Author: Chuck
Date: 15:03:02 05/24/99
Go up one level in this thread
On May 24, 1999 at 17:54:52, blass uri wrote: > >On May 24, 1999 at 17:38:52, KarinsDad wrote: > >>On May 24, 1999 at 17:05:04, blass uri wrote: >> >>> >>>I agree that a better implementation can also help, but the main point is that >>>the take back can help in cases of tactical mistakes that you understand after a >>>small number of moves that you are in trouble. >>> >>>If the position of one program (with better positional understanding) is going >>>to improve slowly then the opponent will have no idea when it went wrong so the >>>take back is not going to help it. >>> >>>Uri >> >>Does this mean that the takeback will be limited to one ply at a given time? >> >>If so, then that may not be enough to undo a tactical problem (i.e. it takes 14 >>ply to see the flaw, but the program only looked 10 ply). >> >>If not, then it may be possible to take back to the point of minimizing the >>positional advantage (i.e. the program searches for any way to avoid the trap it >>walked into, even going back 4 moves). > > >It is not going to be linited to 1 ply but it is going to be limited because the >program is losing 5 minutes for every move that it take back to the opponent so >if it take back 40 moves then it is going to lose 5*40=200 minutes and this say >losing on time. > >If a program does many tactical mistakes then it is going to lose but if a >program is a better positional player and does one tactical mistake for 40 >moves then the take back is going to help it. > >Uri > >> >>This is hard to evaluate. >> >>KarinsDad :) In addition to take back, it would be important for the program to note any conditions related to it, so you could analyze it later and see why. Also, I think it would generally have to pull back 5 moves or more, and punishing the program by taking away 5 minutes for each move would mean that it would likely just step right into another hole. So I don't think time should be taken from the program doing the takeback, giving the opponent 5 minutes would suffice. Yes, I could see this as a valid method for improving a computers play, but then again you go back to a question of whether the knowledge needed is overall worth the time cost. The likely idea is to use just enough knowledge to score more than 50% against any opponent (thus you could win a match) since the search speed seems to be so critical to computers. Chuck
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.