Re: [computer-go] Re: Interesting problem

2007-01-05 Thread David Doshay
And so we enter the "second phase" ... On 5, Jan 2007, at 8:50 AM, Mark Boon wrote: I think you are mistaken for the real reason of the 'second phase', where he who passes has to pay a point. This 'second phase' only comes into effect after both sides have passed. It's to solve disputes in

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread David Doshay
On 5, Jan 2007, at 8:50 AM, Mark Boon wrote: How would you feel if your opponent played out possible all ko- threats at the end of the game? I once played a game against a Chinese graduate student who did exactly that. I was quite impressed with how thorough he was, as if that kind of com

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread Robert Jasiek
Mark Boon wrote: > How would you feel if your opponent played out possible all ko-threats at the end of the game? I am happy to win the game, of course. the fact that we humans feel bad doing something like that Not "we humans". I don't feel bad when my opponent does it. When answers are n

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread dave . devos
In our club we estimate twice the komi for sente equal to a handicap stone, except for the first handicap stone one, which is just one time the komi. Using a komi of 6.5 for sente amounts to: Hand. Value 1 = 6.5 2 = 19.5 3 = 32.5 4 = 45.5 5 = 58.5 6 = 71.5 7 = 84.5 8 =

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread alain Baeckeroot
Le jeudi 4 janvier 2007 22:37, Don Dailey a écrit : > I have a question. With perfect play, obviously a 9 stone handicap > game is dead lost. If 2 perfect players played a game where one > was given the 9 stones, and they played for maximum territory (obviously > it doesn't make sense to play fo

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread Christoph Birk
On Fri, 5 Jan 2007, steve uurtamo wrote: i think that the attached initial (13-stone) setup requires life to be made in the center rather than the sides or corners, but it looks difficult. a stronger player can comment, perhaps? It should be possible to live with an attachment at the 3-3 poin

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread Christoph Birk
I think the whole discussion about Japanese vs. Chinese scoring is moot in the context of "silly" invasions. If my opponent passes and 1) I am ahead ... I pass and win. 2) I am behind ... I may start an invasion if I think I have a chance; loosing a couple more points (Japanese) does not matter

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread steve uurtamo
>> If 2 perfect players played a game where one >> was given the 9 stones, and they played for maximum territory (obviously >> it doesn't make sense to play for a win) would the handicapped player >> be able to hold some territory at the end of the game? > > > This is the same as asking

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread Mark Boon
On 4-jan-07, at 18:53, David Doshay wrote: I see it as perfectly fair that the bot with the better ability to read, and thus knows it can pass, should be rewarded for that reading skill. I think you are mistaken for the real reason of the 'second phase', where he who passes has to pay a po

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread Mark Boon
On 4-jan-07, at 19:37, Don Dailey wrote: If 2 perfect players played a game where one was given the 9 stones, and they played for maximum territory (obviously it doesn't make sense to play for a win) would the handicapped player be able to hold some territory at the end of the game? This

Re: Fw: [computer-go] Re: Interesting problem

2007-01-05 Thread Robert Jasiek
Petri Pitkanen wrote: Like in example from tournament game where a bot makes hundreds of useless moves. Rules that encourage that simply are not good. The only way to prevent this is a mandatory pass whenever a pass is a possible perfect play. When you think about it, you would furthermore wan

[computer-go] Memory - efficient UCT proposal.

2007-01-05 Thread Łukasz Lew
Just add a new child only when parent is visited more times than X. You will loose only a minimal amount of information. Hope this helps :) Lukasz ___ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/comp

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread Nick Apperson
well, i'm pretty sure that against a top player i would need around 20 stones to have much of a shot, but if I remember correctly, at the professional level, a 17-18 stone free placement is needed to take the entire board. A 9 stone handicap is not nearly enough to take the whole board no matter

Re: [computer-go] Re: Interesting problem

2007-01-05 Thread Heikki Levanto
On Thu, Jan 04, 2007 at 04:37:08PM -0500, Don Dailey wrote: > > I have a question. With perfect play, obviously a 9 stone handicap > game is dead lost. If 2 perfect players played a game where one > was given the 9 stones, and they played for maximum territory (obviously > it doesn't make sense

Re: Fw: [computer-go] Re: Interesting problem

2007-01-05 Thread Petri Pitkanen
opponent and eventually could have passed for free. Had game been under Japanese rules I would have been 'forced' to think whether reply was needed and thus think a lot longer time for replies and possibly lost on time because reply would have been needed probably too often. Conclusion: Under Chi

Re: Fw: [computer-go] Re: Interesting problem

2007-01-05 Thread Aloril
On Thu, 2007-01-04 at 09:08 -0800, steve uurtamo wrote: > there's a nice rule of thumb that says that you should only > play moves whose outcome results in your opponent playing > *what you think is the best move*. there's simply nothing > more irritating than someone attempting an unreasonable >