Author: Uri Blass
Date: 01:00:55 11/10/02
Go up one level in this thread
On November 10, 2002 at 01:09:44, Russell Reagan wrote: >On November 10, 2002 at 00:11:16, Robert Hyatt wrote: > >>I don't see how you could use my PV to predict anything. I have already played >>my move before I kibitz my PV, so how will you use it? > >For example, I play 1. e4 against Crafty. Crafty thinks (no book) and replies >with 1. ... d5, and gives the PV line: > >11 22.98 0.34 1. ... d5 2. exd5 Nf6 3. c4 c6 4. dxc6 > Nxc6 5. Nf3 Bf5 6. d4 e6 > >Now my program takes this, and now my program knows that you're program is going >to ponder 2. exd5 (if that's of any use to me), and I can have a pretty good >idea that next time Crafty is going to play 2. ... Nf6, since that is what was >in the PV line. When I tried this manually, Crafty plays Nf6 like I thought, so >I would have pondered the correct move because of what you kibitzed. > >Maybe I could go ahead and assume that several of the moves in the PV are going >to be correct, and I'll start my search from 1. ... d5 2. exd5 Nf6 and get an >extra ply or two. So now I'm pondering almost every move you play correctly, and >I've got a few plies of extra search if it turns out that I can assume the first >few moves of the PV will be what you play, which it probably will. > >I'd like to know if this is possible with the current kibitzing requirement. If >it is, I think that's one of the worst rules I've ever heard of. My engine could >probably do something with the score you kibitz too. Maybe search longer if your >engine thinks it's better. Maybe it sees something I don't, so I'll search a >little longer. Or maybe, since I don't like this rule, my engine's PV's will be >1 move long, always, and my scores will be on some absurd scale, and in base 26. I do not expect programmers to waste many hours of programming only for cheating. It is better to spend the time on developing your program. The rules are supposed to prevent simple cheating when no special programming effort was used for it. Simple cheating can happen when the game is played manually and the programmer can help his program to play better by changing it's time management. Uri
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