Latest postings

The 20 most recent postings on Sensei's Library (not for the faint of heart :o)

 
107.210.159.110: Why is this not a private page? (2021-05-09 05:37) [#11648]

Bill: White's play on this page is not good. The author is entitled to present his ideas, but let's not inflict them on beginners as though they were authoritative. OK?

alexx: Lee Sedol - broken ladder game (2021-05-06 17:53) [#11647]

I think that the Lee Sedol - Hong Chang Sik - Broken Ladder Game should be added to the Famous Moves page.

Dieter: moved discussion (2021-04-14 14:52) [#11643]

Andy Pierce: John Power translating Shuko in Reducing Territorial Frameworks calls (B:) "The Knight's Move". I dislike "Knight" anything, because the term has no meaning without knowledge of chess, so I'd prefer a term containing keima. For the corner approach in (A:) specifically, 'keima kakari' seems appropriate enough. I wouldn't object to just using 'keima approach' for the general (anywhere on the board) concept like (B:).

Dave: Andy, since keima has no meaning without knowledge of the chess variant shogi, I don't really understand your objection. :-) In any case this page seems to define a redundant term. "Opposing keima" would only have meaning when we attempted to clarify verbally that the "keima" shape was in relation to one of our opponent's stones. How often is this additional clarification necessary? It will never be necessary when we are writing about a diagram, for example, since we can see the color of the two stones involved. If it IS necessary, what is the proposed alternative term that we will use to describe the case where the keima shape is in relation to one of our own stones?

Dieter: Hi Dave. The notion of opposing keima? first occurred in Minue's writings about Haengma, see Haengma tutorial for beginners. The term was specified in order to bring the fundamental relationship between keima and kosumi, to surface. If context says it all, there is no reason either to differentiate between a kosumi and an angle play, or a shoulder hit. Same for a one space jump and a capping play. Indeed, for playing Go or even analyzing, you need remarkably few words. For setting up a theoretical framework however, you need a lot of words. You can doubt the usefulness of such a framework, but that's a matter of viewpoint and taste. Cheers.

For the alternative term, keima does fine, since the chess analogy already provides the idea of sameness.

MrTenuki: But isn't Case B also a knight's move cap?

Bill: As far as I can tell, knight's move cap was coined by Charles Matthews, and does not appear in the go literature.

Dieter: Re: Too many obscure Japanese terms! (2021-03-30 11:42) [#11642]

You did great

PJTraill: Re: Too many obscure Japanese terms! (2021-03-29 22:07) [#11641]

I have just done more or less what you suggest, adding explanations to all concepts and principles (though most of them are not actually principles) and using a commonn English equivalent instead in some cases (leaving the Japanese in brackets). I see now, however, that there is a lot of redundancy between this page and Strategic Concepts, so I wonder if my effort was misdirected.

2603:900a:1508:e190: Too many obscure Japanese terms! (2021-03-28 17:04) [#11640]

I'll change this myself when I get a chance, but if anyone gets to it before me I won't complain!

Since this is an English language site, I think we should at least preview the English page title in all but the most commonly used Japanese words.

PJTraill: Re: Question on the lettered options after opening moves (2021-03-22 14:58) [#11639]

In the first diagram, the letters indicate plausible opening moves by Black, excluding symmetrically equivalent moves. These can be anywhere apart from the first and second line.

The remaining diagrams show for each plausible opening move by Black the usual answers by White. They are not Blacks second moves, which of course depend on what White does.

Note that in go it is normal to number individual moves rather than (as in Chess) pairs of moves; hence the second move of the game is Whites first move.

MoosTherin: Question on the lettered options after opening moves (2021-03-09 15:07) [#11634]

Hi All- newbie here. are the lettered options indicating follow-up moves that white would make, or the black would make as their second move. Thanks

Page: Slow · Topic: rewrite?
Dieter: rewrite? (2021-03-01 10:17) [#11631]

I'm inclined to rewrite this topic. Slow play is a concept that helps understanding some choices by AI, who tenuki more often in the opening than amateurs (pros ?) traditionally would.

However the examples provided here are not catalogued by AI as problematic in that sense.

Dieter: ((no subject)) (2021-02-24 23:15) [#11626]

Most of the joseki pages need an update but given the critical mass required I don't think this is realistic. But hey, it's a WIki.

bugcat: update for post-AI era? (2021-02-23 00:33) [#11625]

Does this page require an update to align with hypermodern understanding of the avalanche joseki in the light of research made with / by superhuman AI over the last few years or so?

I notice that it was last updated in 2010.

46.242.9.237: ((no subject)) (2021-02-20 21:52) [#11624]

I can't believe this is still not a feature. How could you call it a "database", if it doesn't support CRUD?

offmypack: Seven-point shapes (2021-02-10 01:06) [#11622]

This page says "All eye shapes of seven points are alive."

However, the Walkie-Talkie 7 is a seven point shape that becomes seki/depend on ko. This seems important to specify, since the butterfly seven specifies that it becomes Seki

[ext] https://senseis.xmp.net/?WalkieTalkieSeven

Page: Gomoku · Topic: Nigiri in Renju
207.255.68.115: Nigiri in Renju (2021-01-27 02:15) [#11619]

It appears nigiri is not done the same way in Renju as in Go:

[ext] http://renju.net/media/tourninfo.php?tournament_id=71

In Renju both players take a handful of stones. If the total of both players is even, they swap colors. If odd, they keep the color stones they have.

In an extended match, they nigiri after every pair of games.

2001:067c:2628:0647: meta context (2021-01-18 12:26) [#11617]

I would quite like to read this article. However I am reluctant to play on the G-docs side. Pity about the broken links.

Page: Front Page · Topic: 3D Alak (LO)
213.49.112.57: 3D Alak (LO) (2021-01-10 21:10) [#11613]

Good day,

I've made a 3D GO with Alak in the mind.

You can play it here. VS (stupid) ai, pass&play or bot match is currently possible.

After loading the game you'll find the rules in 'help'. It's in English and also in Dutch.

[ext] https://boardgamemulation.herokuapp.com/static/examples/LO/index_LO.html

Enjoy!

162.211.34.249: New article on Cerebras CS-1 potential for machine learning (2020-12-11 13:45) [#11612]

I would like to see an expert on machine learning start a new article on the new computer by Cerebras, called CS-1. This new computer is being used in other AI research, such as energy and drug research. In particular, does the Cerebras system have greater potential than Google's tensor processing units for machine learning? It would be interesting to see how long it would take for a Cerebras system to reach the same level as KataGo and LeelaZero. A single Cerebras system is touted as being 10,000 times stronger than a graphics processing unit. It can be clustered to be even stronger.

Page: Group · Topic: Chinese term
Malcolm: Chinese term (2020-12-07 15:41) [#11611]

The parent, Group page has this about the Chinese term:

The Chinese term, 块(塊)kui, is not a noun, but a measure word (aka classifier, counter), i.e. it acts as a unit in which a noun is counted. The noun used in this context is 棋 q, here meaning "stones. Measure words must be combined with a numeral, or a demonstrative pronoun, or both. E.g.: 一块棋 y kui q, "a group (of) stones, one group (of) stones", 这两块死棋 zh liǎng kui sǐ q, "these two dead groups". Primary meaning of kui is "a chunk of (something)", but also "a piece (e.g. of land)".

However 块 can also be a noun, meaning piece/lump/chunk. For instance "how many groups are there?" could be translated as "有几块儿?".

The discussion of measure words is correct but I'm not sure how relevant it is here.

So I think the above may well be slightly wrong/misleading. I have decided to remove it from the main page, for now.

Page: Go Board · Topic: Goban History
184.2.233.186: Goban History (2020-12-04 00:44) [#11610]

Anyone know of a site or books, etc. that covers the history of the goban?

2001:0861:3006:8bf0: ((no subject)) (2020-11-28 10:55) [#11606]

This section is mathematically a real mess. It is really very simple but so many variables are introduced OL1, OL2, OLw, OLb, Delta, Delta w, Fil, S, IL etc that it is hard to follow. I still dont know what is Delta w.


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