The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [go]

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. To add a board diagram to a post, see instructions in the tag-wiki.

Filter by
Sorted by
Tagged with
35
votes
7answers
2k views

What do you recommend to learn Go? [closed]

I am a beginner at this great game, and I would like to improve my skills at the game of Go. What resources would you recommend?
27
votes
1answer
2k 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 but high game complexity. It is inefficient to apply primitive chess AI methods (such as position brute force and ...
27
votes
5answers
2k 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 ...
25
votes
2answers
7k views

What are the difference between Chinese and Japanese rules in Go?

What are the differences? And do these differences influence strategy?
22
votes
3answers
6k 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 ...
19
votes
3answers
1k 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 I ...
19
votes
3answers
1k 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 ...
19
votes
5answers
665 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 ...
19
votes
2answers
904 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 ...
18
votes
13answers
3k 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
2answers
2k 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. $$ White invades at 'a' and supposedly dies. $$ --------- $$ -........ $$ -..........
18
votes
3answers
608 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. $$Bcm31 Why B33? $$ --------------------------------------- $$ | . . . . . ...
18
votes
3answers
1k 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?
17
votes
2answers
2k views

Where can I watch recorded Go games from Masters?

I think I can learn more if I see what people some kyu above me do. I'm aware of a related question, but I think, this one is more specific and might diverge.
15
votes
2answers
772 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?
15
votes
2answers
634 views

Three-space jump on third line: how to connect?

I've seen that in the diagram below, the two black stones can connect by attaching to the white stone, but I can't work out the sequence. How does black play to connect her stones? $$cm1 $$ . . . . ....
15
votes
2answers
288 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 . . . . . . . . . . . . . . .|...
14
votes
4answers
2k 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. ...
14
votes
3answers
2k 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 ...
14
votes
4answers
1k views

Is Go played for money?

Playing for money in this meaning would be single games played for some stake, not tournaments with a prize money. Backgammon has a large tradition to be played like, chess a smaller one (I think). I ...
13
votes
4answers
1k 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?
13
votes
4answers
3k 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 ...
13
votes
3answers
1k views

How do ranks work in amateur Go?

One of the most commonly asked questions of beginners. How do ranks work in Go for amateurs? Why do we start backwards? And why do we suddenly count upwards again? What is the difference between 9d ...
12
votes
6answers
3k views

Why are Elo ratings for go higher than for chess?

If we compare Elo(-like) ratings in chess and in go, we see that the highest ratings published for go (3621 for Ke Jie as of 2016-03-13 at goratings.org) are higher than those in chess (2851 for ...
12
votes
2answers
1k views

Why is this tsumego solution wrong?

I'm trying to understand why my solution to this tsumego is incorrect. It's "Basic problem #26" from Tsumego Pro and looks like this: $$ ---------------------------- $$ . . . . . . . . X . O X . . | $...
12
votes
3answers
801 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 (...
12
votes
5answers
1k 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 ...
12
votes
3answers
616 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 ...
12
votes
2answers
300 views

Has computer go impacted the discussion about komi?

Komi is the number of points added to White's score in Go in order to compensate for his going second. Some fifty years ago, it was 5 1/2 points; then playing experience showed that it was ...
11
votes
2answers
3k views

In this Go position, can black capture the entire length of the white arm?

In the position below, can black capture the entire length of the white arm with a combination starting with placing a black stone on A?
11
votes
7answers
380 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 ...
11
votes
5answers
524 views

Do Go players play to minimize score difference after realizing they cannot win?

I would expect that players might opt for a strategy with a higher chance of winning despite having a greater chance of losing by a greater point difference. But after they see that they will lose, do ...
11
votes
2answers
494 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 ...
11
votes
3answers
938 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 ...
11
votes
7answers
880 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 ...
11
votes
4answers
660 views

How to handle handicap as white?

I found it very difficult to handle the 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 right way to ...
11
votes
4answers
966 views

Why do all Go board sizes have an odd number of lines? Why is a 19x19 board so much better than a 20x20 board?

Here are the number of games played on every different board sizes on DGS (Dragon Go Server): | Size | CNT | +------+--------+ | 5 | 2464 | | 6 | 466 | | 7 | 11015 | | 8 | 434 ...
11
votes
4answers
4k 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?
11
votes
5answers
1k views

What is the difference between thickness and heavy stones?

Thickness in Go describes a strong formation of stones. A heavy group is one that's over-concentrated. How do I know when my stones are thick, without going too far and becoming heavy? It seems ...
11
votes
4answers
981 views

Corner variation which is not in Josekipedia

$$Bcm1 $$ ------------------- $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . a 0 4 8 . | $$ . . . . . 1 5 6 . | $$ . . . . . . 9 7 . | $$ . . . . . . 2 . . | $$ . . . . . . . . . | $$ . . . ....
11
votes
1answer
248 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, high-...
11
votes
2answers
266 views

Are there any legal go arrangements that can never occur in an actual game?

Are there any arrangements of stones that are: legal, because all groups have at least one liberty, yet impossible, because no sequence of moves could possibly result in such an arrangement. I'm ...
11
votes
2answers
286 views

Why do asymmetric ko fights exist?

When I play teaching games with much stronger go players, situations often come up where one side must win a ko fight in order to survive. In these situations, my opponent will explain to me that ...
11
votes
2answers
807 views

What is “looking for a place to resign” in go?

In a number of commentaries on professional games I have read that one of the players was “looking for a place to resign”. My impression was that this meant that they considered the game lost, and ...
10
votes
4answers
5k views

What is a good opening for Go on a 13x13 board?

I have been playing a lot of Go recently at lunch but we are playing on a 13x13 board instead of a 19x19. I can't seem to ever win! I am beginning to think that my opening is leaving me in a bad ...
10
votes
3answers
1k 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 :) ...
10
votes
2answers
336 views

Is one allowed to play Go with a notebook?

This may be a silly question—but, is it illegal for one to enter a Go (or Chess, for that matter) tournament with a notebook in hand?
10
votes
4answers
212 views

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

$$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . X . . . . | $$ | . . . , O . . . . ...
10
votes
6answers
2k 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 ...
10
votes
2answers
545 views

Why is this move considered bad?

I'm trying to play against simple online bot cosmi.net. I started playing about two days ago, so I'm a complete beginner, and even the easiest version on 9x9 board is really hard for me to beat. This ...