Sting-sf-45 release

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Vinvin
Posts: 4027
Joined: Thu Mar 09, 2006 8:40 am

Re: Sting-sf-45 release

Post by Vinvin » Thu May 22, 2014 10:31 am

lech wrote:Many thanks Vincent for your examples. One of them is very useful and show that my idea (sting-sf-x) needs much more work.
The problem how to get the value draw leads to the reversal question how to avoid a zero value. The second question seems to be much more difficult. It is not easy to get the proper code even if an idea seems to be be good.
In my warm head there are new ideas and I believe in the future I will do it much better, though.
...
It would be very great to have a SF-Solver (as in the past Rybka-Winfinder and Tactical Houdini 3 and 4). But draw detection added.
On Wikipedia, you can find some very interesting fortress too : http://en.wikipedia.org/wiki/Fortress_%28chess%29
This great one : Nxe4!!
[d]8/8/8/3k2p1/4p3/2b1P1pP/4KNP1/8 w - - 0 82

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velmarin
Posts: 1579
Joined: Mon Feb 21, 2011 8:48 am

Re: Sting-sf-45 release

Post by velmarin » Thu May 22, 2014 10:52 am

Later I'll put it on my blog,
Popcnt Intel version, and version easily.
Microsoft XP version with OLD_LOCKS.

Marek, maybe you should make an effort and move the code to the new Stockfish,
Not only for performance, even modernize .
Users can compile their machines with system BYO, example.

https://www.dropbox.com/s/t5i3trjj60c0b ... _SF_4.5.7z

BBauer
Posts: 655
Joined: Wed Mar 08, 2006 7:58 pm

Re: Sting-sf-45 release

Post by BBauer » Thu May 22, 2014 5:04 pm

My modified Stockfish gives Ng4.
Wiki says:
White would lose after 1. Nd1 Kc4 or 1. Nh1 Be5 or 1. Ng4 Bg7.
I cannot see the white win after Ng4
Kind regards
Bernhard

zullil
Posts: 4878
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA

Re: Sting-sf-45 release

Post by zullil » Thu May 22, 2014 5:33 pm

BBauer wrote:My modified Stockfish gives Ng4.
Wiki says:
White would lose after 1. Nd1 Kc4 or 1. Nh1 Be5 or 1. Ng4 Bg7.
I cannot see the white win after Ng4
Kind regards
Bernhard
[D]8/8/8/3k2p1/4p1N1/2b1P1pP/4K1P1/8 b - - 1 82

I think your question is "Does Black win?"

BBauer
Posts: 655
Joined: Wed Mar 08, 2006 7:58 pm

Re: Sting-sf-45 release

Post by BBauer » Thu May 22, 2014 5:45 pm

Sorry.
You are obviously right.
My question is: How can black win after Ng4

Kind regards
Bernhard

lech
Posts: 921
Joined: Sun Feb 14, 2010 9:02 pm

Re: Sting-sf-45 release

Post by lech » Thu May 22, 2014 6:27 pm

velmarin wrote:Later I'll put it on my blog,
Popcnt Intel version, and version easily.
Microsoft XP version with OLD_LOCKS.

Marek, maybe you should make an effort and move the code to the new Stockfish,
Not only for performance, even modernize .
Users can compile their machines with system BYO, example.

https://www.dropbox.com/s/t5i3trjj60c0b ... _SF_4.5.7z
Many thanks Jose for your compilations.

I am afreaid to use any version of Stockfish and to find a horse tail in my bed. Seriously, it is rather your last help. :D
Maybe, I can't be friendly, but let me be useful.

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velmarin
Posts: 1579
Joined: Mon Feb 21, 2011 8:48 am

Re: Sting-sf-45 release

Post by velmarin » Thu May 22, 2014 6:44 pm

lech wrote:[ Seriously, it is rather your last help. :D
Not there is a downside, it's entertaining. :)

But I see Sting almost 50 percent slower than the latest Stockfish.
And it's not your goal Marek, but fans always compare brute force. :?

zullil
Posts: 4878
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA

Re: Sting-sf-45 release

Post by zullil » Thu May 22, 2014 9:11 pm

BBauer wrote:Sorry.
You are obviously right.
My question is: How can black win after Ng4

Kind regards
Bernhard
I don't see it either.

lech
Posts: 921
Joined: Sun Feb 14, 2010 9:02 pm

Re: Sting-sf-45 release

Post by lech » Thu May 22, 2014 9:38 pm

velmarin wrote: But I see Sting almost 50 percent slower than the latest Stockfish.
And it's not your goal Marek, but fans always compare brute force. :?
I compare Sting only to Stockfish 211 and I am happy.
Muchas gracias amigo! :D
Maybe, I can't be friendly, but let me be useful.

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Master Om
Posts: 251
Joined: Wed Nov 24, 2010 9:57 am
Location: INDIA

Re: Sting-sf-45 release

Post by Master Om » Fri May 23, 2014 2:11 am

lech wrote:
velmarin wrote: But I see Sting almost 50 percent slower than the latest Stockfish.
And it's not your goal Marek, but fans always compare brute force. :?
I compare Sting only to Stockfish 211 and I am happy.
Muchas gracias amigo! :D
Thank you for a great Engine. Waiting for the draw fortress detection.
Always Expect the Unexpected

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