An ancient strategy game for 2 players who try to outwit each other by placing stones on the board to simulate the capturing of territory.

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12
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3answers
633 views

Computer Go algorithms applied to other games?

Fairly recently, Computer Go programs became able to compete with humans using Monte-Carlo Search trees: A Monte Carlo (MC) go program plays random games and easily evaluates the terminal position ...
8
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5answers
595 views

Online Resources for Go Tutorials on specific topics

It is well-known that learning about Go is a never-ending process. This question is on resources that I believe to be useful in a certain stage of this learning process. In the very beginning, there ...
14
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3answers
712 views

Resources for learning about good shape?

Shape is immensely important in Go, and you can read about the basics anywhere - don't make empty triangles, table and mouth shapes are good, etc. Where can I find more advanced treatments of shape?
9
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4answers
1k views

Second line invasion of two-space extension

The two-space extension is a very common pattern and forms a base. I've found lots of material here, and here, and elsewhere on how it cannot be cut and how to defend against various invasions. ...
13
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3answers
824 views

How does the full-size board change the game of Go?

My Go board has two playing surfaces, one big and the other small. As a Go beginner, I have been playing on the reduced size board. I assume this is recommended because it makes games shorter, and ...
7
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2answers
344 views

How do I properly place handicap stones?

Handicap games are very common in Go. The weaker player, taking black, gets to place (usually) up to 9 stones on the board, depending on the difference in skill. Both free and fixed placement are ...
7
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1answer
512 views

Deviation of 3-3 invasion - how to live/kill?

I know the following is joseki for an approach of the 4-4 stone followed by a 3/3 invasion... $$cm1 A normal 3/3 invasion joseki (incomplete) $$ +---------------------------------------+ $$ | . . . . ...
5
votes
3answers
334 views

A reference of practical tsumego?

There are insanely many tsumego in existence, but many of them are very artificial and would never occur in real games. While any tsumego helps to improve, specifically learning shapes likely to be ...
11
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1answer
179 views

Where can I learn the lingo of Go?

I'm only a beginner at Go, but have been reading the questions in the go tag with interest. However, this game seems to have rather more special terminology than most. What do joseki, shimari, ...
4
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2answers
299 views

Komoku-Oogeima joseki order variation

In a game my opponent derived from the joseki line I was familiar with. $$W Actual game $$ ------------ $$ -........... $$ -.94........ $$ -.5128O..... $$ -..X36...0,. $$ -...7....... $$ -........... ...
4
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1answer
234 views

Chess (and variations) Endgame Complexity

My understanding is that the game of Go with Japanese Ko rules is, like most such games, EXPTIME-Complete, but that ladders are PSPACE-Complete and that Go endgames have been analyzed independently as ...
5
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4answers
373 views

Do professional-level Go players memorize a list of endgame positions as part of their training?

As in this question there were two questions, I extract the second question here.
4
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3answers
768 views

What is the meaning of 'karai' and how is it applied?

A Western insei recently wondered about the term "karai": Japanese players call black 57 "karai", which is a term which I haven't heard used in western go at all! The meaning appears to be ...
7
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2answers
420 views

In Go, Why are “High Point” Openings Seldom Seen in Modern Play?

I'm talking about opening with the "high point" of a "shimari, such as the 3-5 or 4-5 point. The disadvantage is that it allows the opponent to enter near the corner, such as the corresponding 3-4 ...
6
votes
1answer
107 views

What rules are used in international events

What rules are used during international events like the recent Samsung Cup?
10
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2answers
342 views

What is the best way to respond to this pincer joseki deviation?

Every now and again when I approach a corner, opponent plays 1-space pincer and I jump out, my opponent immediately peeps. This seems like aji keshi and bad shape, but I've been stumped as to how to ...
14
votes
2answers
190 views

Honinbo 1970, match 1: Why does white need to play toward the edge here?

People may remember this game from Strategtic Concepts of Go by Nagahara. $$ --------------------------------------- $$|. . . . . . . . . . . . . . . . . . .| $$|. . . 2 . . . . . . . . . . . . . . ...
3
votes
1answer
207 views

What is the Chinese-language equivalent of gobase (main resource for SGF files)?

I would find it hard to believe if someone tried to tell me that there was not such a website, and that people in China relied on gobase. Isn't there a Chinese-language resource for SGF files?
20
votes
1answer
759 views

What are the main results in game theory regarding Go?

What are the main mathematical results concerning Go? Go is a game with simple rules and big game complexity. It is inefficient to apply primitive chess AI methods (such as position brute force and ...
10
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7answers
569 views

Strategy for studying professional games?

I recently took A. Dinershtein's Go style test. It was useful to me, as the test is aimed at finding professional players who might think the way you do, for study purposes. It has definitely worked ...
23
votes
5answers
533 views

What is a good strategy for engaging children in playing go?

For children what is the youngest age that it makes sense to begin to teach them go? Is it best to start them on a 9x9 board? Will a child that has learned basic algebra be better suited to learn go ...
9
votes
4answers
157 views

Game from 1978: Why does this fuseki position favor black?

$$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . X . . . . | $$ | . . . , O . . . . ...
6
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2answers
139 views

Tsumego only solvable under NZ rules?

The most significant difference between the New Zealand rules and the other rules for Go is that suicide is not forbidden. In most cases, the only time this can come in handy is that you can suicide ...
8
votes
6answers
598 views

What is the formula of rank difference to handicap stones?

When the difference in rank is one stone the weaker player takes black and the komi is 0.5 for white (sometimes called "no komi" even though that's not technically correct). From then on add one ...
15
votes
2answers
526 views

Are professional ranks representative for how many stones of handicap players can give each other?

It was mentioned elsewhere that a 9p could not give 7 stones to a 2p. I have no databases available and wondered if this is correct. Bonus: If they aren't representative, why not? And is there a ...
8
votes
4answers
269 views

How to handle handicap as white?

I found it very difficult to handle handicap when my opponent is given 6 or more stones. I don't really like to force something complex when I know it could be severely punished. The good way to ...
15
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2answers
733 views

Why is this corner enclosure considered to be safe against 3-3 invasion?

I have read somewhere, but unfortunately forgot where that the following enclosure is safe against the invasion at a. $$ White invades at 'a' and supposedly dies. $$ --------- $$ -........ $$ ...
11
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7answers
304 views

At what level should one try to teach go?

I am now at a level where I don't consider myself to be a complete beginner, and I can now recognise at least some of the mistakes made by lower level kyu players. I would like to help other people ...
8
votes
4answers
115 views

How many points are won/lost during this exchange?

$$ six=two $$ -.a..... $$ -....... $$ -...OOOO $$ -4....XO $$ -1OOOOOX $$ -XOXXO.X $$ -2X5.XX. $$ -3...... $$ -------- White territory around a is safe. Move 2 and 4 can be swapped for identical ...
8
votes
3answers
525 views

Understanding influence and using it properly

I'm an amateur player, mostly-self taught with some help on KGS by a few awesome people. I think I now know my way around the board, and am not a complete plonker anymore, just a regular plonker :) ...
13
votes
4answers
334 views

Is there an equivalent of Deep Blue in the Go world?

Deep Blue was a chess-playing computer developed by IBM. On May 11, 1997, the machine won a six-game match by two wins to one with three draws against world champion Garry Kasparov. Kasparov accused ...
7
votes
2answers
207 views

How to protect a large piece of side territory

I've played several games where I have gained a good chunk of side territory, but lost it due to invasion by the other player. Below is an example, ignore the placement outside of the area black ...
16
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3answers
275 views

Why did black avoid the straightforward capture here?

The following position is from a 1998 China-Japan friendship match, described in Shuko's book The Only Move by Hinoki Press. $$Bcm31 Why B33? $$ --------------------------------------- $$ | . . . . . ...
13
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2answers
547 views

How far can you safely extend from your own wall?

When extending into what is basically open territory, how far can you extend to increase your influence/moyo, without inviting an invasion?
10
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4answers
420 views

Why are the boards not square?

I noticed gobans are not square, but rectangular. Why is that, and what is the correct orientation of the board when playing?
11
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2answers
320 views

Why are Chinese stones half-convex?

Unlike regular ishi that come in full-convex shape, Chinese stones are flat on one side. I found those stones difficult to work with, as they are not easy to pick up from the board. Granted, they lay ...
14
votes
3answers
624 views

How to play teaching game and give a useful review

I've reached a rank where I'd like to start and help weaker players improve their games. How can I make a review useful for the opponent? Should I go deep into variations Talk about theory? Should ...
10
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2answers
358 views

How do ranks work in Go?

One of the most commonly asked questions of beginners. How do ranks work in Go? Why do we start backwards? And why do we suddenly count upwards again? What is the difference between 9d and 9p? How is ...
5
votes
6answers
1k views

Where can I find a good Joseki database?

I've been wondering about certain positions that arise often. To help me understand them, I would like to study the joseki moves. Since printed joseki dictionaries are out-dated very fast, I'd prefer ...
5
votes
0answers
46 views

What is the difference between thickness and heavy or over-concentrated stones? [duplicate]

Possible Duplicate: What is the difference between thickness and heavy stones? Many beginners and even advanced players have difficulties telling apart thick from heavy or over-concentrated ...
9
votes
4answers
2k views

Is there a site to solve tsumego online?

I'd like to solve tsumego online, not having to install a program or app locally. Are there any sites that allow this? How about for smartphones?
6
votes
2answers
297 views

How can I create that sharp, intense sound when placing a stone?

No matter the material (board, stones) being used, pros are able to create a very sharp, loud, intense and beautiful sound when placing a stone (which immediately sits perfectly placed on its ...
16
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13answers
2k views

Where to play Go online? [closed]

I used to play regularly on KGS but have been inactive for several years. I am frustrated by the Catch-22 of the KGS system: in order to play rated games, you must have a solid rating. Solid ratings ...
18
votes
3answers
2k views

Is playing on a 9x9 board a solved problem?

I would think that on a 9x9 board, the number of possible moves is small enough that computers could exhaustively search all possible permutations and compute a line of play that always wins by moving ...
13
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3answers
468 views

Why are stones placed with index and middle finger?

I have read that stones should be picked out of the bowl and placed on the board by pinching them between the tips of the index and middle finger. This seems to be a long-standing tradition. Is this ...
12
votes
5answers
411 views

What is a good way to get used to counting points?

Being able to count is important - in the end, it's about the points. Does anyone have any tips to get used to counting during a game, little things that can speed it up or make it a little less ...
10
votes
4answers
984 views

Why is the 19x19 board so much more common than other sizes?

While there are probably some cultural reasons, are there any general reasons a 19x19 board may be preferred? Also, if, say, 21x21 was suddenly found to be in some way superior and a large number of ...
9
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2answers
572 views

Do we have Go endgame tablebases, just like Chess?

I am a relative newcomer to Go and more interested in the programming aspects of designing a Go Engine. Do Go engines use a systematic list of Endgame positions with known wins, the way chess ...
2
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4answers
927 views

Go, MahJong, and Chess. Together?

Do you think these games have enough in common to start a serious, competitive club focusing around them? There's definitely enough between Go and Chess, but what about MahJong? I know there is plenty ...
9
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2answers
1k views

What is this game that's similar to Go?

I always thought that Go was played by trying to place 5 of your pieces in a row while blocking your opponent from doing so, but I just recently looked up the rules, and it's completely different. Is ...