Author: Robert Hyatt
Date: 11:36:49 04/25/98
Go up one level in this thread
On April 25, 1998 at 10:48:18, blass uri wrote: > >On April 25, 1998 at 09:02:46, Robert Hyatt wrote: > >>On April 25, 1998 at 05:39:58, blass uri wrote: >> >>>1)I think that if a computer program "thinks" it stand better then it >>>should "think" more to accept a move and to check more the >>>possibilities of the opponent. >>>did some programmer try this idea? >> >>what does taking more time accomplish??? other than to get you into >>time trouble later in the game.. >> >my idea was not to waste more time about a move but to waste more time >about accepting moves and less time about rejecting moves. >It is important when the computer evaluate it has adventage because >in this way the computer can see more quickly if its evaluation is >wrong. >If its evaluation is right it is not very important if it miss something >better >because the result may be that it win more slowly > >> >>> >>>2)did a computer programmer try to find the probability his(her) >>>program changes its mind if he(she) double the time of it >>>as a function of time? >> >> >>find the ICCA Journal article "Crafty goes deep" written by Monty >>Newborn. He analyzes this on a large set of random positions, searched >>all the way out to 15 plies.. >> >> >> >> >>> >>>3)did any computer programmer try to give the computer to calculate >>>what is the best move if the opponent will choose the second best >>>move and decide about this move that it should be analysed? >> >> >>again, what would be the point? If your "best" move prediction isn't >>very accurate, that needs to be fixed, rather than trying to >>second-guess >>yourself and waste time searching things you think are second best.. > >the point is if the "best" move evaluation is correct but there is >something better for example I see that programs do not devote >enough time to Chaos move in the 1974 computers championship >against Chess4.0 Nxe6. >I checked that after the forced line Nxe6 fxe6 Qxe6+ Be7 Re1 >my programs evaluate the positon after some minutes as adventage >for white while before Nxe6 the position is evaluated >as advantage for black. >it is clear that if white can tell black not to play some move Nxe6 is >best >so Nxe6 should be checked Note that for every position where Nxe6 is correct, there are 1,000 positions where Nxe6 loses outright... so trying to pick up such movs is a speed issue, *not* a time spent issue... I would not want to waste time on such moves at the expense of other things in the search...
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.