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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Oiling fake Yunzi stones [on hold]

I bought some "yunzi" stones that came in straw bowls, but they aren't translucent at all. They are fully opaque. Considering the price paid (around 35 dollars, I bought it in Brazil), I think that ...
3
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1answer
281 views

How to run strong Go (baduk) playing program locally?

There are some strong bot-players on KGS (from 4d to 2K). I saw pachi, ayamc and even gnugo having dan ranks on KGS. I wonder how to run such a strong bots offline. I tried gnugo and aya, both ...
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58 views

Are there any single-screen human-vs-human go clients/programs available?

This is a question about Go software, so it might not be the correct place to ask this, but I expect it to be the best place. ;) I want to give a group of people a quick overview on Go but I don't ...
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4answers
152 views

How/where can I get comments from strong players on my gameplay?

I'd like to get advice from strong go players - let's say amateur 6D+ or pros. What are my options for getting that advice? I am not necessarily looking for full game reviews, rather comments on one ...
8
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1answer
148 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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1answer
376 views

How does AlphaGo calculate?

Anyone knows the algorithm of AlphaGo? I heard that it's related to neural networks. But don't know the details? So it does not find the solution to win in a deterministic way, right? I think so, ...
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1answer
88 views

Is this a correct way to count territory in Go (by Chinese rules)?

I am not sure if I misunderstood the territory counting rules of Go or simply I ran into a software bug. One of the Go programs I use counts territories like this. Would you explain me please why B6, ...
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0answers
104 views

How can I “censor” players on the IGS server?

How can censor players on the Internet Go Server (IGS)? It says in the help you can block players from matches by "censoring" them, but there is no "censor" command.
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5answers
411 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 ...
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2answers
412 views

Can black win in this Go situation?

Can black win here with or without this move? Or is in every way dead?
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3answers
264 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. ...
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333 views

How do I chose invasion or reduction points?

I have the following board: $$cm1 $$ +---------------------------------------+ $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . O . . . . . . . . . . | $$ | . . . . . . . O O . X . . ...
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2answers
456 views

Recording Go games and importing into software

In chess, algebraic notation is the standard for recording games and Portable Game Notation (PGN) is a format for importing games (notation plus metadata) into chess software or even forums. The Go ...
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1answer
123 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 . ...
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2answers
949 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 . . | ...
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2answers
175 views

Ranking of Go Software

Where could I find information about the level of Go playing software? In particular, I am looking for commercial software. Ideally, I'd like to find a live ranking, as obviously this field is ...
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5answers
562 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 ...
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2answers
566 views

By how many points did alphago win against Lee Se-dol?

Today, the computer program AlphaGo from Google won against the Go world champion Lee Sedol. I read that it won by resignation. If I understand correctly, it means that Lee realized he could not win ...
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3answers
302 views

Does a Go variant on an infinite board exist?

I've just read the paper Better Computer Go Player with Neural Network and Long-term Prediction which seems to make a big step in direction of getting a better algorithm playing Go than any human. ...
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3answers
1k views

What is the actual world ranking of Fan Hui

I've read somewhere that Fan Hui was ranked between 600th and 700th world Baduk player. Knowing he's 2P whereas some players are up to 9P, it seems reasonable to me. Is there any official and ...
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3answers
532 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 ...
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3answers
740 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 ...
3
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2answers
219 views

How to count non fully walled territory?

I just started to learn Go. I still have some problems to properly understand how to count territory when the game has finished (by both players passing). For example, if the game ends in the ...
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3answers
200 views

Small go board history

Does anyone know origin of smaller go boards (9*9,13*13)? When (and where) was first introduced? I looked on Sensei library but didn't find anything about history of go boards.
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1answer
154 views

In go, is it possible to guess the opponent's strength?

Context : while playing against a complete stranger that hide its rank/level. I feel like it would be possible to guess the opponent's strength by analyzing its responses to tesujis, probes, etc. ...
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4answers
360 views

Magic Sword: Peaceful Variation or is Punishment Possible?

In a game earlier today I encountered a deviation from the Magic Sword pattern that I haven't been able to find anywhere. Instead of cutting, White seemed to offer a peaceful trade of influence for ...
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4answers
9k 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
254 views

Questions about memorizing go games

1) How do you get better at this? Is it just memorizing pro games or does it just come with time? 2) Does it actually improve your game or is it just sort of nice to have. 3) At what point should I ...
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1answer
79 views

Can having a short break help improve at Go? [closed]

I'd like to know if taking a little break can be a good idea in go. I've read several threads saying that people became stronger after a short break. Can it be true ? Is there some subconscious ...
3
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1answer
120 views

Are shell and slate go stones fragile?

I'm looking to buy a set of fine (but not luxurious) go equipment (board, stones, and bowls). I have a cheap set of glass stones with a blue plastic sheet "board". Unfortunately my home's floor is ...
11
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4answers
572 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 ...
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2answers
264 views

Playing against underestimated player damages my rank at KGS

At GoKGS.com, I (13 kyu) was playing against player ranked as "13k?", and I lost and dropped to 14 kyu. But then we found out (thanks to another user watching the match) that the user is actually much ...
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3answers
356 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,. $$ -...7....... $$ -........... ...
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3answers
321 views

4-4 pincer variant - not in joseki dictionary

I am 4K and played against 2K in handicap game (2-stones). The point of B3 was to prevent a double-wing shape for white (along the right and bottom) So W4 pincer leads us into this joseki variant. ...
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5answers
424 views

How does one set up a 1/4 board for Go – and is it a good way to start?

As a beginner, I was handed a full go board. And, somehow figured it out. A beginner friend wants to start "small" on something like 1/4 of the board. Personally, I think that we should start with ...
18
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3answers
841 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 ...
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4answers
310 views

Why is this NOT joseki?

Why is white 4 in this diagram not joseki? How can it be punished by black and how bad is it compared to standard joseki play? $$ ---------- $$ ..........| $$ ..........| $$ ..3.2.....| $$ ...
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307 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 ...
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3answers
468 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 ...
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4answers
211 views

4-4 high approach - why is the defensive approach prefered?

In the 4-4 high approach joseki, why would black ever want to play the defensive - left variant? The result of the right variant looks much better! While the left variant leaves monkey jump ...
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3answers
949 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 ...
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3answers
379 views

Is studying tactics for Go useless?

There are plenty of chess tactics trainers online, to improve your chess skills, but I cannot find a single one for go. Is studying tactics useless for go?
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372 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 ...
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2answers
156 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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2answers
160 views

3-3 invasion into 4-4,6-4

In josekipedia, they state that this exchange is a mistake See http://www.josekipedia.com/#path:pdttpfqcpcqdqepbobrbpaqaqb for the full sequence they argue with. But, I think that their argument ...
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2answers
145 views

Does the 3-3 invasion work with 3 stones already placed?

With the three black stones placed, I did the 3-3 invasion. $$Wm1 $$ ---------- $$ ........| $$ ...X....| $$ ...X.1..| $$ ....X...| $$ ........| I tried tried to force a KO and did get 2 moves ...
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1answer
73 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?
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209 views

Annotated 9x9 Go Games

I've recently started playing Go and I would like to study some annotated 9x9 games, but can't seem to find anything. Does anyone know where I could find such games? If it's free that would be even ...
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2answers
313 views

Practicing Go for a beginner

I am looking to learn Go. I learned the rules a few years back, but there is a mindset that the game rewards. I want to try to capture that mindset. I have read many Go books, but they are static. ...
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2answers
279 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?