November Knockout

Discussion of computer chess matches and engine tournaments.

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Graham Banks
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Location: Auckland, NZ

November Knockout

Post by Graham Banks »

NOVEMBER KNOCKOUT

Intel i5 Quad
ChessGUI
256mb hash each where possible
3-4-5 piece tablebases
Ponder off
GBSelect2017-2.cgb book
40 moves in 25 minutes repeating (adapted for the CCRL)
12 game knockout matches


Participants

Crafty 25.2 64-bit
Rodent III 0.210 64-bit
Deep Junior 13.3 64-bit
Wasp 2.01 64-bit
Cheng 4.39 64-bit
Spike 1.4 Leiden
Bobcat 8.0 64-bit
Amoeba 2.6 64-bit
Quazar 0.4 64-bit
Demolito 2017-08-26 64-bit'
Spark 1.0 64-bit
Deuterium 14.3.34.130 64-bit
EXchess 7.97b 64-bit
Thinker 5.4d Inert 64-bit
Gaviota 1.0 64-bit
Dirty 30Apr2017 64-bit

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gbanksnz at gmail.com
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Graham Banks
Posts: 41415
Joined: Sun Feb 26, 2006 10:52 am
Location: Auckland, NZ

Broadcast Details

Post by Graham Banks »

Progress on matches and pgn downloads will be available from here::
http://kirill-kryukov.com/chess/discuss ... f=7&t=9441

Alternatively, if you install TLCV (Tom's Live Chess Viewer) on your computer, you can watch the games live move by move. You'll also be able to chat to others following the tournament in the chatroom there.
http://home.pacific.net.au/~tommyinoz/client.zip
Host - GrahamCCRL.dyndns.org Port - 16002
gbanksnz at gmail.com
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Graham Banks
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Round 1 Matches

Post by Graham Banks »

ROUND 1 MATCHES

Crafty 25.2 64-bit v Quazar 0.4 64-bit
Demolito 2017-08026 64-bit v Rodent III 0.210 64-bit
Deep Junior 13.3 64-bit v Spark 1.0 64-bit
Deuterium 14.3.34.130 64-bit v Wasp 2.01 64-bit
Cheng 4.39 64-bit v EXchess 7.97b 64-bit
Thinker 5.4d Inert 64-bit v Spike 1.4 Leiden
Bobcat 8.0 64-bit v Gaviota 1.0 64-bit
Dirty 30Apr2017 64-bit v Amoeba 2.6 64-bit
gbanksnz at gmail.com
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lucasart
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Re: November Knockout

Post by lucasart »

Graham Banks wrote: Intel i5 Quad
ChessGUI
256mb hash each where possible
3-4-5 piece tablebases
Ponder off
GBSelect2017-2.cgb book
40 moves in 25 minutes repeating (adapted for the CCRL)
12 game knockout matches
Is that 4 CPU ?
Theory and practice sometimes clash. And when that happens, theory loses. Every single time.
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Graham Banks
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Location: Auckland, NZ

Re: November Knockout

Post by Graham Banks »

lucasart wrote:Is that 4 CPU ?
Only 1CPU.
Demolito is on the 4CPU waiting list.
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Graham Banks
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Re: Round 1 Matches

Post by Graham Banks »

(8.0-4.0) Crafty 25.2 64-bit v Quazar 0.4 64-bit
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Graham Banks
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Re: Round 1 Matches

Post by Graham Banks »

(5.5-6.5) Demolito 2017-08026 64-bit v Rodent III 0.210 64-bit
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Graham Banks
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Re: Round 1 Matches

Post by Graham Banks »

(5.5-6.5) Deep Junior 13.3 64-bit v Spark 1.0 64-bit
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Graham Banks
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Re: Round 1 Matches

Post by Graham Banks »

(6.0-6.0) Dirty 30Apr2017 64-bit v Amoeba 2.6 64-bit (GUI decides which engine goes through)
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lucasart
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Re: November Knockout

Post by lucasart »

Graham Banks wrote: 256mb hash each where possible
40 moves in 25 minutes repeating (adapted for the CCRL)
I think I finally understand why Demolito underperforms dramatically in CCRL 40/40 compared to 40/4. It's probably not a problem of search or eval scalability, but simply of hash pressure. Having the most basic hash replacement scheme is very bad in CCRL 40/40 condition, because the hash pressure there is enormous (ie. 256mb is very small for such a long time control). In turn magnifies the effect of hash replacement, disadvantaging Demolito (whose hash replacement sucks).

I've already improved my hash replacement, and it has shown significant gain at testing conditions that aim to reproduce the CCRL 40/40 hash pressure. Hopefully the next version won't get beaten by Rodent anymore...
Theory and practice sometimes clash. And when that happens, theory loses. Every single time.