If the official compile use this TB and if it continues in the future, I'll download them.j_romang wrote:Your download is way faster Josh !
I'm also planning to share the 6 pieces tablebases (80Go), so maybe a torrent will be more usefull for that.
Unofficial stockfish 28.04.2013 with rtb tablebases support
Moderator: Ras
-
- Posts: 5290
- Joined: Thu Mar 09, 2006 9:40 am
- Full name: Vincent Lejeune
Re: Unofficial stockfish 28.04.2013 with rtb tablebases supp
-
- Posts: 613
- Joined: Sun Jan 18, 2009 7:03 am
Re: Unofficial stockfish 28.04.2013 with rtb tablebases supp
Thanks for doing the hard work....
Now it would be very interesting to see if we can get any ELO improvement with this...
I'd like to force loading all 5-men WDL bases directly into RAM and then see how it goes...
I'm just wondering if doing popcnt(pos.pieces()) every time in search is more expensive than keeping track of the total number of pieces under Position class...
Now it would be very interesting to see if we can get any ELO improvement with this...
I'd like to force loading all 5-men WDL bases directly into RAM and then see how it goes...
I'm just wondering if doing popcnt(pos.pieces()) every time in search is more expensive than keeping track of the total number of pieces under Position class...
Joona Kiiski
-
- Posts: 5290
- Joined: Thu Mar 09, 2006 9:40 am
- Full name: Vincent Lejeune
Re: Unofficial stockfish 28.04.2013 with rtb tablebases supp
Note that tests with other engines show no measurable improvement with 6 pcs TB. The interesting part is the manual analysis with engine. It's painful to constantly show engine theorical draws (ex : R vs R+f&h pawns).zamar wrote:...Now it would be very interesting to see if we can get any ELO improvement with this...
...
-
- Posts: 4790
- Joined: Sat Mar 11, 2006 12:42 am
Re: Unofficial stockfish 28.04.2013 with rtb tablebases supp
velmarin wrote:Thanks for the engine.
I miss libstdc + +-6.dll, download by
https://code.google.com/p/wtfu/download ... l&can=2&q=
But breaks in my computer.
The Tablebases also can be downloaded from here,
Kindly Rises pot Joshua Shriver:
http://www.talkchess.com/forum/viewtopic.php?t=47758
Strictly as one good friend to another, who cares about you- when this all blows up 9 ways from Sunday- have you put much thought into an exit door.
Watch your back-
george
-
- Posts: 1600
- Joined: Mon Feb 21, 2011 9:48 am
Re: Unofficial stockfish 28.04.2013 with rtb tablebases supp
I do not understand anything.geots wrote:Strictly as one good friend to another, who cares about you- when this all blows up 9 ways from Sunday- have you put much thought into an exit door.velmarin wrote:Thanks for the engine.
I miss libstdc + +-6.dll, download by
https://code.google.com/p/wtfu/download ... l&can=2&q=
But breaks in my computer.
The Tablebases also can be downloaded from here,
Kindly Rises pot Joshua Shriver:
http://www.talkchess.com/forum/viewtopic.php?t=47758
Watch your back-
george
But thank you very much, George.
-
- Posts: 4190
- Joined: Wed Nov 25, 2009 1:47 am
Re: Unofficial stockfish 28.04.2013 with rtb tablebases supp
To have any measurable improvement, effective depth reached on average search where TBs are accessed should be at least 30-35.Vinvin wrote:Note that tests with other engines show no measurable improvement with 6 pcs TB. The interesting part is the manual analysis with engine. It's painful to constantly show engine theorical draws (ex : R vs R+f&h pawns).zamar wrote:...Now it would be very interesting to see if we can get any ELO improvement with this...
...
This is impossible with TCs used for testing. Ergo, testing TB effect in the way ppl do engine testing (TCs with TPM of couple of hundreds of ms at best) is pointless.
-
- Posts: 10825
- Joined: Thu Mar 09, 2006 12:37 am
- Location: Tel-Aviv Israel
Re: Unofficial stockfish 28.04.2013 with rtb tablebases supp
Can you explain why?Milos wrote:To have any measurable improvement, effective depth reached on average search where TBs are accessed should be at least 30-35.Vinvin wrote:Note that tests with other engines show no measurable improvement with 6 pcs TB. The interesting part is the manual analysis with engine. It's painful to constantly show engine theorical draws (ex : R vs R+f&h pawns).zamar wrote:...Now it would be very interesting to see if we can get any ELO improvement with this...
...
This is impossible with TCs used for testing. Ergo, testing TB effect in the way ppl do engine testing (TCs with TPM of couple of hundreds of ms at best) is pointless.
I think that the main advantage of tablebases should be at fast time control when engines do many mistakes without them.
Uri
-
- Posts: 1600
- Joined: Mon Feb 21, 2011 9:48 am
-
- Posts: 4190
- Joined: Wed Nov 25, 2009 1:47 am
Re: Unofficial stockfish 28.04.2013 with rtb tablebases supp
You think totally wrongly.Uri Blass wrote:Can you explain why?
I think that the main advantage of tablebases should be at fast time control when engines do many mistakes without them.
Higher depth reached=>more TB access, more TB access=>better score.
Statistically it's quite obvious...
Could also look the other way around. Looking at TB at higher depth, means seeing a correct score earlier, meaning more chance to select a correct move.
This is also kind of obvious...

-
- Posts: 79
- Joined: Mon May 16, 2011 2:52 am
Re: Unofficial stockfish 28.04.2013 with rtb tablebases supp
You are right Joona, the popcount seems a bad idea ; I'll try to keep track of the total number of pieces.
Currently there is a ~1% slowdown in regular search (when tablebases are not accessed).
Currently there is a ~1% slowdown in regular search (when tablebases are not accessed).