Author: William Bryant
Date: 19:18:34 05/26/99
Go up one level in this thread
On May 26, 1999 at 15:32:13, Francis Monkman wrote:
>Here's an interesting trap Suba set an opponent at Las Palmas, 1979:
>
>rq2r1k1/5pbp/4pnp1/2NbN2n/1p3P2/1P4PP/PB3QBK/2RR4 w - -
>
>If White plays g4?, as he did in the game, he loses immediately to Nxf4!
>Qxf4 Rxa2 and White played Rc2, but there's no defense.
>
>The only program that appeared not even to consider g4 was Genius 4,
>Genii 3 & 6 (under Genius 6 GUI) took about 8 seconds to prefer Bd4
>(which according to Suba is correct).
>
The latest version of Screamer never considers anything but Bd4 after ply 5.
The program is still in its early stages (about 2250 based on LCT II).
Analysis below.
William
wbryant@ix.netcom.com
-----
Welcome to Screamer (Beta) 1.00 Build 25
Current Hash Table Size: 8192 K bytes
Compiled in <<Faster Mode>>
PVS Search
NULL move Search
New Game ...
Move 1 W>>
The Current Search Time: 900 seconds
New Board Position
rq2r1k1/5pbp/4pnp1/2NbN2n/1p3P2/1P4PP/PB3QBK/2RR4 w - -
Move 1 W>>
PLY NODES TIME SCORE PV
____________________________________________
5 108235 0:03 +0.09 Bxd5 exd5 g4 Nxf4 Qxf4
5 413834 0:11 +0.27 Bd4 Bxg2 Qxg2 Qa7 Rd2
6 1020837 0:27 +0.49 Bd4 Ra3 Bxd5 exd5 g4 Nxf4 Qxf4 Nxg4+ hxg4 Bxe5
Bxe5 Qxe5
7 3231223 1:26 +0.50 Bd4 Qb5 Bxd5 Nxd5 Kg1 Red8 Ne4 Bxe5 Bxe5
8 9333349 4:10 +0.50 Bd4 Bxg2 Kxg2 Nd5 Ncd7 Qd6 Kg1 Red8
8 33442888 15:00 +0.50 Bd4 Bxg2 Kxg2 Nd5 Ncd7 Qd6 Kg1 Red8
Total Search Time: 15:00
Move: Bd4
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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