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.

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127 views

Is the black group dead in this game state? (From Nick Sibicky's lecture #246)

In Nick Sibicky's lecture #246, they state that the black group at T3 is dead: They exactly say that both have 4 liberties and it's White's move so Black is dead. But, after Black connects at S3 and ...
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58 views

Where can I find a database for 9x9 Go with times? [duplicate]

I am looking for a database of 9x9 Go games including the time spent on each move. I have found databases with everything I want except for the time per move.
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4answers
1k views

Why do player start with fighting for the corners in go?

I saw that in most go games the opponents started by placing chips 3 vertices away from the corners. Both players started fighting for the centre only after half of the game had passed. Is there any ...
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2answers
186 views

Go - How does one count territory in these scenarios?

I'm learning to play Go (Japanese rule) however I'm still confuse how to count territory in some cases. Which side each territory belongs to? Scenario 1 $$W Scenario1 $$ -------------------- $$ | . ....
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3answers
359 views

How many stones for small go boards?

I know the full-size game of Go is played on a 19x19 board and comes with 181 black stones and 180 white stones. This is to accommodate filling every spot on the board with a stone. I want to know if ...
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3answers
270 views

When should Beginners finish a Game of Go?

I was reading the answers to this question, about who has won a game of Go and came across the two following statements. You pass at the end of the game when you do not think you can increase your ...
4
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2answers
138 views

Advice on teaching Go to a kid

I am a 7k EGF. There is a 7 year old girl, that is a relative of my wife and lives next door. Once I managed to start her interest in Go by playing several Atari-Go games against her. I decided to ...
3
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3answers
322 views

Who won this match of Go?

Me and my girlfriend tried playing our first game of Go last night, but we're not sure we understood the rules so we can't determine who won this. Can you understand or maybe mark this so that we ...
4
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2answers
135 views

Two space approach moves in igo

In igo, when I plan dan-level players, they often make two-space approach moves like the one shown in the figure below: I have many of the standard books on go and they generally only discuss one ...
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1answer
232 views

Mysterious move

I'm watching a NHK cup match between Hane Naoki and Chang Hsu with japanese commenters so unfortunately I can't understand the explanations, and there is a move from black I can't understand (move 3 ...
4
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1answer
186 views

Is there a site to play Go online against a computer, in 2018? [duplicate]

Apparently there's an old question Is there a site to play Go online against a computer? already but that's in 2014. As we know AlphaGo/Master/Zero permanently changed the Go world, and many AI are ...
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2answers
127 views

In Go (board game) under Chinese rulings how does the scoring of empty territory work?

I am reading up on the Chinese rules of Go and have trouble understanding the ‘area scoring’ rules they use. I get that each player gets a point for each stone that is alive, for each empty field in ...
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126 views

Why choose tsuke-nobi after a double keima against hoshi?

I have been looking at §28 of 38 Basic Joseki, which deals with a double keima kakari against a stone on hoshi. I realise that this book is old and restricts itself somewhat, but I am taking it as a ...
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2answers
102 views

What is this alternate cut after 3-3 against double keima round hoshi?

In 38 Basic Joseki, Kosugi & Davies remark in this position: $$c $$ -------------------- $$ -. . . . . . . . . . $$ -. . . . . . . . . . $$ -. . 1 . . O . . . . $$ -. . . X . a . . . X $$ -. . . ...
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2answers
365 views

How to attack White’s corner in this beginner’s 9x9 game?

I'm playing as Black and wasn't able to prevent White from forming a solid area from here with the following sequence: $$Bc $$ --------------------- $$ - . . 6 . . . . . . - $$ - 8 0 . 2 5 . . . . - $...
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2answers
766 views

Go: How to count territory in this example?

I am very new to go and therefore I have some problems to count the territories. In the following example (13x13) in my point of view black wins. But I still have some questions: Does the black ...
3
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1answer
105 views

What joseki, if any, yields this position on page 60 of 38 Basic Joseki?

When introducing pincer joseki on page 60 of 38 Basic Joseki, Kiyoshi Kosugi and James Davies use this position as an illustration: $$Bc Illustration of pincer $$ --------- $$ ........- $$ .....O..- $...
3
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1answer
126 views

How would this seki be scored at the end of the game?

I'm a Go beginner with a VERY little bit of experience (three or four actual games under my belt), and I'm looking through the life and death problems at Sensei's Library trying to get a better ...
5
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1answer
179 views

Go: How is a “suicidal” move that captures enemy stones handled?

I am trying to get a better understanding of the basic rules of Go. Assume that black has surrounded a white group of stones which has exactly one eye (liberty) inside the group. What would happen if ...
4
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1answer
170 views

How does White survive in this corner?

This is from a game between two high-ranking professionals I saw on TV. Hopefully I copied it right. There doesn't quite seem to be enough from after W1. Let me show you [1]: $$Wc $$ . . . . . . . ...
6
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1answer
118 views

Having started a small avalanche, what does one do with an undefended cutting stone?

Having just looked at the small avalanche (nadare / konadare) in 38 Basic Joseki I tried it out as White in a 2-stone game against GNU Go and was surprised that it left out the move at a, immediately ...
4
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1answer
136 views

Is this double ko played reasonably by AlphaGo Zero and AlphaGo Lee?

In the 8th game of the series1 between AlphaGo Zero and AlphaGo Lee the following position with a double ko at {A,C}×{13,14} arises: On the next move AlphaGo Lee (Black) plays the double ko exchange ...
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1answer
157 views

Does qGo + GNU Go save or load handicap games incorrectly and how can one work around it [closed]

When I save a 2-stone handicap game with qGo 2.0.0 using GNU Go 3.9.1 as engine and then open it with the same software, the handicap stones are missing. This is quite annoying, as one has to imagine ...
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2answers
145 views

Has black’s moyo already given them an advantage

Playing white against the Linux programme kigo1, I (c. 6 kyu) reached the following situation, which seems typical of my games with it: (unfortunately one can only put 10 moves in a diagram, so I have ...
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2answers
178 views

Go Surrounding Rules

I'm a bit confused by the rules of surrounding. For example this board: $$ +------------------+ $$ |.......OX.........| $$ |.....XOOX.........| $$ |....XOOX..........| $$ |...,XOX..,....,...| $$ |.....
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1answer
90 views

How to analyse my own games?

I try to review my own games in order to improve (I am maybe 16-15k). For every move that I think is wrong, I try to find a better move. My question is: how do I know the move I find in analysis in ...
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2answers
165 views

Is this a correct formal heuristic for invalid moves due to Ko?

In the game of Go, there is the ko rule, which basically states that immediately recapturing a single stone is not a valid move. I am working on a Go computer program and am trying to implement the ...
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0answers
162 views

Is there a formal designation for “pure placement” games?

Specifically in the context of abstract or combinatorial games. As an example, Go and Reversi are both placement games. Although mathematically distinct (Reversi requires placement in the center at ...
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2answers
303 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 ...
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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?
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1answer
229 views

A Problem with Hidden Move Go

I have just learned about Hidden Move Go and I have a problem. Let us assume that one of our opponent’s hidden stones has only one liberty, i.e. it is in atari. But they don’t know that, because one ...
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287 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 ...
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1answer
151 views

Go game set with balls or spheres

Once in a documentary I saw an exquisite Go Set. The stones were not double or single convex, they were actually balls (round spherical stones). The board had carved channels or grooves, so as you put ...
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2answers
143 views

What is the meaning of this Joseki continuation?

In games against Leela with 7 handicap stones, Leela (white) plays the following variant of a well known joseki (knight move approach with one space pincer) $$W $$ ---------------------- $$ |............
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2answers
329 views

How much of AlphaGo's success is due to novelty?

One of the running themes in the commentary I've read on AlphaGo's games is that, from time to time, the AI would make a sound play that was nonetheless completely unfamiliar to its opponent (and to ...
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2answers
258 views

How do I effectively use a big wall?

This is from an OGS game I (white, 21k) played against a 20k, specifically my move 26. I'm not even sure about white 24, but I definitely think white 26 was a mistake (although it worked out, but only ...
10
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1answer
241 views

How does black kill white in this Tsumego?

I'm struggling with "Basic problem #46" from Tsumego Pro. It looks like this, black to play: $$ |-------------- $$ | . O O . . . . $$ | . . O X X . . $$ | . O O X . X . $$ | X X X O X . . $$ | . . . ...
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1answer
208 views

How come this solution to Tsumego is working?

From the application Tsumego Pro, I found this problem (on Today's daily): $$ ------------------ $$ . . . X . . X O . | $$ . . . O X . X O . | $$ . . . O O X X O . | $$ . . . . O O O X . | $$ . . . . ...
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847 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 ...
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5answers
525 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 ...
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1answer
410 views

What are some simple strategy games to play with a friend online? [closed]

I am looking for something we could play online and which is free. We had a lot of fun when we were just starting to play chess, and after a while it became a bit boring as there wasn't enough room ...
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2answers
205 views

Building a live group on a quarter board where two sides are already black

This exercise is kind of go club folklore: Given a quarter go board where two sides are already occupied by black (and unconditionally alive), white starts playing. White wins when she is able to ...
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1answer
167 views

Making sense of this app's territory resolution

In this "Go Free" Android app, I'm trying to make sense of the information it presents, in an effort to better understand the game. In the screenshot below: I'd be grateful for any assistance ...
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3answers
158 views

Corner enclosure after playing star point

As fas as I know the corner is fully closed after adding two more stones to 4-4 But what will happen if I simply play 3-3? Can I consider my corner closed or not?
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1answer
283 views

Overplay in orthodox fuseki - Leela AI fails miserably?

I'm not sure how much go is discussed on StackExchange, but currently I prefer trying it here than an actual go forum. This question concerns two topics: Recently the free go AI Leela has been ...
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3answers
236 views

Talking about Go: Using “he” and “she” for Black and White

It comes quite handy to assign different genders to the two abstract players "Black" and "White" and than use gendered personal pronouns in order to refer to them. But who should be male, and who ...
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939 views

Using the edges of the board in Go

So I have another question about counting territory. $$ --------------------- $$ | . . . . . O w w w | $$ | . . . . . O w w w | $$ | . . . . . . O O O | $$ | . . . . . . . . . | $$ | . . . . . . ...
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2answers
693 views

Territory inside of territory

I have a question about the ending/scoring of a Go game. Specifically regarding territory inside of territory. For example, in a position like this: $$ --------------------- $$ | . . . . . . O . . | $...
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1answer
166 views

Help me refind this 3d go variant - pieces can be stacked in a pyramid fashion

Quite a while back I stumbled upon a 3D variant of the game go. What I recall of the rules: designed to be playable without extra equipment beyond go board and stones played on a 9x9 grid stones can ...
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2answers
268 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 ...