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XBoard -- an Xt/Athena user interface for GNU Chess
Original authors: Dan Sears and Chris Sears
Enhancements (Version 2.0): Tim Mann
XBoard borrows its colors, icon and piece bitmaps from XChess
which was written and is copyrighted by Wayne Christopher.
Copyright 1991 by Digital Equipment Corporation, Maynard, Massachusetts.
Enhancements Copyright 1992 Free Software Foundation, Inc.
The following terms apply to Digital Equipment Corporation's copyright
interest in XBoard:
------------------------------------------------------------------------
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
------------------------------------------------------------------------
The following terms apply to the enhanced version of XBoard distributed
by the Free Software Foundation:
------------------------------------------------------------------------
This file is part of XBOARD.
XBOARD is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY. No author or distributor accepts responsibility to anyone for
the consequences of using it or for whether it serves any particular
purpose or works at all, unless he says so in writing. Refer to the XBOARD
General Public License for full details.
Everyone is granted permission to copy, modify and redistribute XBOARD, but
only under the conditions described in the XBOARD General Public License. A
copy of this license is supposed to have been given to you along with
XBOARD so you can know your rights and responsibilities. It should be in a
file named COPYING. Among other things, the copyright notice and this
notice must be preserved on all copies.
------------------------------------------------------------------------
XBoard is an X11/Xt/Athena Widgets chessboard that can serve as a user
interface for GNU Chess or for the Internet Chess Server, or can be
used to play out games manually or from game files. See the manual
page xboard.man for further details.
XBoard was originally written by Dan Sears and Chris Sears. XBoard
borrows its colors, icons and piece bitmaps from XChess, which was
written and copyrighted by Wayne Christopher. We thank him for his
work on XChess. Tim Mann <mann@src.dec.com> is responsible for XBoard
versions 2.0 and following.
Report bugs in XBoard or GNU Chess to <bug-gnu-chess@prep.ai.mit.edu>.
If you improve XBoard, please send a message about your changes to
bug-gnu-chess, and Tim will get in touch with you about merging them
in to the main line of development.
CAVEATS
XBoard depends on the Xt Intrinsics and Athena Widget Set of X11R4 or
later. In particular, X11R3 just won't do. At this writing, the
standard DEC Ultrix and SUN releases won't do either. The Athena
widgets are either missing in the DEC standard distribution or in the
wrong (R3) place in SUN OpenWindows.
XBoard works best with version 4.0 of GNU Chess. Older versions may
also work, but they are unsupported. The GNU Chess project requests
that you get a current copy of GNU Chess rather than using older,
bug-ridden versions. GNU Chess must be compiled with the -DXBOARD
flag for use with XBoard. Use the "make gnuchessx" target in GNU
Chess 4.0 to do this.
The Free Software Foundation would prefer to be able to distribute an
X chessboard program covered only by the GNU General Public License
and unencumbered by any other copyright. If you can help with this,
please contact the FSF.