Hello all,
Nirvanchess 2.2 has been released.
More details can be found at http://nirvanachess.blogspot.com/2015/1 ... lease.html
The biggest changes in this version are bug fixes to both single and smp searches. Smp should also scale well beyond 4 cores.
Overall strength increase is somewhere in the range of 50 elo.
Nirvanachess 2.2 Release
Moderators: hgm, Rebel, chrisw
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Re: Nirvanachess 2.2 Release
Thanks Thomas, and congrats on the progress. Any chance of getting multivariation mode into a future release?
Thanks.
Tim.
Thanks.
Tim.
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Re: Nirvanachess 2.2 Release
Perhaps. There are already quite a few engines that are stronger than Nirvana that have this feature though. I am not aware that too many people use Nirvana for analysis.
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Re: Nirvanachess 2.2 Release
Considering how strong Nirvana is becoming, I suspect that more and more people will be interested in this feature.cetormenter wrote:Perhaps. There are already quite a few engines that are stronger than Nirvana that have this feature though. I am not aware that too many people use Nirvana for analysis.
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Re: Nirvanachess 2.2 Release
Hello Thomas,
Thx
Ingo
On your Blog you wrote "Overall strength gain ~50 elo after 5000 games against 2.0a at 60"+0.05". Is there any strength increase expected to Version 2.1c?cetormenter wrote:... Overall strength increase is somewhere in the range of 50 elo.
Thx
Ingo
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Re: Downgrade ?
2.1c......................3032 Elo CCRL 4/40IWB wrote:
On your Blog you wrote "Overall strength gain ~50 elo after 5000 games against 2.0a at 60"+0.05". Is there any strength increase expected to Version 2.1c?
2.0a......................2973 Elo CCRL 4/40
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+59 Elo gain
2.2 face to 2.0a..........+50 Elo gain
=> 9 Elo points downgrade !
?????
SilvianR
NR :
Biblio:
http://www.computerchess.org.uk/ccrl/40 ... t_all.html
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Re: Nirvanachess 2.2 Release
IWB wrote:Hello Thomas,
On your Blog you wrote "Overall strength gain ~50 elo after 5000 games against 2.0a at 60"+0.05". Is there any strength increase expected to Version 2.1c?cetormenter wrote:... Overall strength increase is somewhere in the range of 50 elo.
Thx
Ingo
I don't know what you are talking about .
I simply forgot to update that part from my copy and paste from the previous post. The ~50 elo gain is compared to 2.1c. Obviously this is in self play at quick time controls so I expect the gain on ratings list to be smaller. Probably closer to 20 elo or so.
Here is a short run from a gauntlet I am currently running:
Code: Select all
Rank Name Elo + - games score oppo. draws
1 Stockfish 288 35 35 490 89% -42 18%
2 Gull 268 34 34 494 87% -42 17%
3 Senpai 18 31 31 362 61% -57 29%
4 NirvanaDEV 0 22 22 781 43% 63 25%
5 Texel -11 27 27 490 54% -42 22%
6 Protector -40 26 26 492 50% -42 34%
7 Nirvana2.1 -57 12 12 2534 36% 57 26%
8 Naum -59 26 26 493 47% -42 30%
9 Hannibal -64 26 26 494 47% -42 31%
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Re: Nirvanachess 2.2 Release
PERFECT. Nirvanachess will be my next thing to test.cetormenter wrote:I simply forgot to update that part from my copy and paste from the previous post. The ~50 elo gain is compared to 2.1c.
Thx
Ingo
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Re: Nirvanachess 2.2 Release
Congrats,cetormenter wrote:Obviously this is in self play at quick time controls so I expect the gain on ratings list to be smaller. Probably closer to 20 elo or so.
my last 60 elo self-play shrunk to 18 on CCRL, it's the first time I got less than 50%