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Subject: Re: Zappa 1.1

Author: Ed Schröder

Date: 03:26:30 09/15/05

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On September 15, 2005 at 04:30:38, Mark Young wrote:

>On September 14, 2005 at 17:05:59, Ernst Walet wrote:
>
>>Because Zappa 1.1 is SMP and 64 bit, I gave it a try and was pleasant suprised.
>>One of my favourite chess positions is this one, where Kasparov played Rxd4.
>>How do other engines do? If your engine finds it please give it a couple of more
>>plies to see if it holds it.
>
>The better test for the engine in this position, is to see when the program see
>that Rxd4 is not winning. Since Rxd4 is only a draw with best play.
>This is why many programs will not play Rxd4, or drop the move with a longer
>search.

1. Rxd4 cxd4 2. Re7+ Kb6 3. Qxd4+ Kxa5 4. b4+ Ka4 5. Ra7 Bb7 6. Rxb7 Qxd5 7. Rb6
1-0

But you need to give engines moves in advance.

Ed



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