open-enormous/Makefile	2009-03-22 13:38:00.000000000 +0000
+++ games/crafty-open-enormous/Makefile	2009-03-22 13:46:50.000000000 +0000
@@ -13,7 +13,7 @@
 DISTFILES=	enormous.zip
 EXTRACT_ONLY=	${DISTFILES}
 
-MAINTAINER=	ports@FreeBSD.org
+MAINTAINER=	flo@kasimir.com
 COMMENT=	The enormous opening book (about 85-90 MByte) for crafty
 
 BUILD_DEPENDS=	crafty:${PORTSDIR}/games/crafty
@@ -23,7 +23,7 @@
 USE_ZIP=		yes
 NO_WRKSUBDIR=		yes
 NO_PACKAGE=		Package is way too big
-CONFLICTS=		crafty-open-large-* crafty-open-medium-*
+CONFLICTS=		crafty-open-large-* crafty-open-medium-* crafty-open-default-*
 
 .include <bsd.port.pre.mk>
 
diff -Nur games.orig/crafty-open-large/Makefile games/crafty-open-large/Makefile
--- games.orig/crafty-open-large/Makefile	2009-03-22 13:37:58.000000000 +0000
+++ games/crafty-open-large/Makefile	2009-03-22 13:47:00.000000000 +0000
@@ -13,7 +13,7 @@
 MASTER_SITE_SUBDIR=	dd/crafty
 DISTFILES=	large1.zip large2.zip large3.zip large4.zip
 
-MAINTAINER=	ports@FreeBSD.org
+MAINTAINER=	flo@kasimir.com
 COMMENT=	The large opening book for crafty
 
 BUILD_DEPENDS=	crafty:${PORTSDIR}/games/crafty
@@ -22,7 +22,7 @@
 DIST_SUBDIR=	crafty
 USE_ZIP=	yes
 NO_WRKSUBDIR=	yes
-CONFLICTS=	crafty-open-enormous-* crafty-open-medium-*
+CONFLICTS=	crafty-open-enormous-* crafty-open-medium-* crafty-open-default-*
 
 post-extract:
 	@${ECHO_MSG} '================================================================'
diff -Nur games.orig/crafty-open-medium/Makefile games/crafty-open-medium/Makefile
--- games.orig/crafty-open-medium/Makefile	2009-03-22 13:38:02.000000000 +0000
+++ games/crafty-open-medium/Makefile	2009-03-22 13:47:10.000000000 +0000
@@ -13,7 +13,7 @@
 MASTER_SITE_SUBDIR=	dd/crafty
 DISTNAME=	medium
 
-MAINTAINER=	ports@FreeBSD.org
+MAINTAINER=	flo@kasimir.com
 COMMENT=	The medium opening book (about 1.9 MByte) for crafty
 
 BUILD_DEPENDS=	crafty:${PORTSDIR}/games/crafty
@@ -22,7 +22,7 @@
 DIST_SUBDIR=	crafty
 USE_ZIP=	yes
 NO_WRKSUBDIR=	yes
-CONFLICTS=	crafty-open-enormous-* crafty-open-large-*
+CONFLICTS=	crafty-open-enormous-* crafty-open-large-* crafty-open-default-*
 
 do-build:
 	@${ECHO_MSG} '================================================================'