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Subject: Re: A new Rebel contest?

Author: James B. Shearer

Date: 23:05:10 11/23/97

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     I would suggest the following contest.  Select a set of initial
positions.  Associate with each initial position rebel settings so
that rebel will play deterministically.  The object of the contest
is to find the fastest win (mate) against rebel from each position.
Prizes could be given for the best result for each position and/or
the best results for the entire set.  Ties would be broken by date
received.
     I would suggest choosing rebel settings such that rebel will
play reasonably quickly on average hardware so that contestants on
slower machines have a chance.  This also makes competing more
entertaining.  Difficulty could be increased by choosing initial
positions where rebel is ahead.
     Of course some of the winning entries might be embarrassing.
On the other hand they might help identify fixable problems in the
program.
     A variation would be to ask for quickest mates from the point
rebel leaves book.  Again the results might help make the program
stronger.
                    James B. Shearer
PS:  I tried this some time ago (for my own amusement) against the
chess program included in os/2 (which is not very good) searching
for the quickest wins for white after each of the 20 possible
opening moves and also the quickest win as black.  My best results
were  mates in 11-15 moves.  Many were similar so more variation
in the initial positions might be desirable.
     I have not tried this against rebel.



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