TalkChess.com
Hosted by Your Move Chess & Games

Author Message
Álvaro Begué

Joined: 09 Mar 2010
Posts: 177
Location: New York

 Post subject: Re: Sudden death time controls    Posted: Tue May 15, 2012 1:36 pm I'll describe an idea through an example. Say you have to play 3 moves in the next 20 minutes and then you have 30 minutes for the next 30 moves, then 30 minutes for the rest of the game. You can decide how much time to use based on either: * 3 moves in 20 minutes * 33 moves in 50 minutes * full game in 80 minutes Because I want the behavior to converge to sudden death if the number of moves is very large, I cap the number of moves at 30, which is what I use for sudden death (of course you can use a different number or heuristics for this): * 3 moves in 20 minutes => 400 seconds/move * 33 moves in 50 minutes => 100 seconds/move (after limiting the number of moves to 30) * full game in 80 minutes => 160 seconds/move (after limiting the number of moves to 30) Now take the minimum of those numbers: 100 seconds/move. That's it. This mechanism doesn't suffer from the problem Jon described, and it also doesn't suffer from pathological behavior if the time control is 1,000,000 moves in 30 minutes (spending 1 minute is more reasonable than 1.8 milliseconds). In Ruy-López we also have a hard time limit to make sure we don't lose on time if the search gets stuck in a deep subtree, and that hard limit is set by looking only at the next time control.
 Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First
Subject Author Date/Time
Larry Kaufman Thu May 10, 2012 3:17 am
Mincho Georgiev Thu May 10, 2012 5:42 am
H.G.Muller Thu May 10, 2012 8:20 am
Mincho Georgiev Thu May 10, 2012 10:08 am
Robert Hyatt Tue May 15, 2012 12:30 am
Uri Blass Thu May 10, 2012 8:54 am
Joona Kiiski Thu May 10, 2012 10:57 am
Larry Kaufman Fri May 11, 2012 2:24 am
Joona Kiiski Fri May 11, 2012 12:37 pm
Uri Blass Fri May 11, 2012 1:12 pm
Larry Kaufman Fri May 11, 2012 2:21 pm
Joona Kiiski Fri May 11, 2012 3:47 pm
Evert Glebbeek Thu May 10, 2012 11:25 am
Jon Dart Fri May 11, 2012 3:23 pm
Robert Hyatt Tue May 15, 2012 12:39 am
Re: Sudden death time controls Álvaro Begué Tue May 15, 2012 1:36 pm
Jon Dart Sat May 19, 2012 12:07 pm
H.G.Muller Sat May 19, 2012 12:59 pm
Álvaro Begué Sat May 19, 2012 3:56 pm
Robert Hyatt Tue May 15, 2012 12:27 am

 Jump to: Select a forum Computer Chess Club Forums----------------Computer Chess Club: General TopicsComputer Chess Club: Tournaments and MatchesComputer Chess Club: Programming and Technical DiscussionsComputer Chess Club: Engine Origins Other Forums----------------Chess Thinkers ForumForum Help and Suggestions
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum