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Go Board Game Description VideoStudying Professional Go Games - Legend88 - 01
It is therefore possible to allow a tactical loss when it confers a strategic advantage. Novices often start by randomly placing stones on the board, as if it were a game of chance.
An understanding of how stones connect for greater power develops, and then a few basic common opening sequences may be understood. Learning the ways of life and death helps in a fundamental way to develop one's strategic understanding of weak groups.
The strategy involved can become very abstract and complex. High-level players spend years improving their understanding of strategy, and a novice may play many hundreds of games against opponents before being able to win regularly.
In the opening of the game, players usually play and gain territory in the corners of the board first, as the presence of two edges makes it easier for them to surround territory and establish their stones.
Players tend to play on or near the star point during the opening. Playing nearer to the edge does not produce enough territory to be efficient, and playing further from the edge does not safely secure the territory.
In the opening, players often play established sequences called joseki , which are locally balanced exchanges;  however, the joseki chosen should also produce a satisfactory result on a global scale.
It is generally advisable to keep a balance between territory and influence. Which of these gets precedence is often a matter of individual taste.
The middle phase of the game is the most combative, and usually lasts for more than moves. During the middlegame, the players invade each other's territories, and attack formations that lack the necessary two eyes for viability.
Such groups may be saved or sacrificed for something more significant on the board. However, matters may be more complex yet, with major trade-offs, apparently dead groups reviving, and skillful play to attack in such a way as to construct territories rather than kill.
The end of the middlegame and transition to the endgame is marked by a few features. Near the end of a game, play becomes divided into localized fights that do not affect each other,  with the exception of ko fights, where before the central area of the board related to all parts of it.
No large weak groups are still in serious danger. Moves can reasonably be attributed some definite value, such as 20 points or fewer, rather than simply being necessary to compete.
Both players set limited objectives in their plans, in making or destroying territory, capturing or saving stones.
These changing aspects of the game usually occur at much the same time, for strong players. In brief, the middlegame switches into the endgame when the concepts of strategy and influence need reassessment in terms of concrete final results on the board.
In China, Go was considered one of the four cultivated arts of the Chinese scholar gentleman , along with calligraphy , painting and playing the musical instrument guqin  In ancient times the rules of go were passed on verbally, rather than being written down.
Go was introduced to Korea sometime between the 5th and 7th centuries CE, and was popular among the higher classes.
Sunjang baduk became the main variant played in Korea until the end of the 19th century, when the current version was reintroduced from Japan.
It became popular at the Japanese imperial court in the 8th century,  and among the general public by the 13th century. In , Tokugawa Ieyasu re-established Japan's unified national government.
Despite its widespread popularity in East Asia, Go has been slow to spread to the rest of the world. Although there are some mentions of the game in western literature from the 16th century forward, Go did not start to become popular in the West until the end of the 19th century, when German scientist Oskar Korschelt wrote a treatise on the ancient Han Chinese game.
In , Edward Lasker learned the game while in Berlin. Two years later, in , the German Go Association was founded. World War II put a stop to most Go activity, since it was a game coming from Japan, but after the war, Go continued to spread.
Both astronauts were awarded honorary dan ranks by the Nihon Ki-in. In Go, rank indicates a player's skill in the game. Traditionally, ranks are measured using kyu and dan grades,  a system also adopted by many martial arts.
More recently, mathematical rating systems similar to the Elo rating system have been introduced.
Dan grades abbreviated d are considered master grades, and increase from 1st dan to 7th dan. First dan equals a black belt in eastern martial arts using this system.
The difference among each amateur rank is one handicap stone. For example, if a 5k plays a game with a 1k, the 5k would need a handicap of four stones to even the odds.
Top-level amateur players sometimes defeat professionals in tournament play. These ranks are separate from amateur ranks.
Tournament and match rules deal with factors that may influence the game but are not part of the actual rules of play. Such rules may differ between events.
Rules that influence the game include: the setting of compensation points komi , handicap, and time control parameters.
Rules that do not generally influence the game are: the tournament system, pairing strategies, and placement criteria. Common tournament systems used in Go include the McMahon system ,  Swiss system , league systems and the knockout system.
Tournaments may combine multiple systems; many professional Go tournaments use a combination of the league and knockout systems.
A game of Go may be timed using a game clock. Formal time controls were introduced into the professional game during the s and were controversial.
Go tournaments use a number of different time control systems. All common systems envisage a single main period of time for each player for the game, but they vary on the protocols for continuation in overtime after a player has finished that time allowance.
The top professional Go matches have timekeepers so that the players do not have to press their own clocks. Two widely used variants of the byoyomi system are: .
Go games are recorded with a simple coordinate system. This is comparable to algebraic chess notation , except that Go stones do not move and thus require only one coordinate per turn.
Coordinate systems include purely numerical point , hybrid K3 , and purely alphabetical. The Japanese word kifu is sometimes used to refer to a game record.
In Unicode, Go stones can be represented with black and white circles from the block Geometric Shapes :. The block Miscellaneous Symbols includes "Go markers"  that were likely meant for mathematical research of Go:  .
A Go professional is a professional player of the game of Go. Although the game was developed in China, the establishment of the Four Go houses by Tokugawa Ieyasu at the start of the 17th century shifted the focus of the Go world to Japan.
State sponsorship, allowing players to dedicate themselves full-time to study of the game, and fierce competition between individual houses resulted in a significant increase in the level of play.
During this period, the best player of his generation was given the prestigious title Meijin master and the post of Godokoro minister of Go.
Of special note are the players who were dubbed Kisei Go Sage. After the end of the Tokugawa shogunate and the Meiji Restoration period, the Go houses slowly disappeared, and in , the Nihon Ki-in Japanese Go Association was formed.
Top players from this period often played newspaper-sponsored matches of 2—10 games. For much of the 20th century, Go continued to be dominated by players trained in Japan.
After his return to Korea, the Hanguk Kiwon Korea Baduk Association was formed and caused the level of play in South Korea to rise significantly in the second half of the 20th century.
With the advent of major international titles from onward, it became possible to compare the level of players from different countries more accurately.
His disciple Lee Chang-ho was the dominant player in international Go competitions for more than a decade spanning much of s and early s; he is also credited with groundbreaking works on the endgame.
As of [update] , Japan lags behind in the international Go scene. Historically, more men than women have played Go. Special tournaments for women exist, but until recently, men and women did not compete together at the highest levels; however, the creation of new, open tournaments and the rise of strong female players, most notably Rui Naiwei , have in recent years highlighted the strength and competitiveness of emerging female players.
The level in other countries has traditionally been much lower, except for some players who had preparatory professional training in East Asia.
A famous player of the s was Edward Lasker. In , Manfred Wimmer became the first Westerner to receive a professional player's certificate from an East Asian professional Go association.
It is possible to play Go with a simple paper board and coins, plastic tokens, or white beans and coffee beans for the stones; or even by drawing the stones on the board and erasing them when captured.
More popular midrange equipment includes cardstock, a laminated particle board , or wood boards with stones of plastic or glass.
More expensive traditional materials are still used by many players. The most expensive Go sets have black stones carved from slate and white stones carved from translucent white shells, played on boards carved in a single piece from the trunk of a tree.
Chinese boards are slightly larger, as a traditional Chinese Go stone is slightly larger to match. The board is not square; there is a ratio in length to width, because with a perfectly square board, from the player's viewing angle the perspective creates a foreshortening of the board.
The added length compensates for this. More recently, the related California Torreya Torreya californica has been prized for its light color and pale rings as well as its reduced expense and more readily available stock.
The natural resources of Japan have been unable to keep up with the enormous demand for the slow-growing Kaya trees; both T. Other, less expensive woods often used to make quality table boards in both Chinese and Japanese dimensions include Hiba Thujopsis dolabrata , Katsura Cercidiphyllum japonicum , Kauri Agathis , and Shin Kaya various varieties of spruce , commonly from Alaska, Siberia and China's Yunnan Province.
However it may happen, especially in beginners' games, that many back-and-forth captures empty the bowls before the end of the game: in that case an exchange of prisoners allows the game to continue.
Traditional Japanese stones are double-convex, and made of clamshell white and slate black. In China, the game is traditionally played with single-convex stones  made of a composite called Yunzi.
The material comes from Yunnan Province and is made by sintering a proprietary and trade-secret mixture of mineral compounds derived from the local stone.
This process dates to the Tang Dynasty and, after the knowledge was lost in the s during the Chinese Civil War , was rediscovered in the s by the now state-run Yunzi company.
The term yunzi can also refer to a single-convex stone made of any material; however, most English-language Go suppliers specify Yunzi as a material and single-convex as a shape to avoid confusion, as stones made of Yunzi are also available in double-convex while synthetic stones can be either shape.
Traditional stones are made so that black stones are slightly larger in diameter than white; this is to compensate for the optical illusion created by contrasting colors that would make equal-sized white stones appear larger on the board than black stones.
The bowls for the stones are shaped like a flattened sphere with a level underside. Chinese bowls are slightly larger, and a little more rounded, a style known generally as Go Seigen ; Japanese Kitani bowls tend to have a shape closer to that of the bowl of a snifter glass, such as for brandy.
The bowls are usually made of turned wood. Mulberry is the traditional material for Japanese bowls, but is very expensive; wood from the Chinese jujube date tree, which has a lighter color it is often stained and slightly more visible grain pattern, is a common substitute for rosewood, and traditional for Go Seigen-style bowls.
Other traditional materials used for making Chinese bowls include lacquered wood, ceramics , stone and woven straw or rattan. The names of the bowl shapes, Go Seigen and Kitani , were introduced in the last quarter of the 20th century by the professional player Janice Kim as homage to two 20th-century professional Go players by the same names, of Chinese and Japanese nationality, respectively, who are referred to as the "Fathers of modern Go".
The traditional way to place a Go stone is to first take one from the bowl, gripping it between the index and middle fingers, with the middle finger on top, and then placing it directly on the desired intersection.
It is considered respectful towards White for Black to place the first stone of the game in the upper right-hand corner. It is considered poor manners to run one's fingers through one's bowl of unplayed stones, as the sound, however soothing to the player doing this, can be disturbing to one's opponent.
Similarly, clacking a stone against another stone, the board, or the table or floor is also discouraged. However, it is permissible to emphasize select moves by striking the board more firmly than normal, thus producing a sharp clack.
Additionally, hovering one's arm over the board usually when deciding where to play is also considered rude as it obstructs the opponent's view of the board.
Apart from the points above it also points to the need to remain calm and honorable, in maintaining posture, and knowing the key specialised terms, such as titles of common formations.
Generally speaking, much attention is paid to the etiquette of playing, as much as to winning or actual game technique. In combinatorial game theory terms, Go is a zero-sum , perfect-information , partisan , deterministic strategy game , putting it in the same class as chess, draughts checkers , and Reversi Othello ; however it differs from these in its game play.
Although the rules are simple, the practical strategy is complex. The game emphasizes the importance of balance on multiple levels and has internal tensions.
To secure an area of the board, it is good to play moves close together; however, to cover the largest area, one needs to spread out, perhaps leaving weaknesses that can be exploited.
Playing too low close to the edge secures insufficient territory and influence, yet playing too high far from the edge allows the opponent to invade.
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Two examples of such solidly connected strings of stones are shown in Diagram 5. It is important to remember that only stones which are horizontally or vertically adjacent are solidly connected; diagonals do not count as connections.
Thus, for example, the two marked black stones in the top left of Diagram 5 are two separate strings, not a single one.
Several strings close together, which belong to the same player, are often described as a group. So these two strings form a group. As far as capturing is concerned, a string of stones is treated as a single unit.
As with isolated stones, a string is captured when all of its liberties are occupied by enemy stones. In Diagram 6 the strings of Diagram 5 have both been reduced to just one liberty.
Note that the black string in the top right is not yet captured because of the internal liberty at f. The two stones at the top left of Diagram 6 can each be captured independently at g or h.
In Diagram 7 we see the position which would result if Black captured at e and White captured at f and at g.
The remaining black stone could be captured at h. As with the capture of a single stone, the points formerly occupied by the black string have become white territory, and vice versa.
Diagrams 8 and 9 illustrate the rule governing self-capture. In Diagram 8 , White may not play at i or j , since either of these plays would be self-capture; the stones would then have no liberties.
However, if the outside liberties have been filled, as shown in Diagram 9 , then the plays at i and j become legal; they fill the last black liberty in each case, and result in the black stones being captured and removed from the board as White's prisoners.
In Diagram 9 , White was able to play at i and j because these plays result in the capture of the adjacent black stones. Since White's plays capture some stones, they do not count as self-capture.
A different situation is shown in Diagram The black string here could only be captured if White were able to play at both m and n. Since the first of these plays would be self-capture, there is no way that White can carry out the capture.
These two separate spaces within the group are known as eyes. In Diagram 11 , the black string at the bottom is in danger of being captured.
To ensure that Black's string has two eyes, Black needs to play at o. If White plays at o , the black string will no longer be able to make two eyes, and cannot avoid eventual capture; White can always fill in the outside liberties and then play at p and at q.
Black plays at p or q would only hasten the string's death. The black string at the top left of Diagram 11 is already alive even though there is a White stone inside one of its eyes.
Since White can never capture the black stones, the White stone caught inside the string cannot be saved. When you dominate the board and control more game pieces than your opponent at the end of the game all spaces are filled you are declared the winner.
The game is easy to learn however will require years to master, if you ever do. Is Go as complex as the board game chess?
The concept of Go is simpler to grasp however it is far more complex.Board Size. Welcome to COSUMI! On this site, you can play 5×5 to 19×19 Go (a.k.a. Igo, Baduk, and Weiqi), which is a well-known ancient board game. If you do not know how to play Go, please look at Wikipedia (Rules of go) first, and then try a 5×5 game that is just right for a beginner like you. Enjoy! The board game go has been in the news worldwide because a Go game master champion played a computer, with the computer winning more matches than the champion. Since each move opens up numerous possibilities the computer can make the necessary calculations it would take for a favorable outcome faster than a human. Online Go game. ⚫ ⚪ Live games, tournaments, multiple board sizes to choose from. Join our community of enthusiastic Go players.