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Subject: Re: BT2630 questions

Author: Will Singleton

Date: 14:25:43 04/13/00

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On April 13, 2000 at 10:31:56, Jon Dart wrote:

>I've been looking at the BT2630 test suite, which I run routinely.
>
>One of the positions is #26:
>
>2r3k1/pbr1q2p/1p2pnp1/3p4/3P1P2/1P1BR3/PB1Q2PP/5RK1 w - - bm f5; id "test 26";
>
>Is f5 really a decisive move here? Currently my program likes g3
>after searching nearly 200 million nodes. At earlier plies it
>selected Re5. They all look pretty reasonable to me. f5 looks
>good : but is it positionally better, or does White get material
>or a decisive attack?
>

Amateur starts with f5, but drops from a high of about +1 at ply 8 to +0.19 by
ply 12.  I would guess that f5 might not be that much better than the others,
but what do the commercials say?


>Another one that I'm not passing at present is #13:
>
>2bq3k/2p4p/p2p4/7P/1nBPPQP1/r1p5/8/1K1R2R1 b - - bm Be6; id "test 13";
>
>I used to get Be6, but now on a faster machine it eventually
>switches back to c2+ at ply 12 and holds it.
>
>--Jon

Mine starts with c2 and stays there, though the score steadily drops, ending at
+2.

Will






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