Search found 3298 matches

by Sven
Sat Nov 09, 2019 6:21 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Minic raw speed
Replies: 16
Views: 1163

Re: Minic raw speed

The only scoring effort that can have performance impact is most probably SEE. Do you apply SEE to all captures, or only to "losing" captures? That sounds like a weird question to me :oops: I define which capture is good or bad using SEE, how can I know a capture is good before SEE ?. If the moving...
by Sven
Sat Nov 09, 2019 6:14 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Minic raw speed
Replies: 16
Views: 1163

Re: Minic raw speed

Minic is sorting all moves as soon as TT move is not a beta cut-off You could benchmark how often your first move cuts off if it isn't a TT hit, this will probably be something like 50-70%. Means, in all those cases, sorting the full move list is unnecessary because you're only going to use the top...
by Sven
Tue Oct 29, 2019 9:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Ubuntu Shell file
Replies: 7
Views: 713

Re: Ubuntu Shell file

Look wrote:
Tue Oct 29, 2019 1:29 pm
What to do ?

Code: Select all

:~$ source cd_test.sh
But why would you want to do that?
by Sven
Thu Oct 24, 2019 9:34 pm
Forum: Computer Chess Club: General Topics
Topic: longest 6-man EGTB win
Replies: 40
Views: 2101

Re: longest 6-man EGTB win

RubiChess wrote:
Thu Oct 24, 2019 4:51 pm
This simple 1-liner on my syzygy folder (with some 7-men files and only searching for exactly 100 ply wins) gives:

Code: Select all

G:\syzygy>findstr /C:"100 ply;" *.txt
I don't think this is necessarily the right solution. The longest win could involve captures or pawn moves which reset the 50-moves counter.
by Sven
Wed Oct 09, 2019 10:10 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: kiwipete perft position
Replies: 55
Views: 11957

Re: kiwipete perft position

Right: a "piece type" and a "color" do not have a state. But it is possible to model pieces as objects with a piece type and color that are assigned to squares, so moving them means changing that assignment and is therefore a state change. Also pawn promotion would be a state change. A problem of th...
by Sven
Thu Oct 03, 2019 1:55 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Basic endgames
Replies: 33
Views: 5646

Re: Basic endgames

I think your node counts are way too high for these simple endgames. May I assume that you detect K vs K as an immediate draw and return 0? Independent from that remark, node counters should always be 64 bit integers since 2^32 will be exceeded frequently. Regarding your king capture scoring, I have...
by Sven
Sun Sep 08, 2019 12:26 pm
Forum: Computer Chess Club: General Topics
Topic: Irresistible Force Meets Immovable Object
Replies: 3
Views: 693

Re: Irresistible Force Meets Immovable Object

Nice fortress position. There is no need at all to move the rook, Black can simply shuffle the king which is perfectly defended by the knight. White might even manage to advance the e-pawn with the help of Kf5 and the queen but then Black would give R+N for Q+P, and it would be a draw with the remai...
by Sven
Sat Sep 07, 2019 12:43 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: What's the best Lazy SMP logic?
Replies: 3
Views: 1508

Re: What's the best Lazy SMP logic?

The implementation has changed after SF10. Look into search.cpp (search for "votes").
by Sven
Thu Sep 05, 2019 10:53 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: How to stop monitoring PV's ?
Replies: 7
Views: 935

Re: How to stop monitoring PV's ?

What exactly does "monitoring PVs" mean in your case? If your engine conforms to either of the two protocols CECP (WinBoard) or UCI then it will print lines containing PV information during search, either in the standard (or even extended) WinBoard format or through an appropriate "info" command for...
by Sven
Tue Sep 03, 2019 10:48 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Source control Visual Studio Community 2019
Replies: 9
Views: 1615

Re: Source control Visual Studio Community 2019

Looks like there was no problem at all with this visual studio version and source control. I added a second project but did no commit. So when I changed a file it did not show it had been changed so I mistakenly assumed there was no source control on that project. The common problem of GUIs that we...