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 » Wed Nov 08, 2017 8:02 pm

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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My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

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Graham Banks
Posts: 31348
Joined: Sun Feb 26, 2006 9:52 am
Location: Auckland, NZ

Broadcast Details

Post by Graham Banks » Wed Nov 08, 2017 8:04 pm

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
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

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Graham Banks
Posts: 31348
Joined: Sun Feb 26, 2006 9:52 am
Location: Auckland, NZ

Round 1 Matches

Post by Graham Banks » Wed Nov 08, 2017 8:05 pm

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
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

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lucasart
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Re: November Knockout

Post by lucasart » Thu Nov 09, 2017 4:00 am

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 » Thu Nov 09, 2017 4:51 am

lucasart wrote:Is that 4 CPU ?
Only 1CPU.
Demolito is on the 4CPU waiting list.
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

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Graham Banks
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Location: Auckland, NZ

Re: Round 1 Matches

Post by Graham Banks » Thu Nov 09, 2017 9:09 pm

(8.0-4.0) Crafty 25.2 64-bit v Quazar 0.4 64-bit
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

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Graham Banks
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Re: Round 1 Matches

Post by Graham Banks » Fri Nov 10, 2017 8:23 pm

(5.5-6.5) Demolito 2017-08026 64-bit v Rodent III 0.210 64-bit
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

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Graham Banks
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Location: Auckland, NZ

Re: Round 1 Matches

Post by Graham Banks » Fri Nov 10, 2017 8:24 pm

(5.5-6.5) Deep Junior 13.3 64-bit v Spark 1.0 64-bit
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

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Graham Banks
Posts: 31348
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Location: Auckland, NZ

Re: Round 1 Matches

Post by Graham Banks » Sat Nov 11, 2017 6:44 am

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

Post by lucasart » Sat Nov 11, 2017 8:36 am

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.

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