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Article #6154

GNUCHESS

#6154
From: Peter Stein
Date: Mon, 09 Jul 1990 22:25
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My apologies to the net for my "easy mode" posting. I have since
recovered the pertinent documentation.

Some new observations:
  1. "book" is not enabled on successive games unless the program is
     exited and started up again. I tried various combinations of
     commands to no avail. What always happens is:
		  1. e2e4  g8f6
		  2. e4e5  f6e4 ??? and loses the knight in a few after
				    3. d2d4.
  2. Yes, I've seen the comments regarding pawn promotion, but I can't
     even promote to a Queen!!
  3. I've tried using "edit" to handle the pawn promotions, but it seems
     there is no way to delete individual pieces. Do I have to use "#"
     to delete the entire board and then enter all the pieces??
  4. So far I've conducted two games between CM 2100 and GNUCHESS. At
     30 seconds a move GNUCHESS won rather handily, CM dropping a piece
     after 17 moves. At 1 minute a move the game fizzled into a dead
     drawn position in 52 moves. Both claimed a draw by repetition!
     This game started as a sharp double king pawn opening with both 
     programs offering their queen pawn for initiative. Suddenly the 
     game degenerated into "brownian motion" as both programs became 
     eager to eliminate material and shuffle their pieces back and 
     forth. The resulting equal material ending should have been a draw
     with best play, but as it was conducted was in fact a win from 
     either side on several occassions!!
	My assessment so far: a. CM has superior opening book
			      b. GNUCHESS seems stronger in the middle
				 game
                              c. both are equally weak in the ending
     NOTE: I've yet to try them at higher levels. I know from experience
     that CM isn't half bad at the higher levels.

			 Your 2200 fish-at-large
Technical Details
Message-ID: <2971@tellab5.tellabs.com>
Path: arc1-ca.pugleaf.net!gmdzi!unido!mcsun!uunet!tellab5!stein

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Path: arc1-ca.pugleaf.net!gmdzi!unido!mcsun!uunet!tellab5!stein
From: stein@tellabs.com (Peter Stein)
Newsgroups: gnu.chess
Subject: GNUCHESS
Keywords: opening book, pawn promotion, match vs. CM 2100
Message-ID: <2971@tellab5.tellabs.com>
Date: 9 Jul 90 22:25:55 GMT
Sender: news@Tellabs.COM
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Posted: Mon Jul  9 23:25:55 1990