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Re: Sting-sf-45 release
Posted: Thu May 22, 2014 12:31 pm
by Vinvin
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
Re: Sting-sf-45 release
Posted: Thu May 22, 2014 12:52 pm
by velmarin
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
Re: Sting-sf-45 release
Posted: Thu May 22, 2014 7:04 pm
by BBauer
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
Re: Sting-sf-45 release
Posted: Thu May 22, 2014 7:33 pm
by zullil
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?"
Re: Sting-sf-45 release
Posted: Thu May 22, 2014 7:45 pm
by BBauer
Sorry.
You are obviously right.
My question is: How can black win after Ng4
Kind regards
Bernhard
Re: Sting-sf-45 release
Posted: Thu May 22, 2014 8:27 pm
by lech
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.
Re: Sting-sf-45 release
Posted: Thu May 22, 2014 8:44 pm
by velmarin
lech wrote:[ Seriously, it is rather your last help.
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.
Re: Sting-sf-45 release
Posted: Thu May 22, 2014 11:11 pm
by zullil
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.
Re: Sting-sf-45 release
Posted: Thu May 22, 2014 11:38 pm
by lech
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!
Re: Sting-sf-45 release
Posted: Fri May 23, 2014 4:11 am
by Master Om
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!
Thank you for a great Engine. Waiting for the draw fortress detection.