Hi.
I published a new version of Andscacs, 0.83
http://www.andscacs.com/andscacs083.zip
Changes:
* Solved little bugs.
* Slight improvements on king safety.
* Improved prunes, null move and lmr.
* Improved main hash.
* Some small speed improvements.
* Improved evaluation of passed pawns.
* Improved evaluation of rooks, knights and bishops.
* Small improvements on multi processor mode.
It's maybe 20 elo stronger or a little more.
Was really difficult, most ideas I try do not work; nothing extraordinary to happen, of course
Andscacs - New version 0.83
Moderators: hgm, Rebel, chrisw
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Andscacs - New version 0.83
Daniel José - http://www.andscacs.com
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- Full name: Werner Schüle
Re: Andscacs - New version 0.83
Thanks Daniel,
yes we know - it is not easy to improve an engine when you are under the best 20th of the world!
best wishes
yes we know - it is not easy to improve an engine when you are under the best 20th of the world!
best wishes
Werner
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Re: Andscacs - New version 0.83
Congratulations Daniel
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Re: Andscacs - New version 0.83
Thanks all!
To give a little idea of the evolution:
To give a little idea of the evolution:
Code: Select all
100' + 0.03 0.82
Rank Name Elo + - games score oppo. draws
1 Komodo 5.1r2 64-bit 107 40 39 198 69% -33 24%
2 Elektro 1.2 43 37 37 200 62% -33 34%
3 BlackMamba 2.0 x64 21 38 38 198 58% -33 26%
4 Protector 1.8.0 8 37 36 198 56% -33 36%
5 Texel 1.05 64-bit -1 37 37 198 55% -33 31%
6 Nirvanachess 2.1c -7 36 36 200 54% -33 37%
7 Naum 4.6 -16 38 37 200 53% -33 27%
8 Hannibal 1.5 x64 -26 36 36 198 51% -33 41%
9 Andscacs 0.82 -33 12 12 1986 45% 3 32%
10 Senpai 1.0 -45 37 37 198 48% -33 32%
11 Gull 1.2 x64 -51 37 37 198 47% -33 30%
100' + 0.03 0.83
Rank Name Elo + - games score oppo. draws
1 Komodo 5.1r2 64-bit 144 28 28 380 72% -4 32%
2 Elektro 1.2 61 28 27 384 59% -4 27%
3 BlackMamba 2.0 x64 52 27 27 384 58% -4 32%
4 Protector 1.8.0 20 26 26 378 54% -4 42%
5 Texel 1.05 64-bit 0 27 27 384 51% -4 32%
6 Andscacs 0.82206 -4 9 9 3819 49% 0 33%
7 Hannibal 1.5 x64 -35 27 27 380 45% -4 33%
8 Nirvanachess 2.1c -40 26 26 384 44% -4 35%
9 Naum 4.6 -45 26 27 384 44% -4 34%
10 Senpai 1.0 -61 27 27 378 42% -4 30%
11 Gull 1.2 x64 -92 27 28 383 37% -4 30%
Daniel José - http://www.andscacs.com
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Re: Andscacs - New version 0.83
cdani wrote:Hi.
I published a new version of Andscacs, 0.83
http://www.andscacs.com/andscacs083.zip
Changes:
* Solved little bugs.
* Slight improvements on king safety.
* Improved prunes, null move and lmr.
* Improved main hash.
* Some small speed improvements.
* Improved evaluation of passed pawns.
* Improved evaluation of rooks, knights and bishops.
* Small improvements on multi processor mode.
It's maybe 20 elo stronger or a little more.
Was really difficult, most ideas I try do not work; nothing extraordinary to happen, of course
Thank You!! Keep Up the good work my friend...testing shows your very close to the top....some loses hard to explain...depth seems to not be the issue.....loses games in late middlegame....fades late....cause unknown
in my opinion.....Thx AR
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Re: Andscacs - New version 0.83
Thanks Daniel.cdani wrote:Hi.
I published a new version of Andscacs, 0.83
http://www.andscacs.com/andscacs083.zip
Changes:
* Solved little bugs.
* Slight improvements on king safety.
* Improved prunes, null move and lmr.
* Improved main hash.
* Some small speed improvements.
* Improved evaluation of passed pawns.
* Improved evaluation of rooks, knights and bishops.
* Small improvements on multi processor mode.
It's maybe 20 elo stronger or a little more.
Was really difficult, most ideas I try do not work; nothing extraordinary to happen, of course
gbanksnz at gmail.com
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- Location: Alcalá de Henares, Madrid (Spain)
Re: Andscacs - New version 0.83
Good news and congratulations Daniel !!
If your problem has a solution then...why worry about it? If your problem doesn’t have solution then...why worry about it?
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- Full name: Frank Quisinsky
Re: Andscacs - New version 0.83
Very nice to see how strong is your work if we are looking in all the older versions. I hope that you have a long time fun on computer chess.
I added your new version on my ToDo list.
Thanks!
Best
Frank
I added your new version on my ToDo list.
Thanks!
Best
Frank
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Re: Already in tests
THANK YOU !
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Re: Andscacs - New version 0.83
Some detailed changes that maybe someone will like to implement in his engine:
* Optimized a little the prefetches.
* Added idea of re-search at intermediate depth if reduction is very high from Stockfish.
* In move ordering, a little penalization for move king outside rank 0 when queens.
* Do not consider pawn shelter of king when in center.
* Grouped half of the hash entry in a single uint64_t.
* Added the idea "If both sides have only pawns, score for potential unstoppable pawns" of Stockfish.
* Increased bonus for bishop pair that cannot be exchanged for other bishop or knights of rival because it does not have them.
* Diminish bonus for bishop pair if the rival knights are good or the center is very blocked.
* Diminish attack value if only one attacker.
* If rival has more pawns in front of king, increase safety penalization. Idea from Hakkapelitta.
* Increased penalization for underdevelopment on some piece configurations.
Daniel José - http://www.andscacs.com