[computer-go] Tool for handshaped MC trees?

2008-08-29 Thread Ingo Althöfer
Hello everyone, does someone of you know if there exists some (software) tool for generating handshaped Monte Carlo trees, for instance for 9x9 go ? Such a tool might be helpful in designing new MC algorithms, for instance new variants of UCT. Ingo Althofer (using MC + variants in his project

[computer-go] Goal-directedness of Monte-Carlo

2008-09-08 Thread Ingo Althöfer
In the last few weeks I have been investigating Monte-Carlo (MC) game tree search on a rather abstract level. Especially I was able to reproduce the following behaviour of MC in a very clear model: MC is playing most goal-directed (zielgerichtet in German) when the position is balanced or when

[computer-go] Goal-directedness of Monte-Carlo

2008-09-08 Thread Ingo Althöfer
Hello Gian-Carlo, Gian-Carlo Pascutto wrote: There has been discussion here about dynamic komi to keep the winning rate close to 50%. As far as I saw there was no clear conclusion about whether that works. Some people argued that it should not exist and measuring objective winning rates is

[computer-go] Re: Goal-directedness of Monte-Carlo

2008-09-11 Thread Ingo Althöfer
Olivier Teytaud wrote: ... I find the following elements interesting: 1) MoGo was seemingly weaker in handicap games... Was this (feeled) weakness on both sides (giver and taker) of handicap tables? 2) MoGo has become stronger (and the difference is huge for long time settings) with more

[computer-go] Bernd Bruegmann picture

2008-09-11 Thread Ingo Althöfer
In November 2007, there was a long night of science in Jena. My group presented games and research on games. One of the visitors was Dr. Bernd Bruegmann (professor for gravitational theory in theoretical physics), who had been the first to apply Monte Carlo search in computer go back in 1993.

[computer-go] sgf format for non-quadratic board sizes ?

2008-09-19 Thread Ingo Althöfer
Hello, does there exist a generalisation of the sgf-format for rectangular board sizes? The background of my question is that I would like to try how MCTS works on small boards, and there are not so many quadratically ones... (For instance, I am eager to see what happens on 7x5-board.) By the

[computer-go] Re: sgf format for non-quadratic board sizes?

2008-09-19 Thread Ingo Althöfer
Dear Urban, thx for the quick reply. does there exist a generalisation of the sgf-format for rectangular board sizes? What exactly do you mean by generalization? You can use SZ[1] to define the size of your rectangular board. [1] http://www.red-bean.com/sgf/properties.html#SZ I did not

[computer-go] MyungWan vs MoGo

2008-09-22 Thread Ingo Althöfer
Hello, on September 21, there was a new exhibition match between MyungWan (8p) and MoGo (on massive hardware). They played two 19x19 games with 7 stones handicap, first a short warm-up with 15 min per side, and then a long one with 90 min per side. The short one turned into a loose-ladder

[computer-go] Analysis of 6x6 Go

2008-09-22 Thread Ingo Althöfer
Stefan Reisz is the author of the website http://www.reisz.de/gohome.htm There he claims to have a solution for 6x6-Go with Japanese rules. The outcome of his handmade analysis is that komi=3 would be fair. The analysis may be downloaded from the site, as sgf file. Does someone here know of

[computer-go] Analysis of 6x6 Go

2008-09-22 Thread Ingo Althöfer
Hello Robert, thx for the feedback. Does someone here know of other (documented) attempts to solve 6x6 Go? Didn't Erik van der Werf do it under his rules? He did it for 5x5-Go, see at http://erikvanderwerf.tengen.nl/5x5/5x5solved.html Ingo. -- Pt! Schon vom neuen GMX MultiMessenger

[computer-go] Analysis of 6x6 Go

2008-09-24 Thread Ingo Althöfer
Erik van der Werf wrote: ... Optimal play on 6x6 under Chinese rules is expected to give a Black win by 4 points. I want to lay open, why my expectation for 6x6-Go under Chinese rules is +2 for Black. With Leela, I played two games (or game fragments) in analysis mode, starting the machine

[computer-go] Results of recent Computer Go events

2008-09-30 Thread Ingo Althöfer
Gian-Carlo Pascutto wrote: Apparently it was ruled a loss for Many Faces of Go. I am appealing it - there is no reason why the refree has to intervene when the players agree on the score. The result of the game could be very important for the tournament result. Hello, I looked into the

[computer-go] Correct Komi for 6x6 is 2.0

2008-09-30 Thread Ingo Althöfer
Hello Magnus, interesting and strange. I went through your constructed game (it is repeated here without the in-between text) bC4 wD3 bC3 wD4 bD5 wE5 bD2 wE2 ... ... bE3 wE4 bE1 wF3!!!... ... bC1 wC5 bB5 wD6 bB6 wF1!... ...bF2 wC6 bB4! ...wF1 bE6 wF6 bF2 wE3 bD1 wF1 bF5 wF4 bF2 wPass

[computer-go] Correct Komi for 6x6 is 2.0

2008-10-01 Thread Ingo Althöfer
Magnus Persson wrote: Ingo Althofer wrote: But ... when White instead of passing continues wC2, the game should go on with bB2 wF1 bPass wF2, and now the score is B+2. Black ignores w C2 and plays F1. F1 by Black would be a huge blunder, because then White plays B1 and kills the black

[computer-go] Correct Komi for 6x6 is 2.0

2008-10-01 Thread Ingo Althöfer
Hello Magnus, there was indeed a notation error in your original posting. There you give 13.C1 (see last line below) and not 13.C2 as in the sgf. Ingo. I have been trying to see what Valkyria does. But it is a little unstable when it reads deep at 6x6. It should not be a problem for

[computer-go] Congratulations to David Fotland!

2008-10-01 Thread Ingo Althöfer
His program Many Faces of Go has become winner in the 9x9-Go competition in the 13th International Computer Games Championship, held in Beijing. Rank 2 for MoGo after tiebreak against Leela. http://www.grappa.univ-lille3.fr/icga/tournament.php?id=180 with table and sgf of many games. Today the

[computer-go] Computer-Go on small boards

2008-10-01 Thread Ingo Althöfer
Gian-Carlo Pascutto replied: Don Dailey wrote: 4. I believe Leela, at a higher level and with a correction book would play perfect or very close to perfect on 6x6. This may depend on seki issues however, it may not be possible for Leela (or other Go programs) to play

[computer-go] On ranks 2 and 3 of 9x9 in Beijing

2008-10-02 Thread Ingo Althöfer
Gian-Carlo Pascutto wrote: the tiebreak is not yet finished! Place 2 and 3 are still undecided. Hmm. In the tournament rules http://www.grappa.univ-lille3.fr/icga/event_info.php?id=20#Rules it reads Tie-breaking: (a) if precisely two participants are tied for a medal place, precisely two

[computer-go] 7.5-komi for 9x9 in Beijing

2008-10-02 Thread Ingo Althöfer
Gian-Carlo Pascutto wrote: I'd have some preference for playing the decisive game with komi = 6.5, but apparently thats not possible on KGS. But that should not be a problem, as long as the operators do not believe in the final verdict of KGS. I think with komi = 7.5 white is scoring very

[computer-go] Congratulations again to David Fotland !

2008-10-04 Thread Ingo Althöfer
Hello, Many Faces of Go has won also the 19x19 competition in the 13th International Computer Games Championships, with a 100 % score. The silver medal goes to MoGo (only loss against MFoG), Leela achieves Bronze (only two losses, against MFoG and MoGo). Details, including sgf-files, under

[computer-go] Tiebreak 9x9 in Beijing ?!

2008-10-04 Thread Ingo Althöfer
Olivier Teytaud wrote here: ... and good luck for both MoGo and Leela for the silver medal in 9x9 :-) I saw on KGS that one tiebreak game between MoGo and Leela was played today: starting time 13:00 GMT, MoGo with Black starting with 4,3 move, and Leela winning. When I understood GCP

[computer-go] Re: Tiebreak 9x9 in Beijing ?!

2008-10-04 Thread Ingo Althöfer
Hello Gian-Carlo, Gian-Carlo Pascutto wrote: Hideki Kato wrote: I don't know the detail but the cluster (or the connection) had some trouble and the play-off will be resumed this morning (at Beijing time; +0800). Leela has been online and ready the whole night but I still see no sign of

[computer-go] Tiebreak 9x9 in Beijing complete

2008-10-05 Thread Ingo Althöfer
Hello all, finally the 4th tiebreak game in 9x9 Go has been played in Beijing: Leela won with Black against MoGo, thus getting the silver medal by a 3:1 victory in the 4-game tiebreak. This last game is interesting because it was a win for Black. However, so far it is not completely clear which

[computer-go] komi for 9x9

2008-10-08 Thread Ingo Althöfer
Hello all, in other games (on other servers) games start with a komi-bidding procedure. Only when both sides propose the same value for komi, colors are given by chance. In my eyes, for Go it would be useful also to allow integral komi (7.0 for 9x9, for instance). Ingo. -- GMX Kostenlose

[computer-go] komi for 9x9

2008-10-09 Thread Ingo Althöfer
David Fotland wrote: Integer komi has a problem for many MCTS implementations, since a playout only returns win or loss. For instance, also in the UTC-implementation of Cameron Browne's Yavalath, as given under yavalath on the site http://www.cameronius.com/ Browne had in mind only larger

[computer-go] Go with modified scores

2008-10-09 Thread Ingo Althöfer
Some of you may want to stone me for this heresy, but read carfully before. When you have MCST-/UCT for Go that can work for real-valued scores (or at least a version that can work for three-valued scores: winm, draw, loss), you may look at Go with different scoring systems. Example: A win by

[computer-go] Go with modified scores

2008-10-10 Thread Ingo Althöfer
Some replies on my original mail indicate that I did not make clear the motivation of my proposal. You have to distinguish several scenarii when maximizing the playing strength/value of your Go program: (a) auto-play (or play between different versions of your prog) (a') play against other

[computer-go] Questions of Beijing photos

2008-10-10 Thread Ingo Althöfer
Hello Hiroshi, thanks for the many nice photos from Beijing. I have a few questions (indeed, I have many, but will ask only a few of them): * On which picture(s) can I find you? * Is Feng Hsiung Hsu (guest of honor, when I understand correctly) on some of your pictures? * Is the programmer

[computer-go] Go/Games with modified scores

2008-10-11 Thread Ingo Althöfer
During the last few days I have been meditating a lot about the questiion whether taking into account the margin of win into MCTS (UCT) may help or hurt. I do not have a go program by my own, so for the moment I have to believe what programmers are saying, namely that MCTS with margin of win as a

[computer-go] Re: computer-go textbook ?

2008-11-04 Thread Ingo Althöfer
Claus Reinke wrote: I'm not currently in teaching, but I'd be interested to hear about uses of computer-go in this context, ie, not so much as a specialist course but as a focus for programming and group projects. Let me tell you the experiences in my group at Jena University. I am in a

[computer-go] Monte-Carlo and Japanese rules

2008-11-06 Thread Ingo Althöfer
Hello all, two questions. (i) Do there exist strong 9x9-go programs on Monte-Carlo base for Japanese rules? (ii) Having available only programs for Chinese rules, but playing in a tournament with Japanese rules, which special tricks and settings should be used to maximise winning chances? (This

[computer-go] Monte-Carlo and Japanese rules

2008-11-09 Thread Ingo Althöfer
Hi Remi, thx for your hints. I am playing 9x9 interactively, with taking advice from Leela and ManyFaces. The basic procedure is to run both in a giving position - and making the final choice amongst their move proposals with my human brain. So I have some better potential for corrections then

[computer-go] Re: Opportunity to promote ...

2008-11-17 Thread Ingo Althöfer
Dear Bob Hearn, it is not what you have been looking for, but nevertheless I want to ask you if the title of your talk Games Computers Can't Play is still up-to-date. I would accept something like Games Computers Could not play well before 2003, but Monte Carlo has changed our world. Ingo

[computer-go] Re: Opportunity to promote ...

2008-11-18 Thread Ingo Althöfer
Dear Bob, thanks for your explanations. Now I see clearer. First, the title is deliberately provocative. Accepted. Also, though, the talk is not just about go: some of it is about formally undecidable games, that computers provably can't play well (and of course, that humans can't

[computer-go] One-sided 2-inch Rules

2008-11-18 Thread Ingo Althöfer
Hello, one of the basic problems of go newbies is their tendency to place the next stone near to the latest stone of the opponent. Sometimes this is called the 2-inch heuristic of beginners. What do you think about a formalized variant of Go with one-sided distance-k rule? Let k be some

[computer-go] On Don Dailey's first chess program

2008-11-21 Thread Ingo Althöfer
Dear Don, sorry to step in here, but I can't believe what you write. So I would like to know some facts. My first chess program only sold a few copies in Europe. What was the name of your program? In which year was it published? For what platform had it been? But I came to find out that

[computer-go] On Don Dailey's first chess program

2008-11-22 Thread Ingo Althöfer
Hello Don, thx for all your answers. I think, I found a website where old programs (from the 19_80s and early 90's) are listed: http://www.septober.de/chess/index.htm# There are also screenshots of RexChess http://www.septober.de/chess/pics/9102.gif and Colossus X (by Martin Bryant)

[computer-go] 1+23-h mode

2008-11-28 Thread Ingo Althöfer
Hello all, during my latest reading in the list I found, amongst others, the following mails: Don Dailey wrote: To summarize, I have found over the years that just plain CPU/MEMORY performance is the primary barrier not just to program strength, but development time. You must

[computer-go] WMSG - Scoring

2008-12-06 Thread Ingo Althöfer
Hello, in Deutsche Go-Zeitung, Issue 5/2008, I found a report by Robert Jasiek, on the World Mind Sports Olympiad, which took place in Beijing early in October (directly after the Computer Olympiad). Most interesting I found a paragraph describing the Go rules used in that event: area scoring,

[computer-go] Re: WMSG - Scoring

2008-12-06 Thread Ingo Althöfer
Michael Williams wrote: Seems like MC and MCTS programs would cope just fine after that one line of code is added. Ok, that is a technical answer. But ... ... what does the rule change mean for strengths of programs - especially in play against (strong) humans? Would this rule help the

[computer-go] Re: WMSG - Scoring

2008-12-06 Thread Ingo Althöfer
Michael Goetze wrote: I doubt that this rule has a significant effect on playing strength, either of computers or humans. After all, the average effect is about half a point per game, which you probably won't notice below the level of amateur 6d or 7d. You are right, and I did not state

[computer-go] Rumors on next Computer-Olympiad

2008-12-20 Thread Ingo Althöfer
Hello to all programmers, in computer chess circles there is an unconfirmed message that the next World Computer Chess Championships may take place May 11-18, 2009, somewhere in Europe. In another message by ICGA president David Levy it is written alongside with the championship the Computer

[computer-go] Nullmoves in MCTS and UCT?

2008-12-20 Thread Ingo Althöfer
Question: Have nullmove-concepts been tried or analysed in MCTS or UCT-settings? Background of the question: Using alpha-beta tree search, the (asymptotic) percentage of nullmove cutoffs may help as an indicator for the naturality or interestingness of a (newly invented) game. Unfortunately, it

[computer-go] Re: 3-4-5 rule

2008-12-31 Thread Ingo Althöfer
Hello Don, The reference bot of course does not build a tree, what I'm actually looking for is a way to produce a medium strength but really simple bot that does not build a tree and just has a lot of playout magic. You should have stressed very clearly much earlier in the thread that no

[computer-go] Re: 3-4-5 rule

2008-12-31 Thread Ingo Althöfer
I am sorry for my typos (with and ). Of course I meant: * among the distance 3-paths only those are allowed which do not have all three steps in the same direction: this rule would forbid only the four paths nnn, eee, sss, www. Ingo -- Sensationsangebot verlängert: GMX FreeDSL -

[computer-go] Happy new year ...

2009-01-02 Thread Ingo Althöfer
Many lifes, always enough memory space and lots of good Monte Carlo ideas ... that are some of my compgo-related wishes to all of you. Ingo. -- Pt! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger

[computer-go] Re: Black/White winning rates with random playout?

2009-01-08 Thread Ingo Althöfer
ibd asked: what's an usual winning rate for black/white from an empty 9x9 board, black playing first, 7.5 komi? I play 50k games when starting my program, and I usually get around 60% winning rate for white. This seems rather high to me, and I suspect a bug somewhere. Do you have any data

[computer-go] Re: GCP on ICGA Events 2009 in Pamplona

2009-01-10 Thread Ingo Althöfer
Hello Gian-Carlo, Gian-Carlo Pascutto wrote: The computer chess forums are ablaze with protests, because ... [But] the decision seems to have been cast in stone, with no amount of protest still being able to reverse it. I think, this is indeed the case. But at least YOU would have reason

[computer-go] Is computer Havannah welcome here?

2009-02-01 Thread Ingo Althöfer
Hello to all, in 1979, Christian Freeling (NL) published Havannah, a very nice abstract board game for two players. It is a connection game with some territory components. Havannah had (commercially) good years: it was in the shortlist for the (German) Game of the Year in 1981 and 1982 and was

[computer-go] Re: Taiwan Open 2009

2009-02-06 Thread Ingo Althöfer
Eric Dunham asked for information on that event. The website is http://go.nutn.edu.tw/2009/English/news_eng.php You should click on the key words in the left coloum. By the way: Good luck for the MoGo team! Ingo. -- Pt! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen:

[computer-go] Human Learning against MoGo

2009-02-15 Thread Ingo Althöfer
Hello, During the last week (February 10 - 13, 2009) there were several exhibition games between program MoGo and some professional go players from Taiwan (Jun-Xun Zhou 9p; Li-Chen Chien (12 years old) 1p; Shih Chin 2p). First of all congratulations tothe MoGo team for winning one game at

[computer-go] April 2009 KGS tournament

2009-03-31 Thread Ingo Althöfer
So far, only Yamato-san has registered for Nick Wedd's next KGS tournament (to be held on April 5). It would be a shame when Zen19 would remain the only (strong) participant. Come on, gentlemen: register your engines! Other question: Might it be possible to find a volunteer for operating Zen19

[computer-go] Re: April KGS bot tournament: results

2009-04-09 Thread Ingo Althöfer
Hello Nick, many thanks for your great engagement in these tournaments. Nick Wedd wrote: I am thinking that the next KGS bot tournament will be blitz - fast time limits, and probably small boards. Does anyone have any views? The next Computer Olympiad is in Pamplona, May 11-18. When you

[computer-go] Re: Analysis mode for human use

2009-04-21 Thread Ingo Althöfer
First of all sorry for forgetting the title in the previous posting. As David Fotland pointed out to me, sgf is of course not suited for humans to read. See the following example, for the first ten moves of a game. copied from sgf B[pp]; W[qd]; B[cp]; W[fq]; B[dq]; W[jp]; B[mq]; W[kq]; B[hp];

[computer-go] Reply to Lukasz and Don + Roadmap 2020

2009-04-21 Thread Ingo Althöfer
Topic is the question (how) to use (current) go programs for evaluating human go games. Lukasz wrote: I like the idea very much. But the coding effort is mostly in the GUI so it depends whether gogui's (or other GUIS's) author will like the idea. It has great commercial/popularity

[computer-go] Re: Analysis mode for human use

2009-04-23 Thread Ingo Althöfer
Don Dailey wrote: But odd move numbers always mean black to move. That becomes second nature very quickly and I personally prefer the less verbose syntax. Darren Cook wrote: I find the B/W very useful: when playing out a long list of moves it is very easy to lose track where I am. Most

[computer-go] Re: Fuego technical report

2009-05-04 Thread Ingo Althöfer
Hi Martin, thanks for the information and the report. In the abstract you write ...Fuego includes a Go engine with a playing strength that is competitive with the top programs in 9x9 Go, ... I want to support this claim. Over the weekend I had the fun to watch some free 9x9 games of Fuego on

[computer-go] Playing schedule in Pamplona?

2009-05-12 Thread Ingo Althöfer
Hello, can someone from the guys in Pamplona please let us know on which days and at which hours the games of the Olympiad are played? Which of those games can be followed on KGS? Thanks in advance, Ingo. -- Neu: GMX FreeDSL Komplettanschluss mit DSL 6.000 Flatrate + Telefonanschluss für nur

[computer-go] Re: Playing schedule in Pamplona?

2009-05-13 Thread Ingo Althöfer
See http://www.grappa.univ-lille3.fr/icga/event_info.php?id=35 Hideki Dear Hideki, thank you for the good information. Good luck for you and your bot! Ingo. -- Neu: GMX FreeDSL Komplettanschluss mit DSL 6.000 Flatrate + Telefonanschluss für nur 17,95 Euro/mtl.!*

[computer-go] Cross-Question on Pamplona

2009-05-17 Thread Ingo Althöfer
Hello, this is not Go, but I feel that some people here should know the answer: What are the results of the Connect6 competition in the Computer Olympiad. Thx in advance, Ingo. -- Neu: GMX FreeDSL Komplettanschluss mit DSL 6.000 Flatrate + Telefonanschluss für nur 17,95 Euro/mtl.!*

[computer-go] Re: Cross-Question on Pamplona

2009-05-17 Thread Ingo Althöfer
Dear Remi, What are the results of the Connect6 competition in the Computer Olympiad... I forwarded the question to organizers. I'll update the web site as soon as I have the results. Speed chess is also missing. Thanks for the results, they are online now. Also: congratulations to

[computer-go] Re: Reflections on a disaster

2009-05-21 Thread Ingo Althöfer
David Fotland wrote: The last moves in the PV are usually quite weak. They don’t get a lot of playouts. In principle I like long PVs, therefore (and of course because of its playing strength) Many Faces is my favorite Go program. Several of you may laugh at me/it, but with some training a

[computer-go] Re: Cross-Question on Pamplona

2009-05-21 Thread Ingo Althöfer
Martin Mueller wrote: In my view, Zen and CrazyStone are clearly the strongest 19x19 programs on equal PC-type hardware. This is what we saw on CGOS a few months ago. I also expected MoGo to still be a few hundred Elo ahead of Fuego on 19x19, but this is not how the two games in Pamplona

[computer-go] Match: MoGo vs Taranu on 9x9

2009-05-22 Thread Ingo Althöfer
Today an exhibition match of four games was played between program MoGo and European Champion Catalin Taranu (5p). On 9x9 board, with 30 min for each player. Games (with tons of comments from spectators) can be found in KGS archive, under http://www.gokgs.com/gameArchives.jsp?user=mogoRennes

[computer-go] Re: Match: MoGo vs Taranu on 9x9

2009-05-22 Thread Ingo Althöfer
Olivier Teytaud wrote: http://www.gokgs.com/gameArchives.jsp?user=mogoRennes ... in games 2 and 3 mogo lost quite late with some stupid very fast moves - this suggests that perhaps we should save up time in the beginning. Well, it's a conclusion based on a sample of 2 games :-) I think

[computer-go] Extended AMAF

2009-05-29 Thread Ingo Althöfer
Hello, maybe this is old stuff for the insiders. In my lecture today a clever student (Hagen Riedel) brought up the following idea to extend AMAF. He counts in four ways moves on a specific square: (1) How often did player A make this move in random games which he won? (2) How often did player A

[computer-go] Who is stv?

2009-05-31 Thread Ingo Althöfer
A program named stv has won the 9x9-KGS bot tournament today by a laaarge margin, ahead of Fuego, Zen9, Aya, Valkyria and Rango. More details under http://www.gokgs.com/tournEntrants.jsp?sort=sid=463 Does someone here know who stv's programmer is? Ingo. -- Nur bis 31.05.: GMX FreeDSL

[computer-go] Re: stv is Steenvreter

2009-05-31 Thread Ingo Althöfer
Nick Wedd explained: stv is Steenvreter. Its creator is indeed Erik van der Werf, whose KGS account is evdw. Its name is Dutch for stone eater... Congratulations to Erik van der Warf for the Win! By the way, Steenvreter is such a nice name. You should call your baby by full name on KGS.

[computer-go] Re: stv is Steenvreter

2009-06-01 Thread Ingo Althöfer
Hi Erik, By the way, Steenvreter is such a nice name. You should call your baby by full name on KGS. When I registered the kgs account for Steenvreter the name was too long, so I had to shorten it :-( I've update stv's profile to show Steenvreter under 'Real Name' Thanks. 10 letters seem

[computer-go] Re: The Shodan Go Bet

2009-06-01 Thread Ingo Althöfer
Darren Cook wrote: Back in 1997 I made a $1000 bet with John Tromp that he wouldn't be beaten my a computer before 2011. I've made a page to publicize the bet: http://dcook.org/gobet/ Interesting. Can you add John Trump's current/recent view on the bet to your site? Ingo. -- Nur bis

[computer-go] Passive Zen is 2-dan now

2009-06-03 Thread Ingo Althöfer
Zen19 has not been active on KGS since May 9. But it's rating is soaring. See at http://www.gokgs.com/graphPage.jsp?user=zen19 Just with the start of June 2009 Zen19 has crossed the barrier to 2-dan. Congratulations! Ingo. PS: How can a rating of an inactive player change? It changes because

[computer-go] Re: US Go Congress

2009-06-09 Thread Ingo Althöfer
Terry McIntyre wrote: I can volunteer to organize the computer versus pro demonstration. Myung-Wan Kim lives in Los Angeles and I can approach him; he played against Mogo last year. Will Mogo be available? Mogo team, do you feel that Mogo has improved since the previous demonstration?

[computer-go] Re: US Go Congress

2009-06-11 Thread Ingo Althöfer
Another 2 cents from me: what about inviting good old Bruce Wilcox for a show event against computer(s)? With him you would get all in one: * strong amateur * author of (old) go program * author of one of the best go books ever Ingo. -- GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!

[computer-go] Havannah - Go - LittleGolem

2009-06-21 Thread Ingo Althöfer
Hello, some time ago I had asked if discussions on computer Havannah were welcome here in the list. The reactions were positive, but (by different reasons) actors preferred not to use the opportunity. In the meantime a computer Havannah scene has developed on the game server

[computer-go] Re: Havannah - Go - LittleGolem

2009-06-22 Thread Ingo Althöfer
Hello Michael, Lukasz, Michael Williams wrote: Are the games archived? Does the public have access to those archives? Yes, they are. Everybody (with internet access) can see and replay the games. For instance, the games of Lukasz Lew can be found at

[computer-go] Re: Havannah - Go - LittleGolem

2009-06-22 Thread Ingo Althöfer
Hello Lukasz and Urban Łukasz Lew wrote: In Havannah, there are not many bots. And, in the meantime the programmers have marked their profiles accordingly. Profiles don't help. On LG you just click register and you are paired. I see your point. When you definitely want to avoid being

[computer-go] Dynamic komi in commercial programs

2009-07-11 Thread Ingo Althöfer
One of the difficult questions is if (or better how) dynamic komi can be used to improve the strength of MCTS go programs in handicap games (both cases being interesting: computer on strong side - and - computer on weak side). Especially, there are several normal go players (non-programmers) who

[computer-go] Re: Dynamic komi in commercial programs

2009-07-12 Thread Ingo Althöfer
Don Dailey wrote: I think we should open up to other ideas, not just dynamic komi modification. In fact that has not proved to be a very fruitful technique and I don't understand the fascination with it. I was not clear enough in the original posting. My main point is the following:

[computer-go] Re: Dynamic komi in commercial programs

2009-07-14 Thread Ingo Althöfer
Darren Cook wrote: Ingo's suggestion (of two buttons to increment/decrement komi by one point) was to make it easy for strong humans to test out the idea for us. Don Dailey wrote: There is no question that if you provide a button to push, all kinds of positions will appear where this idea

[computer-go] Re: Dynamic komi in commercial programs

2009-07-15 Thread Ingo Althöfer
thaoeuns at gmail.com wrote: So changing the komi doesn't actually improve your confidence interval. If (as Darren said) the win percentage is a crude estimate of the final score, then changing komi would do nothing to change the results one got (and at extremes biases it badly). Moving

[computer-go] Mirror Go against Zen

2009-07-20 Thread Ingo Althöfer
On KGS, some humans players (yakuman, finnes) now have started to play mirror go against Zen19 (Humans as Black; komi=+0.5). So far Zen19 seems to react helpless. In contrast, commercial versions of ManyFaces and Leela seem to have (almost) no problems with mirror go. Ingo. -- Jetzt kostenlos

[computer-go] Re: Mirror Go against Zen

2009-07-20 Thread Ingo Althöfer
Don Dailey wrote: I thought you played mirror go as white? Or with Black, starting in center. It is possible when komi is only 0.5 and chinese scoring. I'm not a go player, but it seems like it would be hard to win if you had the white pieces with 0.5 komi and black mirrored everything you

[computer-go] Many Faces Win against Mirror on 9x9

2009-07-20 Thread Ingo Althöfer
Included is the sgf of a win of Many Faces, when playing on 9x9 board with White, at komi 0.5, with opponent making mirror go all the time. Ingo. -- GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT! Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01 manyfaces-mirror-9x9.sgf

[computer-go] Really great cinema by Many Faces

2009-07-22 Thread Ingo Althöfer
David Fotland wrote in a related thread: Many Faces does not test for mirror go. But it is able to produce really great cinema against mirror go. Today I ran a test game with MF 12.013. Board size 13 Chinese Rules, but with komi=-45.5 (in words minus fourtyfive-dot-five). Many Faces as White

[computer-go] Re: Mirror Go against Zen

2009-07-23 Thread Ingo Althöfer
Don wrote: It could be a matter of style as you say, not a matter of strength. Right. My main questions is whether it's been established as true that Zen really plays poorly and Many Faces is brilliant against mirror go. Or does it just seem that way based on casual observation? Right.

[computer-go] Re: Mirror Go against Zen

2009-07-23 Thread Ingo Althöfer
Alain Baeckeroot wrote: gnugo --mirror will try to play mirror go :) How does it do this? Interesting might be a setting like the following: When gnu-mi (short for gnugo --mirror) has to make a move in a position, the following procedure is run: (a) Is the position a mirror position and is

[computer-go] Re: demo with pro at Go Congress in Fairfax

2009-07-25 Thread Ingo Althöfer
Terry wrote: I'm trying to set up a demo game between Myungwan Kim and Mogo at the Go Congress in Fairfax, VA Or, what do you think about the following idea: Make it a pair-go event with 2 strong humans versus 2 strong go programs (+ handicap). For the computer team, for instance the two best

[computer-go] Re: O Meien 9p vs Zen

2009-08-05 Thread Ingo Althöfer
Yamato San wrote: The match of O Meien 9p vs Zen will be held on next Monday via KGS. Schedule (JST) Date: August 10 Time: 14:10 Handicap 9x9: Zen is black, with 0.5 or 3.5 komi (?) 19x19: Zen is black, with 7 handicap stones. Thanks for the information. * How many games will be

[computer-go] Re: Myungwan Kim 8P versus Many Faces of Go

2009-08-06 Thread Ingo Althöfer
Terry McI announced: On Friday, August 8th, at 3 PM Eastern Daylight Time, Myungwan Kim 8P will play against Many Faces of Go. One question, do you mean Friday, August 7th, 2009 or Saturday, August 8th, 2009 or another year ;-) Thanks for informing us. Cheers, Ingo. -- Neu: GMX

[computer-go] O-Meien vs Zen

2009-08-10 Thread Ingo Althöfer
This morning the exhibition games between O Meien (9p) and Zen were played on KGS. On 19x19, at handicap 7, O Meien won by resignation. On 9x9, 3 games were played. In all of them Zen had Black. Two of the games were at komi 3.5 - and won by O Meien. One was at komi 2.5 - and won by Zen. sgf

[computer-go] Dynamic komi at high handicaps

2009-08-12 Thread Ingo Althöfer
In the last few weeks I have experimented a lot with dynamic komi in games with high handicap. Especially, I used the really nice commercial program Many Faces of Go (version 12.013) with its Monte Carlo level (about 2 kyu on 19x19 board) and its traditional 18-kyu level as the opponent. At

[computer-go] Human vs Computer in IEEE conference

2009-08-19 Thread Ingo Althöfer
Forthcoming human-vs-computer games in go: http://www.althofer.de/ieee-go-0.jpg http://www.althofer.de/ieee-go-1.jpg http://www.althofer.de/ieee-go-2.jpg http://www.althofer.de/ieee-go-3.jpg http://oase.nutn.edu.tw/FUZZ_IEEE_2009/result.htm Ingo. -- GRATIS für alle GMX-Mitglieder: Die maxdome

[computer-go] (no subject)

2009-08-19 Thread Ingo Althöfer
Jeff Nowakowski wrote: On Wed, Aug 19, 2009 at 07:27:00AM -0700, terry mcintyre wrote: Consider the game when computer is black, with 7 stones against a very strong human opponent. ... Didn't this game actually happen? Didn't MoGo *beat* a pro with 7 stones? It was long ago: in

[computer-go] Dynamic komi

2009-08-19 Thread Ingo Althöfer
Don wrote: But how do you create the required tension in a way that produces a program that plays the game better? At least in high handicap go on 19x19 (with the dynamic bot being the stronger player) it seems to work when the bot is kept in some 35-45 % corridor, as long as it is clearly

[computer-go] Exact dates for Chou vs Bots ?

2009-08-20 Thread Ingo Althöfer
Does someone here know the exact starting times (in common time zones) for the 19x19 exhibition games * Chou(9p) vs MFoG (Fr, August 21) * Chou(9p) vs Zen (Sa, August 22) ? Thx in advance. Ingo. PS: I will reply later to the interesting postings by Brian Sheppard and Weston Markham on

[computer-go] H7-moratorium ?

2009-08-22 Thread Ingo Althöfer
Yesterday and today there have been three exhibiton games of Chun-Hsun Chou (9p), on 19x19 board against three different bots (Zen, Many Faces of Go, Mogo). In all these games the bots got 7 handicap stones. Chou won all the games convincingly. Looking at Nick Wedd's table

[computer-go] Re: H7-moratiorium

2009-08-22 Thread Ingo Althöfer
Nick Wedd wrote: According to http://oase.nutn.edu.tw/FUZZ_IEEE_2009/result.htm Chun-Hsun Chou played only two 19x19 games, the one against Mogo was by Shen-Su Chang 6d. The website you cie does not mention all games played. Chou (adhoc) played one more game on 19x19 against MoGoBot1, at

[computer-go] Dynamic komi at high handicaps

2009-09-01 Thread Ingo Althöfer
After many (hand-operated) games with dynamic komi in high handicap situations I have - amongst other things - found the following for board size 19x19, when the side who has to catch up uses dynamic komi: (i) At handicap 7 the dynamic komi seems to give at least one additional level (one stone)

[computer-go] Re: KGS bot tournament

2009-09-20 Thread Ingo Althöfer
Olivier Teytaud wrote: I hope you did not consider us as a strong entrant; this is the first participation of our new bot and main parts change everyday (even this morning :-) ). Independently of you own view I consider MoGoBot to be a very interesting participant in the tournament. In my

[computer-go] Re: KGS bot tournament

2009-09-20 Thread Ingo Althöfer
In my eyes, besides MoGo, MFoG, and Zen only Fuego and Valkyria are missing from the top league. Olivier Teytaud wrote: There's CrazyStone at least, also. Yes, but that was a year ago or longer. Another story, concerning good old Leela: When I bought Leela 3.15 / 3.16 in October 2008, I took

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