Search found 257 matches

by Isaac
Wed Aug 28, 2019 10:49 am
Forum: Computer Chess Club: General Topics
Topic: OpenSpiel: DeepMind's new generic games library
Replies: 5
Views: 1357

Re: OpenSpiel: DeepMind's new generic games library

Here's a tetris AI that uses 4 functions to assess/compute the score of a given position: https://github.com/LeeYiyuan/tetrisai, as explained there: https://codemyroad.wordpress.com/2013/04/14/tetris-ai-the-near-perfect-player/. The guy apparently used a genetic algorithm to determine the best value...
by Isaac
Wed Aug 28, 2019 8:23 am
Forum: Computer Chess Club: General Topics
Topic: OpenSpiel: DeepMind's new generic games library
Replies: 5
Views: 1357

Re: OpenSpiel: DeepMind's new generic games library

Very nice! Would it be straightforward to implement an AI that plays to tetris? Where the drawing of tetrominoes would be as random as possible (instead of the fake random function commonly used, which does not allow more than 7 or so tetrominoes to be picked without leaving the other different tetr...
by Isaac
Tue Aug 13, 2019 8:04 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: One billion random games
Replies: 15
Views: 4426

Re: One billion random games

*) How are the wins distributed over white wins and black wins? Does white have an advantage even in the random limit, and if so, how big is it? I can answer this without the need to check the results. The most probable games are the shortest ones. That's because the probability to play a particula...
by Isaac
Wed Jan 16, 2019 7:15 pm
Forum: Computer Chess Club: General Topics
Topic: The "tsvetkov" style vs Leela?
Replies: 1
Views: 607

The "tsvetkov" style vs Leela?

I have taken a long hiatus regarding chess news, so I do not really know the current strength of Leela (looks like about SF 10 now). I do not know whether tsvetkov is still participating in this forum. Anyway, he taught us his style (years ago I tried it and could draw SF on my android phone with si...
by Isaac
Sat May 12, 2018 12:25 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 588
Views: 131686

Re: 7-men Syzygy attempt

I indeed messed up with the quoting part.
Now your points are, I hope, crystal clear.
by Isaac
Sat May 12, 2018 12:00 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 588
Views: 131686

Re: 7-men Syzygy attempt

OK, what you meant is that playing with a time control as opposed to fixed depth lets both engines search deeper in endgame positions. That is indeed true and fixing depth indeed artificially lowers the level of endgame play of both engines. I think you're again missing Ronald's point. In addition,...
by Isaac
Wed Mar 07, 2018 7:55 pm
Forum: Computer Chess Club: General Topics
Topic: The history of Syzygy tablebases
Replies: 26
Views: 5570

Re: The history of Syzygy tablebases

I had generated 5-piece WDL+DTZ TBs for regular chess and suicide chess in 2005 with a similar compression scheme (based on "Re-Pair compression" followed by Huffman). The current generator is an almost complete rewrite which made the generator much faster and multi-threaded and which added many id...
by Isaac
Tue Mar 06, 2018 6:45 pm
Forum: Computer Chess Club: General Topics
Topic: The history of Syzygy tablebases
Replies: 26
Views: 5570

The history of Syzygy tablebases

Hello Ronald de Man, Could you describe the situation of end game tablebases when you started to work on the Syzygy ones? After the success of Gaviota tablebases which reduced a lot the size of files (due to compression I suppose), what made you think you could come up with something a bit different...
by Isaac
Thu Mar 01, 2018 8:55 pm
Forum: Computer Chess Club: General Topics
Topic: Banned from TCEC chat
Replies: 40
Views: 12023

Re: Banned from TCEC chat

Wow, scary and not that surprising I'd say. I didn't know about these kind of experiments, but I'm an ignorant in psychology. Thanks for the link.
by Isaac
Mon Feb 19, 2018 7:32 pm
Forum: Computer Chess Club: General Topics
Topic: question about non determinism of chess programs
Replies: 5
Views: 1647

Re: question about non determinism of chess programs

Interesting question. Maybe this thread has some relevant information: http://www.talkchess.com/forum/viewtopi ... w=&start=0.