Zevra 1.6.2 r536

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sovaz1997
Posts: 236
Joined: Sun Nov 13, 2016 9:37 am

Re: Tevra 1.6.2 r536

Post by sovaz1997 » Mon Mar 12, 2018 1:14 pm

New versions of Zevra (v1.8.4).
https://github.com/sovaz1997/Zevra/rele ... 1.8.4_r650
The elo gain is about 60 points in LTC. Changes in Multi-Cut and moves generator optimizations.


Code: Select all

tc=60+0.6 (LTC)
Hash=16
Score of Zevra v1.8.4 r650 vs Zevra v1.8.3 r636: 347 - 204 - 257  [0.588] 808
Elo difference: 62.14 +/- 19.94

---------------------------
tc=60+0.6 (LTC)
Hash=16

Score of  Zevra v1.8.4 r650 vs Zevra v1.8.1 r594 popcnt: 704 - 268 - 394  [0.660] 1366
Elo difference: 114.91 +/- 16.01

---------------------------

tc=10+0.1 (STC)
Hash=16

Score of Zevra  Zevra v1.8.4 r650 vs Zevra v1.8.1 r594 popcnt: 648 - 292 - 260  [0.648] 1200
Elo difference: 106.27 +/- 17.97

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Graham Banks
Posts: 34098
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Location: Auckland, NZ

Re: Tevra 1.6.2 r536

Post by Graham Banks » Mon Mar 12, 2018 8:04 pm

sovaz1997 wrote:New versions of Zevra (v1.8.4).
https://github.com/sovaz1997/Zevra/rele ... 1.8.4_r650
The elo gain is about 60 points in LTC. Changes in Multi-Cut and moves generator optimizations.
Nice improvement Oleg. :)
Division 8 starts later this week.
gbanksnz at gmail.com

sovaz1997
Posts: 236
Joined: Sun Nov 13, 2016 9:37 am

Re: Tevra 1.6.2 r536

Post by sovaz1997 » Mon Mar 12, 2018 8:11 pm

Thanks! :)

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CMCanavessi
Posts: 886
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Location: Argentina

Re: Tevra 1.6.2 r536

Post by CMCanavessi » Mon Mar 12, 2018 8:39 pm

Nice, you'll need every single bit of elo if Zebra wants to survive next season, there will be 16 2500+ new entrants :lol:
Follow my tournament and some Leela gauntlets live at http://twitch.tv/ccls

sovaz1997
Posts: 236
Joined: Sun Nov 13, 2016 9:37 am

Re: Tevra 1.6.2 r536

Post by sovaz1997 » Fri Apr 20, 2018 7:29 am

My lichess bot: https://lichess.org/@/zevra_chess
All time controlls, rated/unrated, standard variation.

sovaz1997
Posts: 236
Joined: Sun Nov 13, 2016 9:37 am

Re: Zevra 1.6.2 r536

Post by sovaz1997 » Sat Jun 23, 2018 9:46 am

New release of Zevra: Zevra v1.8.5. Improved recognition of three-fold repetition of the position, added estimates of mg-eg for pawns, minor changes in the search.
The gain is approximately 20-30 points in 60+0.6.

Code: Select all

tc=60m+0.6s
hash=64mb

Score of Zevra v1.8.5 r664 vs Zevra v1.8.4 r650: 638 - 521 - 459  [0.536] 1618
Elo difference: 25.17 +/- 14.34
Zevra 2 - my chess engine.
Binary, source and description here: https://github.com/sovaz1997/Zevra2

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Kotlov
Posts: 220
Joined: Fri Jul 10, 2015 7:23 pm
Location: Russia

Re: Zevra 1.6.2 r536

Post by Kotlov » Sat Jun 23, 2018 9:57 am

sovaz1997 wrote:
Sat Jun 23, 2018 9:46 am
New release of Zevra: Zevra v1.8.5. Improved recognition of three-fold repetition of the position, added estimates of mg-eg for pawns, minor changes in the search.
The gain is approximately 20-30 points in 60+0.6.

Code: Select all

tc=60m+0.6s
hash=64mb

Score of Zevra v1.8.5 r664 vs Zevra v1.8.4 r650: 638 - 521 - 459  [0.536] 1618
Elo difference: 25.17 +/- 14.34
Great!
Eugene Kotlov
Hedgehog 2.1 64-bit coming soon...

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Graham Banks
Posts: 34098
Joined: Sun Feb 26, 2006 9:52 am
Location: Auckland, NZ

Re: Zevra 1.6.2 r536

Post by Graham Banks » Sat Jun 23, 2018 8:57 pm

sovaz1997 wrote:
Sat Jun 23, 2018 9:46 am
New release of Zevra: Zevra v1.8.5. Improved recognition of three-fold repetition of the position, added estimates of mg-eg for pawns, minor changes in the search.
The gain is approximately 20-30 points in 60+0.6.

Code: Select all

tc=60m+0.6s
hash=64mb

Score of Zevra v1.8.5 r664 vs Zevra v1.8.4 r650: 638 - 521 - 459  [0.536] 1618
Elo difference: 25.17 +/- 14.34
Thanks. :)
gbanksnz at gmail.com

sovaz1997
Posts: 236
Joined: Sun Nov 13, 2016 9:37 am

Re: Zevra 1.6.2 r536

Post by sovaz1997 » Sat Sep 01, 2018 6:23 pm

New version of Zevra v1.8.6!

https://github.com/sovaz1997/Zevra/rele ... 1.8.6_r672

tc=5s+0.05s, Hash=64mb, book=8moves_GM.pgn

Code: Select all

Score of Zevra v1.8.6 r672 vs Zevra v1.8.5 r664: 457 - 244 - 299  [0.607] 1000
Elo difference: 75.15 +/- 18.26
tc=20s+0.2s, Hash=64mb, book=8moves_GM.pgn

Code: Select all

Score of Zevra v1.8.6 r672 vs Zevra v1.8.5 r664: 423 - 192 - 385  [0.616] 1000
Elo difference: 81.73 +/- 17.04
Zevra and Ethereal testing: https://sites.google.com/view/scet-testing/zevra
Zevra 2 - my chess engine.
Binary, source and description here: https://github.com/sovaz1997/Zevra2

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CMCanavessi
Posts: 886
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Location: Argentina

Re: Zevra 1.6.2 r536

Post by CMCanavessi » Sat Sep 01, 2018 7:36 pm

Nice improvement !!!
Follow my tournament and some Leela gauntlets live at http://twitch.tv/ccls

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