Search found 262 matches

by jorose
Thu Jan 29, 2015 11:27 pm
Forum: Computer Chess Club: General Topics
Topic: Initiative
Replies: 11
Views: 2781

Re: Initiative

This an interesting example but it illustrates initiative very differently then you might think. Mainly due to the fact that the only reason black is doing even remotely well is because it is his turn to move! He can push back whites pieces, which for the most part aren't actually that well placed (...
by jorose
Thu Jan 29, 2015 10:01 pm
Forum: Computer Chess Club: General Topics
Topic: e4, f4, d4, c4
Replies: 16
Views: 2041

Re: e4, f4, d4, c4

I disagree out of a number of reasons. First because in principle I don't think you should base PST values based off of relative piece placement. Specifically your logic will crumble the moment black decides to castle queenside. Instead you could evaluate things pawn distance to king or some other r...
by jorose
Thu Jan 29, 2015 9:44 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Speed more important than accuracy?
Replies: 5
Views: 1514

Re: Speed more important than accuracy?

I think of it like this: essentially an engine at its core is nothing more then an over-sized evaluation function. A perfect engine would search depth 1 and return either +mateScore, 0, or -mateScore. Obviously this is near impossible if not completely impossible. So how do we deal with this dilemma...
by jorose
Wed Jan 28, 2015 8:08 pm
Forum: Computer Chess Club: General Topics
Topic: Verified mates that are hard to find
Replies: 5
Views: 1429

Re: Verified mates that are hard to find

Hi this is perfect for me! Tested the first one and my engine took 22 seconds to find Bxf7+ which SF then confirmed to be mate (and impressively suggested it at depth 0) so it seems to be the perfect difficulty for him. That being said, at much higher depth SF realised Qd1d5 mates even faster... Do ...
by jorose
Wed Jan 28, 2015 7:48 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Weak engine
Replies: 6
Views: 1467

Re: Weak engine

Oh, Im still in the "no king safety" phase myself and it is glorious! On top of that my engine is currently tuned so he is not particularly fond of material and loves activity (people who faced him in his debut, HGM's tournament last Saturday, might agree) which makes it particularly entertaining to...
by jorose
Sat Jan 24, 2015 4:52 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney January
Replies: 48
Views: 5710

Re: On-line engine blitz tourney January

Just wanted to mention that I think Ive gotten it working. The good news is it was fixed the moment I upgraded xboard. The bad news is that since I somehow didnt manage to compile it I can't tell you much more as to why it works now. Among other news, I am now on Xubuntu 4.10... Don't ask :P Looking...
by jorose
Sat Jan 24, 2015 2:55 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney January
Replies: 48
Views: 5710

Re: On-line engine blitz tourney January

Hmm, I guess it depends on what you define as few and more importantly what you define as "weak"? If I manage to get everything working I expect to end up somewhere at the bottom quarter of the table with my engine.
by jorose
Sat Jan 24, 2015 2:10 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney January
Replies: 48
Views: 5710

Re: On-line engine blitz tourney January

I got the following message in the terminal as it crashed: Player "StockfishRB" isn't listening to unregistered tells.1.Segmentation fault (core dumped) Im running on Xubuntu 14.04 LTS which is essentially just Ubuntu 14.04 with the XFCE desktop environment. Kernel is 3.13.0-44-generic I tri...
by jorose
Sat Jan 24, 2015 12:50 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney January
Replies: 48
Views: 5710

Re: On-line engine blitz tourney January

Thank you for the swift reply! Xboard is "version 4.7.3 + Fairy-Max4.8Q (with Zippy code)" I ran everything again with -debug. This time Stockfish had white so my engine didn't even make a move =( Here is the end of the log file <ICS: Issuing: GuestEWZT (++++) StockfishRB (2261) unrated blit...
by jorose
Sat Jan 24, 2015 11:49 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney January
Replies: 48
Views: 5710

Re: On-line engine blitz tourney January

As of currently I am able to log on to the server as a guest (yay!) including with my engine, as well as start a game against StockfishRB without issues. However, after my engine has successfully made its first move and SF replies, xboard instantly crashes with a segfault, presumably due to my engin...