Author: Albert Silver
Date: 04:33:51 12/29/04
Go up one level in this thread
On December 28, 2004 at 20:44:54, Derek Paquette wrote:
>On December 28, 2004 at 20:29:03, Uri Blass wrote:
>
>>On December 28, 2004 at 17:46:15, Derek Paquette wrote:
>>
>>>On December 28, 2004 at 17:26:23, Kurt Utzinger wrote:
>>>
>>>>On December 28, 2004 at 17:07:54, Derek Paquette wrote:
>>>>
>>>>>On December 28, 2004 at 15:26:16, Kurt Utzinger wrote:
>>>>>
>>>>>>Matches at 40’/40 + 40’/40 +40’ time control
>>>>>>Junior9-GUI, ponder=off, 3-/4-men EGTB
>>>>>>own books, no book learning, no learning
>>>>>>on 4 Athlons 1.3/64 MB hash for all engines
>>>>>>First defeat of Junior9 vs Shredder8 in this test.
>>>>>>http://www.utzingerk.com/jun9_test.htm
>>>>>>Kurt
>>>>>
>>>>>Kurt, Junior 9 is known as an aggressive engine, how do you find Shredder 8
>>>>>handled this? Did it attack aswell or defend defend defend and then finally win
>>>>>in the endgame?
>>>>
>>>>
>>>> In my opinion there are different reasons why Shredder8
>>>> won this match: the German program is very good at defence
>>>> - stronger than Junior9 - knows more about pawn structures
>>>> and plays the endgame better than Junior9 ... and some pawns
>>>> given away by Junior9 did not bring the expected result -:)
>>>> Maybe the difference between these two very strong engines
>>>> will become smaller at longer time controls.
>>>> Kurt
>>>
>>>Kurt, did you happen to notice which program was searching deeper?
>>>
>>>Junior was 'known' as being the deepest searcher, but shredder 8 changed all
>>>that, which searches deeper.
>>
>>Junior was never known to be the deeper searcher.
>>
>>It was always known that depth in Junior has a different meaning.
>>depth in shredder8 also has different meaning relative to depth in shredder7.04
>>because (otherwise Shredder8 could be at least 100 elo stronger than
>>Shredder7.04 based on the difference on their search depth).
>>
>>Uri
>
>
>I realize that Shredder 8 is pruning A LOT more than shredder 7.04, but knowing
>that, the question would be,
>
>who is pruning the most to get the furthest ahead?
Getting the furthest ahead or deepest is pointless if you fail to see the better
move. Hiarcs with its 'apparently' shallower depth has shown how meaningless ply
depth is more than any top engine IMO.
When playing with the Pro Deo settings, there are several ways to get it to go a
lot deeper in an equal time, but it often plays much worse, not a little.
Albert
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.