[computer-go] End of games in KGS

2006-11-27 Thread sylvain . gelly
Hello, I recently added a feature to MoGo that allows it to "accept a pass" (I mean pass after the opponent pass) even far from the end of the game. It is to be gentler against human (not fill every intersection :)). So now there is a non trivial dead string analysis. Looking at the games again

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread igo
>> I assume in Go the difference is also a very large handicap. > in any case, i think that the difference is probably much larger than just > one or two stones. :) It is said if has 4 stones handicap, every Pro will accept games play with God even if bet his life. When in limited local fighti

Re: [computer-go] End of games in KGS

2006-11-27 Thread Aloril
On Mon, 2006-11-27 at 11:10 +0100, [EMAIL PROTECTED] wrote: : > Looking at the games against humans, I saw that sometimes the human does not > accept the dead strings MoGo proposes and then allow a score to the game > which is not the real score. I have undersood that if the 2 opponents do not

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread steve uurtamo
> It is said if has 4 stones handicap, every Pro will > accept games play with God even if bet his life. wow. i thought that there were at least two stones worth of slack in the opening, and another two in ko fighting. :) > When in limited local fighting like TumeGo, Pro > plays just like God.

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Don Dailey
I would not trust this. Usually, masters cannot be objective and fair when they are referring to their own playing ability. - Don On Mon, 2006-11-27 at 19:35 +0900, igo wrote: > >> I assume in Go the difference is also a very large handicap. > > in any case, i think that the difference is prob

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Don Dailey
And just to add to this, I'm sure their tune would change if the bet was really for their life. - Don On Mon, 2006-11-27 at 07:23 -0500, Don Dailey wrote: > I would not trust this. Usually, masters cannot be objective and fair > when they are referring to their own playing ability. > > - Don

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Eduardo Sabbatella
We don't really know how good masters play... They are the best we know, but perhaps its tooo far from the perfect game. Perhaps the perfect 19x19 game starts in the center. --- Don Dailey <[EMAIL PROTECTED]> escribió: > And just to add to this, I'm sure their tune would > change if the bet > w

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Chrilly
I assume in Go the difference is also a very large handicap. in any case, i think that the difference is probably much larger than just one or two stones. :) It is said if has 4 stones handicap, every Pro will accept games play with God even if bet his life. When in limited local fightin

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Mark Boon
On 27-nov-06, at 08:35, igo wrote: It is said if has 4 stones handicap, every Pro will accept games play with God even if bet his life. I don't know if that's a generally accpted estimate. But I know that Otake Hideo once said he'd bet his life with 4 stones against God. He also added he

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Heikki Levanto
On Mon, Nov 27, 2006 at 07:35:58PM +0900, igo wrote: > It is said if has 4 stones handicap, every Pro will accept games play > with God even if bet his life. isn't there more than 4 stones difference between a 1-dan pro and a 9-dan pro? It might be that the all best pros might be 4 stones below a

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Eduardo Sabbatella
It seems that pro have very high self esteem. ;-) Until be create a pro-beating-go-engine :-D > Otake Hideo once said he'd bet his life with 4 > stones against God. He > also added he wasn't so sure he'd win but that he > had his pride too. __

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Nick Wedd
In message <[EMAIL PROTECTED]>, steve uurtamo <[EMAIL PROTECTED]> writes It is said if has 4 stones handicap, every Pro will accept games play with God even if bet his life. wow. i thought that there were at least two stones worth of slack in the opening, and another two in ko fighting. :)

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Chrilly
It seems that pro have very high self esteem. ;-) Until be create a pro-beating-go-engine :-D Otake Hideo once said he'd bet his life with 4 stones against God. He also added he wasn't so sure he'd win but that he had his This self-esteem is necessary for becoming a top-player (in any kind o

Re: [computer-go] Positions illustrative of computer stupidity ?

2006-11-27 Thread Steven Clark
Computer stupidity? How about how GNUGo has no problem invading under my 4,4 stone, but refuses to invade under my 5,5 stones? I assume this is because there is a joseki entry for 4,4, but none for 5,5 openings. Attached is a rather silly game I played against GNUGo exploiting this fact (I will ad

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread steve uurtamo
> >wow. i thought that there were at least two > >stones worth of slack in the opening, and another > >two in ko fighting. :) > > Seems unlikely. I can't imagine two competent > players, say 1p or > better, coming out of the opening with one of them > having a two-stone > lead. one of them i

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread steve uurtamo
> > And, the right to win all ko fights without > > having to fight them > > is only worth half a stone. > > uh, that depends upon what the kos are for. and actually, what i meant was that its threats might be so complicated that they would be ignored. s. ___

Re: [computer-go] End of games in KGS

2006-11-27 Thread nando
Hi Sylvain, FWIW, I have also observed this behavior recently in a rated game against my bot ggexp and it seems actually possible to cheat bots on KGS, even when kgs-genmove_cleanup is implemented (which is the case for GNU Go and clones). I don't have the logs anymore, but I clearly recall seein

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Don Dailey
A good point to consider - is "God" actively trying to confuse his opponent and complicate things, or is he simply playing objectively best moves? - Don On Mon, 2006-11-27 at 07:39 -0800, steve uurtamo wrote: > > >wow. i thought that there were at least two > > >stones worth of slack in the open

[computer-go] December KGS online computer Go Tournament

2006-11-27 Thread Nick Wedd
The December 2006 KGS computer Go tournament will be next Sunday, December 3rd, in the European morning and Asian evening, starting at 09:00 UTC and ending at about 14:00 UTC. Both divisions will be five-round Swiss, and use 19x19 boards with 28 minutes sudden death, Chinese rules, and 7.5 poin

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread steve uurtamo
> A good point to consider - is "God" actively trying > to confuse his > opponent and complicate things, or is he simply > playing objectively best > moves? good question. if his goal is to win with zero handicap, all he has to do is pick a branch that ends with a win for, say, W. if he is start

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Don Dailey
I've often wondered how I would program a computer to play a game, chess or go, if I had perfect information about the game.How do you make it more difficult to win against a fallible opponent? I assume that in many positions there are more than 1 maximizing move. I would of course restrict th

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Heikki Levanto
On Mon, Nov 27, 2006 at 12:59:30PM -0500, Don Dailey wrote: > A good point to consider - is "God" actively trying to confuse his > opponent and complicate things, or is he simply playing objectively best > moves? > I have heard this terminology somewhere, but can't remember where: A "god" plays

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread steve uurtamo
> I guess you would simply steer towards positions > where the computer had > lot's of "good" moves and the opponent had very few > "good" moves. this is essentially the same thing -- if you play in a branch where the highest percentage of moves lead to a win for you, then this means that your

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread steve uurtamo
> But a "god" will win over the > "devil", as he will not > fall in any of the traps, but can use the suboptimal > play spent in > setting those up. actually, whomever is slated to win with perfect play (1st or 2nd player) will win, because "setting up traps" isn't necessarily inefficient -- it ju

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Don Dailey
A good "devil" tries to win by MORE than he deserves and will try to win in a losing position. I have heard this terminology before and my understanding was that a devil still plays a perfect game, he just tries to be deceptive about it. I don't see any point in not playing perfect if you can u

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Ray Tayek
At 05:59 AM 11/27/2006, you wrote: On Mon, Nov 27, 2006 at 07:35:58PM +0900, igo wrote: > It is said if has 4 stones handicap, every Pro will accept games play > with God even if bet his life. isn't there more than 4 stones difference between a 1-dan pro and a 9-dan pro? It might be that the all

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Jim O'Flaherty, Jr.
Don (and others), Depending upon your definition of God, I think most of the "God" conversation is kind of silly. Given He is omnipotent, he has the ability to alter one of His created entities such that it is not possible to beat Him PRIOR to casting His reply as white. The alteration cou

Re: [computer-go] Positions illustrative of computer stupidity ?

2006-11-27 Thread alain Baeckeroot
Le lundi 27 novembre 2006 16:36, Steven Clark a écrit : > Computer stupidity? How about how GNUGo has no problem invading under my 4,4 > stone, but refuses to invade under my 5,5 stones? I assume this is because > there is a joseki entry for 4,4, but none for 5,5 openings. Attached is a > rather si

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Don Dailey
Jim, When we say "God" we really mean "omniscient player" and I don't attach any omniscience other than pure GO skill.It's just a convenient way of saying this, but it is misleading because it conjures up some of the factors you mention. > Finally, what is an objectively best move? That's e

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Chrilly
In the second game Fritz against Kramnik Fritz played strategically very poor (or Kramnik very strong), Kramnik avoided a 3-times repetition "offer" of Fritz, but at the end Kramnik missed an easy to see mate in 1!! and lost very badly. Thats the end of the match. He will not be able to recover

Re: [computer-go] .. if Monte-Carlo programs would play infinitestrong

2006-11-27 Thread Darren Cook
>> > It is said if has 4 stones handicap, every Pro will accept games play >> > with God even if bet his life. > ... > iirc it is 1/3 of a stone betwen pro-dan ranks. I'm glad somebody brought that up. When pros talk about 2-3 stones they are talking 6-9 ranks, meaning "god" (i.e. perfect play) is

[computer-go] Orego 3.03 posted

2006-11-27 Thread Peter Drake
If anyone's interested in digging through our C++ code, here it is: http://www.lclark.edu/~drake/go/ Peter Drake Assistant Professor of Computer Science Lewis & Clark College http://www.lclark.edu/~drake/ ___ computer-go mailing list computer-go@com

[computer-go] position

2006-11-27 Thread Thomas Wolf
The preliminary advert below is not precisely for a position in computer Go but maybe still of interest to someone on the list. Essential is experience in high performance computing and a research topic which is somehow in bioinformatics (hardly anyone on this list) or math, e.g. combinatorial gam