New engine releases 2020

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Modern Times
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Re: New engine releases 2020

Post by Modern Times » Sun Mar 15, 2020 7:01 pm

CMCanavessi wrote:
Sun Mar 15, 2020 6:24 pm
Did something happen between Devel 3.0.0a and 3.0.0b ? There's a difference of 100 elo in CCRL between the 2, with 3.0.0a being stronger. How can that be the case? 3.0.0b is even weaker than Devel 2. Weird.
We're removing those 3.0.0b games pending further investigation.
.

Opinions expressed here are my own, and not necessarily those of the CCRL Group.

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CMCanavessi
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Location: Argentina

Re: New engine releases 2020

Post by CMCanavessi » Mon Mar 16, 2020 12:41 am

Modern Times wrote:
Sun Mar 15, 2020 7:01 pm
CMCanavessi wrote:
Sun Mar 15, 2020 6:24 pm
Did something happen between Devel 3.0.0a and 3.0.0b ? There's a difference of 100 elo in CCRL between the 2, with 3.0.0a being stronger. How can that be the case? 3.0.0b is even weaker than Devel 2. Weird.
We're removing those 3.0.0b games pending further investigation.
Maybe the change of compiler that was talked about some days ago is the culprit... hope the reason can be found soon.
Follow my tournament and some Leela gauntlets live at http://twitch.tv/ccls

supersharp77
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Location: Southwest USA

Re: New engine releases 2020

Post by supersharp77 » Mon Mar 16, 2020 8:24 am

CMCanavessi wrote:
Mon Mar 16, 2020 12:41 am
Modern Times wrote:
Sun Mar 15, 2020 7:01 pm
CMCanavessi wrote:
Sun Mar 15, 2020 6:24 pm
Did something happen between Devel 3.0.0a and 3.0.0b ? There's a difference of 100 elo in CCRL between the 2, with 3.0.0a being stronger. How can that be the case? 3.0.0b is even weaker than Devel 2. Weird.
We're removing those 3.0.0b games pending further investigation.
Maybe the change of compiler that was talked about some days ago is the culprit... hope the reason can be found soon.
Need A link for Devel 3.0.0a.......author only has version 3.0.0b currently on his site....Thx AR :) :wink:

Gabor Szots
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Full name: Gabor Szots

Re: New engine releases 2020

Post by Gabor Szots » Mon Mar 16, 2020 8:43 am

supersharp77 wrote:
Mon Mar 16, 2020 8:24 am
Need A link for Devel 3.0.0a.......author only has version 3.0.0b currently on his site....Thx AR :) :wink:
Removed because of false virus alerts. I have since updated my Win10 and the alarm has gone. If you want it send me an e-mail (address in my profile) and I'll send it to you.
Gabor Szots
CCRL testing group

Gabor Szots
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Full name: Gabor Szots

Re: New engine releases 2020

Post by Gabor Szots » Mon Mar 16, 2020 8:55 pm

supersharp77 wrote:
Mon Mar 16, 2020 8:24 am
Need A link for Devel 3.0.0a.......author only has version 3.0.0b currently on his site....Thx AR :) :wink:
Try this link. I could not send an e-mail to you.

http://kirill-kryukov.com/chess/discuss ... =7&t=11912
Gabor Szots
CCRL testing group

voffka
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Full name: Volodymyr Shcherbyna
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Re: New engine releases 2020

Post by voffka » Sun Mar 22, 2020 2:11 am

Image

Igel 2.4.0 at https://github.com/vshcherbyna/igel/releases/tag/2.4.0 (binaries for Raspberry Pi, Linux, macOS and Windows).

What's new:

- Implement singlular extensions
- Detect drop of score and using time more aggressively
- Remove IID and simplify search
- Do not tt cutoff on pv moves
- Simplification for nullmove pruning
- Simplification for connected pawn evalution
- Basic endgame knowledge to detect draw in eval/search
- Retune everything + decrease number of tunnable parameters from 2600 to 1500
- Apply LMR when at least one legal move has been played
- Decrease reductions in LMR for pv moves

Relative strength compared to previous versions of Igel in 60s+0.6s time control:

Code: Select all

os=linux
hash=256
tc=all/60+0.6
Score of Igel 2.4.0 64 POPCNT vs Igel 2.3.1 64 POPCNT: 266 - 170 - 564 [0.548] 1000
Elo difference: 33.46 +/- 14.19
Relative strength compared to Winter 0.7 BMI2 in CCRL 40/4 time control:

Code: Select all

os=windows
hash=256
tc=40/102
Score of Igel 2.4.0 64 POPCNT vs Winter 0.7 BMI2: 7 - 0 - 3  [0.850] 10
Relative strength compared to RubiChess 1.6 in CCRL 40/4 time control:

Code: Select all

os=windows
hash=256
tc=40/102
Score of Igel 2.4.0 64 POPCNT vs RubiChess 1.6: 5 - 2 - 4  [0.636] 11

Gabor Szots
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Full name: Gabor Szots

Re: New engine releases 2020

Post by Gabor Szots » Sun Mar 22, 2020 7:25 am

Thanks Voffka. Good to see you have so many ideas.
Gabor Szots
CCRL testing group

Jamal Bubker
Posts: 290
Joined: Mon May 24, 2010 2:32 pm

Re: New engine releases 2020

Post by Jamal Bubker » Sun Mar 22, 2020 12:21 pm

Thank you Volodymyr !

voffka
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Full name: Volodymyr Shcherbyna
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Re: New engine releases 2020

Post by voffka » Sun Mar 22, 2020 2:27 pm

You are always welcome!

P.S. I am out of ideas lately :) It is harder and harder to get elo these days ;)

Norbert Raimund Leisner
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Re: New engine releases 2020

Post by Norbert Raimund Leisner » Tue Mar 24, 2020 12:32 pm


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