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Subject: Re: The opening book is extreamly important for a chess engine.....Jorge....

Author: martin fierz

Date: 01:19:43 09/24/04

Go up one level in this thread


On September 23, 2004 at 04:34:50, Drexel,Michael wrote:

>
>Many of your top programs are not even able to find the only move that makes
>sense in the follwing position on their own at tournament time control on a
>single processor:
>
>[D] rnbqkb1r/pppp1ppp/5n2/4N3/4P3/8/PPPP1PPP/RNBQKB1R b KQkq - 0 3
>
>3...d6 is the _only_ move.
>
>I assume you can figure out yourself why Qe7,Sc6,d5 or Nxe4 are worse.
>
>Michael

a nice example! thanks for posting it. now i understand better what you mean :-)

cheers
  martin

PS: muse 0898 on P4 2.4GHz also has no clue and oscillates between Qe7 and d6, i
doubt that it would settle for d6 for good if left to think longer.

Muse 0.898  UCI1 113 MB:
 1   00:00 -0.05   Nf6xe4
 2+  00:00 -0.27   Qd8e7
 2   00:00 -0.27   Qd8e7 d2d4
 3+  00:00 -0.09   Nf6xe4
 3+  00:00  0.18   d7d6
 3   00:00  0.18   d7d6 Ne5f3 Nf6xe4
 4   00:00  0.09   d7d6 Ne5f3 Nf6xe4 d2d4
 5   00:00 -0.05   d7d6 Ne5f3 Nf6xe4 d2d3 Ne4c5
 6+  00:00 -0.03   Qd8e7
 6   00:00 -0.03   Qd8e7 Ne5f3 Qe7xe4+ Bf1e2 Bf8b4 Nb1c3 Qe4e7
 7+  00:00 -0.19   d7d6
 7   00:01 -0.19   d7d6 Ne5f3 Nf6xe4 Bf1d3 Ne4c5 Qd1e2+ Bf8e7 00
 8+  00:02 -0.05   Qd8e7
 8   00:03 -0.05   Qd8e7 Ne5f3 Qe7xe4+ Bf1e2 Bf8e7 00 00 d2d4 d7d5
 9   00:17 -0.38   Qd8e7 Ne5f3 Qe7xe4+ Bf1e2 Bf8d6 00 00 d2d4 Qe4g6 Be2d3
10   00:25 -0.08   Qd8e7 Ne5f3 Qe7xe4+ Bf1e2 Bf8e7 00 00 d2d4 d7d5 Nb1c3 Qe4g4
11+  00:50 -0.12   d7d6
11   01:01 -0.12   d7d6 Ne5f3 Nf6xe4 Bf1d3 Ne4f6 00 Bf8e7 Bd3b5+ c7c6 Bb5c4 00
d2d4
12+  01:39 -0.15   Qd8e7
12   02:23 -0.15   Qd8e7 d2d4 d7d6 Ne5c4 Qe7xe4+ Nc4e3 d6d5 Nb1c3 Bf8b4 Bf1d3
Qe4h4 Bd3b5+
13+  04:53 -0.12   d7d6
13   07:46 -0.12   d7d6 Ne5f3




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