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[[File:Go-Equipment.jpg|frame|A game of Go in progress.]]
 
'''Go''' is a board game for two players, noted for being rich in strategic complexity despite its simple rules. It is known in Japan as 碁 or 囲碁 (''Go'' or ''Igo''), in China as 围棋 (''Weiqi''), and in Korea as 바둑 (''Baduk''). Go reached the West through Japan, which is why it is commonly known internationally by its Japanese name, and much of its technical vocabulary is Japanese.
 
The game is played by two players who alternately place circular black and white pieces called "stones" on the vacant intersections of a grid of 19×19 lines. Once placed on the board, stones cannot be moved elsewhere, unless they are surrounded and captured by the opponent's stones. The object of the game is to control a larger area of the board than the opponent.
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If you want a cursory animated introduction, try watching ''[[Hikaru no Go]]'', which may have inspired many to play Go. For much more information check either the [[Wikipedia|other wiki]] or visit [http://senseis.xmp.net/ Sensei's Library], a [[The Wiki Rule|wiki devoted to the game]].
 
Essays have been written about the differences between Go and [[Chess (Tabletop Game)|Chess]]. Note that a former world champion of chess stated that Go was so universal in its simple complexity that he wouldn't be surprised if there were extraterrestrials who knew Go.
 
Not to be confused with the 1999 film Doug Liman film ''[[Go (Filmfilm)|Go]]'', the short-lived early '80s [[Go (TV series)|television game-show]], the travel-themed family board-game published by Waddingtons, or the programming language developed by Google.
 
Sometimes used as the game of choice for the trope [[Smart People Play Chess]].
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{{tropelist}}
=== Go provides examples of a number of the tropes to which this wiki is dedicated: ===
 
* [[Artificial Stupidity]]: ThePlayed beststraight Go-playingto computer programs are roughly on a parbegin with, fairlybut strongaverted amateurs.by Reallythe strong professional players are still well beyond their reachmid-2010s.
** As of 2012, the best commercial Go-playing computer programs were roughly on a par with fairly strong amateurs. Really strong professional players were still well beyond their reach.
** The best computer programs can beat pros on the 9x9 board, and that size is slowly increasing.
*** However the computer used close to five times more time than the professional and only won one game out of three. The problem is that it gets exponentially harder as the board size increases. To the point where professionals still beat computers on 19x19 boards, even when the computer has a 9 stone handicap.
*** As of 2012, however, a computer has recently beaten a famous professional named Takemiya Masaki with only a 4-stone handicap, which seems to indicate an increase in the playing level of the best computer programs.
** In 2016, Google-designed AlphaGo achieved a 4-1 victory over one of the world's top players, Lee Sedol, eventually leading him to [[Rage Quit]] the game three years later.
*** One year after AlphaGo's victory, its successor AlphaGo Master achieved an unbroken 60 game winning streak against top players, then beat a team of five top players working in unison.
**** And then AlphaGo Zero learned the game from first principles and beat AlphaGo 100 games in a row.
** In 2022, [https://www.theregister.com/2022/03/18/china_go_player_ai/ a Chinese Go player was suspended for a year 'for using AI' in a tournament.] The article doesn't identify which AI the player used.
* [[Broken Base]]: Despite its antiquity, the rules of Go are mostly the same everywhere, but there ''are'' technical differences between the rules used in China, and those in Japan and Korea, mostly concerning the way the score is calculated, but also how a few very rare situations are handled.
* [[Crazy Prepared]]: Serious players study and memorise many sequences of best play, known as ''joseki''. Strong players can usually reel off entire games from memory.
* [[Flipping the Table]]: A traditional (if humorous) way to [[Rage Quit]] is known as the "nuclear tesuji," where the losing player flings the board at the wall, uppercuts the winner and storms out. (Troper General's Warning: Don't actually try this, it's not considered good sportsmanship anymore.)
* [[Idiosyncratic Episode Naming]]: Some famous games have exotic titles like "The Ear-Reddening Game", and probably most famous of all, "[[Exactly What It Says Onon the Tin|The Blood-Vomiting Game]]" (See [[Serious Business]] below).
* [[Kyu and Dan Ranks]]: Go players are ranked according to their playing strength. Complete beginners are ranked at roughly 30-35 ''kyu'' (30-35k), and as they improve, their rating ''reduces'', so a 10k player is stronger than a 15k player. This is because ''kyu'' ranks are based on the number of handicap stones players would need to win half their games against a First Dan player (See [[PVP-Balanced]] below), and the stronger player needs a smaller handicap. After winning promotion to First Kyu (1k), the highest ''kyu'' rank, the next step is Shodan or First Dan (1d), and ''dan'' ranks ''rise'' with greater strength from First to Ninth Dan, the highest amateur rank. Professional players have their own ranking system, rising from First (1p) to Ninth (9p) Dan. Go may have been the first game or sport to use the kyu/dan system.
* [[Metagame]]: Thousands of pages of analysis have been written over the centuries. The only game with a comparable literature is [[Chess (Tabletop Game)|Chess]].
* [[Play-By-Post Games]]: Nowadays internet Go servers, and e-mail, have largely replaced this. Playing Go on-line brings many [[Video Game]] tropes with it, including:
** [[Scrub]]: Some players feel entitled to assume that their way is the only legitimate way to play, and anything else is cheating. The particularly applies to the choice of Japanese vs. Chinese rules and scoring.
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** [[Rage Quit]]: Some players abandon losing games without resigning to avoid having the loss affect their rank on the server. This is known as "escaping", and the way in which "escapers" are handled by some Go servers is [[Flame War|controversial]].
** Also, a little trick for those bored in class: take a math notebook page, mark the borders of the board on the page’s square, take two pencils and erasers to mark the stones and score, pass the page between players, and voilà, classroom Go!
* [[Pronoun Trouble]]: When writing about Go (in the abstract rather than when referring to specific players), it is customary to refer to one player as "he" and the other as "she". Unfortunately some believe black should be male, and white female, while others appeal to ancient [[Useful Notes/Taoism|Taoist tradition]] and argue for the opposite.
* [[PVP-Balanced]]: Enormous attention is given to giving both players an even chance:
** Although each player has identical resources, black customarily plays first, which gives him an advantage. In a game between equally-strong players, white receives an scoring allowance called ''komi'' to compensate her for this. The exact size of ''komi'' is periodically adjusted based on exhaustive analysis of professional game statistics.
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** Pro games lasting up to sixteen hours over two days (they used to be much ''longer'').
** Unwritten but deeply-rooted conventions of proper behaviour and play, over which there is [[Flame War|much discussion]].
** As the board was being cleared after the legendary four-day "Blood-Vomiting Game" of 1835, the defeated player Akaboshi Intetsu, collapsed [[Exactly What It Says Onon the Tin|coughing up blood]], and died ("within a few months" though).
** In Ancient China, a Go game that ended badly ''started a war'': the Crown Prince of Han invited his cousin over to play. When he lost he [[Rage Quit|threw the goban at the cousin]], killing him (perfectly possible; a traditional goban can weigh as much as twenty kilos (forty pounds)). The cousin's grieving father [[Minor Injury Overreaction|declared war]] over the [[Sacred Hospitality|breach of hospitality]].
* [[Tournament Play]]: Professional tournaments are regarded as the highest form of the game by many players, and success in them is essential to the careers of pro players. Amateur national rankings are also based on performance in tournaments.
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[[Category:Useful Notes/China]]
[[Category:Go]]
[[Category:Tabletop GameGames]]
[[Category:Pages with working Wikipedia tabs]]
[[Category:Japanese Games]]
[[Category:Classic Tabletop Games]]