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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0answers
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
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 ...
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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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?
3
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2answers
187 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 $$W Scenario1 $$ -------------------- $$ | . ....
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 ...
27
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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 ...
27
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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 ...
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5answers
716 views

How do I chose invasion or reduction points?

I have the following board: $$cm1 $$ +---------------------------------------+ $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . O . . . . . . . . . . | $$ | . . . . . . . O O . X . . ...
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3answers
364 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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4answers
721 views

What are good ways to learn to “read” a sequence of moves mentally?

What are good ways to learn to "read" a sequence of moves mentally (i.e. visualize it in one's mind), in Go? Is practicing on a goban useful, or is trying to stick to mentally imagining the moves ...
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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 ...
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6answers
3k 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 ...
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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 ...
6
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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 ...
26
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2answers
7k views

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

What are the differences? And do these differences influence strategy?
8
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4answers
32k views

Is there a site to play Go online against a computer?

There are many go servers but all of them seem to be for player-player games. I want to play online against a computer. I found some but it is not an actual go. I was not able to find a real go brain ...
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2answers
127 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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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
204 views

Examples of steady play in Go games?

I am looking for examples of professional Go games where one of the pros played solid, steady moves that were initially considered slow by the commentators, but eventually won him/her the game. My ...
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 ...
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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
128 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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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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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..- $...
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2answers
366 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
776 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 ...
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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 ...
3
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1answer
136 views

Mistake on Josekipedia after probe & invasion on keima shimari?

I have found a possible problem in this joseki, see josekipedia: http://www.josekipedia.com/#path:qdttocrdreqcpdpbrcrbsdobnbncmcndmbpcodsb They comment this white's move as "Makes life". But it ...
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3answers
421 views

Komoku-Oogeima joseki order variation

In a game my opponent deviated from the joseki line I was familiar with. $$W Actual game $$ ------------ $$ -........... $$ -.94........ $$ -.5128O..... $$ -..X36...0,. $$ -...7....... $$ -..............
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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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3answers
524 views

End game deciding on dead stones

In a game of Go, we were in a strange position. If my opponent moved at one point to put my pieces in atari, his pieces would get taken. If I moved at that same point my pieces would’ve been taken. ...
5
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1answer
221 views

How to evaluate this board situation under Japanese or European rules

In a game, the following board position remained after both parties passed: $$ ----------- $$ .XO.X.X.OX. $$ .XO.....OX. $$ .XOOOOOOOX. $$ .XXXXXXXXX. $$ ........... In the post game analysis it ...
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1answer
103 views

Tsumego elementary problem 633 - seki?

I'am trying to solve problem 633 of the elementary set (black's move): It seems to me that after black takes the outside liberty, it's a seki. Or is there a better solution?
4
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1answer
196 views

Counting a surrounded non-alive carpenter's square

I was playing against Crazy Stone and we ended up with (essentially) this corner situation: $$W $$ ------------- $$ | . . 5 X O . $$ | 4 1 3 X O . $$ | . 2 , X O . $$ | X X X X O . $$ | O O O O O . $$...
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 ...
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]: $$Wc $$ . . . . . . . ...
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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 ...
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2answers
266 views

Trick Joseki? Shoulder hit after keima to 3-4-stone

In a game I played, the following "Joseki" occurred: I played the low keima against the 3-4-point, and Black responded with a shoulder hit. This move is not in the book by Takao Shinji. In the game ...
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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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4answers
667 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 ...
9
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1answer
257 views

What's the longest possible forced repetition in Go?

Assume no superko rules so the game would end with no result. And both players are willing to play the shortest possible cycle as long as they don't give their opponent a chance to win. There are 4 ...
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2answers
203 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 ...
3
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1answer
87 views

Tsumego intermediate problem 11 - possible without winning ko two times?

This tsumego (intermediate problem 11) gave me hard time: I actually only found a solution where black must win the ko two times, which is nasty. Is there a better solution? It actually looks like "...
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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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2answers
228 views

Does playing a ko add a dimension to the game?

Playing a game of Baduk I was thinking that playing a Ko adds a dimension to the Tree of possibilities. Meaning it at least double the number of next moves the player may think of. Am I kind of right ...
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2answers
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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4answers
578 views

What happens in Go if you “take back” a ko before making a ko threat?

In Go, there is a potentially repetitive sequence of moves called a "ko." So if your opponent takes a ko from you, you have to make a move elsewhere on the board, called a ko threat, before "taking ...