chessforyou Bettina&Terry77

chessforyou Bettina&Terry77

HomeCalendarFAQRegisterLog in
WELCOME TO FORUM OF Angels77 * named in memory of Bettina & Terry
Search
 
 

Display results as :
 
Rechercher Advanced Search
Search
 
 

Display results as :
 
Rechercher Advanced Search
Latest topics
» SF-McBrain v3.0 TCEC-X By MichaelB7
Today at 9:34 am by Belladonna

» Ranomi-2017.ctg
Fri Oct 20, 2017 7:54 pm by STOCKFISH26102014

» StuckFish....... WITH A " T " !!!!!!!! By MaxCarlson
Wed Oct 18, 2017 7:17 pm by Wendy D Green

» SUPER TOURNAMENT XXVIII 8CPU By Graham Banks
Tue Oct 17, 2017 8:16 pm by Belladonna

» Sting SF 8.9 By Marek Kwiatkowski
Tue Oct 17, 2017 5:36 pm by Belladonna

» Ranomi_170929.bin
Sun Oct 15, 2017 9:48 pm by STOCKFISH26102014

» Re: FCP Database (all games)
Sat Oct 14, 2017 3:32 pm by rahulkapoor2019

» White.Black.ctg new link
Thu Oct 12, 2017 9:24 pm by STOCKFISH26102014

» Sting SF 8.8 by Marek Kwiatkowski
Fri Oct 06, 2017 12:37 am by Belladonna

Latest topics
» SF-McBrain v3.0 TCEC-X By MichaelB7
Today at 9:34 am by Belladonna

» Ranomi-2017.ctg
Fri Oct 20, 2017 7:54 pm by STOCKFISH26102014

» StuckFish....... WITH A " T " !!!!!!!! By MaxCarlson
Wed Oct 18, 2017 7:17 pm by Wendy D Green

» SUPER TOURNAMENT XXVIII 8CPU By Graham Banks
Tue Oct 17, 2017 8:16 pm by Belladonna

» Sting SF 8.9 By Marek Kwiatkowski
Tue Oct 17, 2017 5:36 pm by Belladonna

» Ranomi_170929.bin
Sun Oct 15, 2017 9:48 pm by STOCKFISH26102014

» Re: FCP Database (all games)
Sat Oct 14, 2017 3:32 pm by rahulkapoor2019

» White.Black.ctg new link
Thu Oct 12, 2017 9:24 pm by STOCKFISH26102014

» Sting SF 8.8 by Marek Kwiatkowski
Fri Oct 06, 2017 12:37 am by Belladonna

Navigation
 Portal
 Index
 Memberlist
 Profile
 FAQ
 Search
Navigation
 Portal
 Index
 Memberlist
 Profile
 FAQ
 Search
Forum
Forum
Affiliates
free forum
 


Affiliates
free forum
 



Share | 
 

 Natural TB by Marco Costalba

View previous topic View next topic Go down 
AuthorMessage
st peter
V.I.P.MEMBER
V.I.P.MEMBER
avatar

Male Posts : 704
Reputation : 1187
Join date : 2011-06-06
Location : Earth

PostSubject: Natural TB by Marco Costalba   Sun May 29, 2016 3:49 pm

Posted By Marco Costalba  guitar  

Marco Costalba has modified current SF+sygyzy in a way that he has called "Natural TB".

The idea is to use TB but avoiding the unnatural TB scores and in particular the DTZ ones (hiding mates, unnatural sacrifices, etc) but retain the 'good play' of syzygy where 'good play' is defined as follow:

If in a given position SF with old syzygy leads to a win, then it should do also now with 'Natural TB'

For people interested in the technical details, let's add that I have implemented two changes to the current behavior:

1) At root, moves that do not preserve the win or the draw are skipped, but the DTZ score of the remaining moves is ignored.

2) At WDL probing time, deep in the tree, instead of returning an adjusted WDL score, only alpha, draw and beta is returned according if the position is loss, draw or win (cursed win and losses at the moment are ignored).

This is still experimental code, so maybe there is some issue moreover for the moment I have not run matches between the 2 versions, I am more interested to see if this version is more "natural" to play than the original but I expect the ELO should be equivalent between the 2 versions.

Sources are here:

[You must be registered and logged in to see this link.]
Back to top Go down
 
Natural TB by Marco Costalba
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» Natural Solar and Planetary Phenomena
» Marco's HC Challenge
» My Natural Collection
» evolving AI's in some organisms
» Emoticons & Smilies

Permissions in this forum:You cannot reply to topics in this forum
chessforyou Bettina&Terry77 :: ENGlNES :: tests and tournements :: Data Base .test games etc-
Jump to: