Author: Dann Corbit
Date: 14:56:58 08/16/01
Go up one level in this thread
On August 16, 2001 at 17:51:05, Roy Eassa wrote:
>On August 16, 2001 at 15:50:28, Dann Corbit wrote:
>
>>On August 16, 2001 at 15:42:51, Frank Phillips wrote:
>>
>>>Mine takes forever and 12 ply to see the trouble, even if I turn up the open
>>>h-file with rook (queen) on it king safety term.
>>>
>>>Do the programs that solve this quickly do it by shear speed, evaluation or
>>>clever extensions?
>>
>>Phalanx solves it very fast.
>>Phalanx searches less than 150K NPS on my 950 MHz machine.
>>It has very clever search extensions.
>>It has very clever king saftety.
>>
>>So darn clever (in fact) I have a hard time figuring out what is going on,
>>despite having the source code at my disposal.
>
>
>Phalanx, eh? How has it done in tournaments vs. the other engines? If not so
>good, what weakness(es) does it have to offset these strengths?
It finished about the center of the pile in "The Battle of the Crowns" chess
tournament in the 4 crown division. (This was over a year ago, and many of the
program versions are now outdated).
Program Score % Av.Op. Elo + - Draws
1 LGoliath : 37.0/ 52 71.2 2289 2445 76 99 26.9 %
2 Crafty : 32.0/ 52 61.5 2294 2376 85 77 34.6 %
3 AnMon : 31.5/ 52 60.6 2294 2369 86 83 28.8 %
4 Amy : 28.5/ 52 54.8 2297 2331 93 85 21.2 %
5 SOS : 28.0/ 52 53.8 2298 2325 94 82 23.1 %
6 Bringer : 27.5/ 52 52.9 2298 2318 96 72 32.7 %
7 TCBishop : 27.0/ 52 51.9 2299 2312 97 73 30.8 %
8 Phalanx : 26.5/ 52 51.0 2299 2306 99 74 28.8 %
9 Comet : 24.5/ 52 47.1 2301 2281 62 96 44.2 %
10 Gromit3 : 24.5/ 52 47.1 2301 2281 79 96 25.0 %
11 Gromit2 : 21.5/ 52 41.3 2304 2243 89 88 21.2 %
12 Francesca : 18.5/ 52 35.6 2307 2204 102 82 17.3 %
13 Yace : 18.5/ 52 35.6 2307 2204 87 82 28.8 %
14 ZChess : 18.5/ 52 35.6 2307 2204 108 82 13.5 %
The engine is 150K NPS on a very fast machine. Other engines are much faster
and get one or two full plies deeper at every turn.
Attach a really fast motor, and Phalanx might rule the world.
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