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Subject: Re: Test Move for Portables

Author: Roy Eassa

Date: 08:04:01 04/11/02

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On April 10, 2002 at 16:56:49, Art Basham wrote:

>White plays Rxf7...!
>
>[D]5rk1/1p3ppp/1p6/p1q1PR2/2B1b3/1PP5/6PP/3Q3K w - -
>
>Novag Amber takes 60 sec. (7 ply)...
>
>Novag Scorpio ....40 sec.
>
>Fidelity Mach3 takes 5 min. 32 sec.
>
>Travel Champion ...4 min. 30 sec.


IMO this is a very good puzzle for slower machines, in part because any other
move leaves White worse off and in part because it's solvable by most in a
moderate length of time (not too easy, not too hard).  Also because the various
devices display a relatively wide range of solution times (Chess Tiger on a
current overclocked Palm should take under 30 seconds).

Chess Genius on a 41 MHz Palm takes 1:40 to prefer Rxf7 (with a small Black
advantage), 3:50 to see a small White advantage, and a lot longer (I gave up
after 6 minutes) to see that it gives White a big advantage.

I just tested Chess Genius on an iPAQ and it solved it in about 1 second, maybe
less.  I can't wait until Palm switches CPUs!



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