Author: GeoffW
Date: 17:02:13 03/06/04
Go up one level in this thread
Hi Dan
Thanks for the extensive analysis, that was a lot of output so I summarised the
times to avoid the obvious Bishop takes rook
Amy-net-087............00:16
Aristarch 4.41.........00:02
DeepSjeng..............00:04
Delfi-440..............00:13
Dragon_45..............01:23
ELChinito 3.25.........00:06
Glc300.................00:05
Gothmog................01:31
Kke-253................00:08
Ktulu..................00:23
List512................00:04
Patzer 3.61.......... >00:35 not resolved
Quark-232-net..........00:53
Ruffian_202............00:03
Ruffian_210........... 00:04
Smarthink-017a.........00:10
Yace...................01:06
Shredder 7.04..........00:03
This is seemingly a good test position to separate the elite programs from the
merely good ones, the real top programs can see and resolve this threat in less
than 5 seconds.
I have only got to improve my program by a factor of 300 to get there, Arrrrrgh
!
It looks as though my program is the only one that really suffers from a nodes
explosion though.
I will do some experimenting on this tomorrow, maybe put some output in to try
and see what extensions are adding lots of nodes. I will try a few tests with
different features switched off to see if that makes a difference too ?
>Interesting position. I would like to be white here, for sure. Great space
>advantage and extremely dangerous king attack possibilities.
>
>Most top engines seem to go through similar ideas about the position as yours
>does.
>
>What sort of hardware were you using?
P4 1.6 Ghz running at 2.4 Ghz 512 Meg Ram (64Meg Hash table)
Yes, chess programs do make it get a tad overheated !!
>
>What sort of techniques are used in your chess engine?
>
judging from this test position, not eough of the correct or intelligent
techniques I would say :-)
Joking apart, my program is TSCP + some code optimisations + 0x88 board + Null
Moves + Hash table + killer moves + some rudimentary extensions and pruning
Pretty standard stuff, it is quite surprising how much stronger TSCP can be made
just from the above additions but with almost the same evaluation function.
Regards Geoff
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