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In article <DuC8o6.67y@on.bell.ca>, douvilld@on.bell.ca (Derek Douville) writes:
>Can I use xboard to play against another human on the network?  I'm running
>HP/UX 10.10,  gnuchess and xboard compiled under hp 9.  What do I have to do
>to get this working?
>
>Please reply to newsgroup.  Thanks.

This is a FAQ.

[D.8] Can I use XBoard to play a game of chess with another human?

The only way for two humans on different machines to play chess in real
time using XBoard is to use an Internet Chess Server as an intermediary.
That is, each player runs his own copy of XBoard, both of them log into
an ICS, and they play a game there. Two copies of XBoard cannot
communicate with each other directly.

Instructions on how to get started with Internet chess are included with
the XBoard distribution. The network addresses included in the XBoard
distribution may not always be current. The oldest ICS is the Internet
Chess Club at chess.lm.com, which now has a fee for registered use, but
still allows free unregistered use. There are also many newer sites with
no fees, using the Free Internet Chess Server implementation (FICS).
Current FICS sites include ics.onenet.net (the most active),
eics.daimi.aau.dk, dics.dds.nl, holly.csv.warwick.ac.uk, and
chess.unix-ag.uni-kl.de. On all these machines, the port number to use
is 5000. Try "finger chess@ics.onenet.net" for more address information.

Note: If you don't have network connectivity to any ICS site, you can
run your own server using the FICS code. You can get a copy by anonymous
ftp from the Internet Chess Library (topic [A.3] ). The code is changing
rapidly, so send mail to chess@ics.onenet.net and/or log into the FICS
server at ics.onenet.net and ask the administrators there for current
information.

The cmail program included with XBoard lets you play email postal games
with another human; see topic [D.6] .

Two humans can play chess on the same machine using one copy of XBoard
in Edit Game mode, but the clocks don't run in this mode, so it's of
limited usefulness.