Search found 16741 matches

by bob
Sun Jun 16, 2019 12:40 am
Forum: Computer Chess Club: General Topics
Topic: WCCC vs TCEC Chess Engine Competitions..
Replies: 33
Views: 1609

Re: WCCC vs TCEC Chess Engine Competitions..

Way past time to get off the old anti-ACM bandwagon, Way past time to get off the old ICGA bandwagon also unless they reinvent themselves. Pretty sad comment. The main thrust of the ICCA (then ICGA) was to foster interest in computer chess. They STILL provide that service via the annual mind games ...
by bob
Fri Jun 14, 2019 1:38 am
Forum: Computer Chess Club: General Topics
Topic: WCCC vs TCEC Chess Engine Competitions..
Replies: 33
Views: 1609

Re: WCCC vs TCEC Chess Engine Competitions..

Way past time to get off the old anti-ACM bandwagon, Way past time to get off the old ICGA bandwagon also unless they reinvent themselves. Pretty sad comment. The main thrust of the ICCA (then ICGA) was to foster interest in computer chess. They STILL provide that service via the annual mind games ...
by bob
Fri Jun 14, 2019 1:31 am
Forum: Computer Chess Club: General Topics
Topic: WCCC vs TCEC Chess Engine Competitions..
Replies: 33
Views: 1609

Re: WCCC vs TCEC Chess Engine Competitions..

I hardly missed an ACM event, which started in 1970. I didn't compete until 1976, as we had no interactive terminal access on our computers at USM until we bought our Xerox Sigma 9. The very early events were VERY "dicey" to be kind. I remember things like pawns on the 8th rank, programs that got hu...
by bob
Thu Jun 13, 2019 11:38 pm
Forum: Computer Chess Club: General Topics
Topic: WCCC vs TCEC Chess Engine Competitions..
Replies: 33
Views: 1609

Re: WCCC vs TCEC Chess Engine Competitions..

If I had to post one complaint about the ICGA (ICCA at the time) it would be that they catered too much to the commercial programs/programmers. One example: Ken Thompson and I proposed, in the late 70's, that the ACM/ICCA tournaments should move to an automatic interface mode. There were several rea...
by bob
Wed Jun 12, 2019 2:24 am
Forum: Computer Chess Club: General Topics
Topic: WCCC vs TCEC Chess Engine Competitions..
Replies: 33
Views: 1609

Re: WCCC vs TCEC Chess Engine Competitions..

I would like to add something here, since "some" are trying to keep various types of "bitterness" alive and well. Computer chess went through three really distinct phases. Phase 1 started in 1970 and continued into the early 90's, where we had annual ACM computer chess tournaments (and every three y...
by bob
Wed Jun 12, 2019 1:30 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: max number of pseudo legal move
Replies: 22
Views: 798

Re: max number of pseudo legal move

A LONG time ago, I decided to make this particular question a non issue. I use a big array (vector). I have another vector last[ply]. The idea is then that for all plies, last[ply] points one past the last move for the current ply. If you want to iterate over the complete move list for ply=4, you do...
by bob
Wed Jun 05, 2019 3:27 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: strategies for finding slowdows in lazy smp
Replies: 25
Views: 914

Re: strategies for finding slowdows in lazy smp

Good observation. Either this is (a) total-NPS divided by threads or else (b) it is broken. About all NPS is useful for is to detect architectural issues, such as cache thrashing / false sharing or bandwidth issues, processor throttling due to heat, memory bottlenecks, etc. The number of cores is ge...
by bob
Tue May 07, 2019 4:07 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: (possible stupid question) asymmetrical search
Replies: 5
Views: 466

Re: (possible stupid question) asymmetrical search

Richard Lang did this in the old Chess Genius engines. As but one example, you can make it harder to make a tactical mistake yourself, using caution, but then make it harder to find wild tactical shots since you don't do the same types of things for both sides. Idea made sense back in the days of li...
by bob
Tue May 07, 2019 4:00 am
Forum: Computer Chess Club: General Topics
Topic: Authors of chess engines getting crushed by their creations
Replies: 17
Views: 1449

Re: Authors of chess engines getting crushed by their creations

Crap. Meant to write "have not been gone, am not coming back." That is, I never left. :) just haven't had much to say. It's amazing how busy life gets when you own a boat, an RV, automobiles, house, have family, travel, most everything is "do it yourself" and so forth. Sometimes I am busier now than...
by bob
Sun May 05, 2019 10:26 pm
Forum: Computer Chess Club: General Topics
Topic: Authors of chess engines getting crushed by their creations
Replies: 17
Views: 1449

Re: Authors of chess engines getting crushed by their creations

Wasn't intending to make this anything about me. However, for the record, my first chess program played its first move in very late 1968. I was a computer science major at the University of Southern Mississippi and star trek / spock / computer chess had already caught my interest. There was practica...