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The rules of Go govern the play of the game of Go, a two-player board game. The rules have seen some variation over time and from place to place. This article discusses those sets of rules broadly similar to the ones currently in use in East Asia. Even among these, there is a degree of variation.
Lasker's book Go and Go-moku (1934) helped spread the game throughout the U.S., [97] and in 1935, the American Go Association was formed. Two years later, in 1937, the German Go Association was founded. World War II put a stop to most Go activity, since it was a popular game in Japan, but after the war, Go continued to spread. [98]
Though Go with Japanese ko rule is EXPTIME-complete, both the lower and the upper bounds of Robson’s EXPTIME-completeness proof [3] break when the superko rule is added. It is known that it is at least PSPACE-hard, since the proof in [2] of the PSPACE-hardness of Go does not rely on the ko rule, or lack of the ko rule. It is also known that ...
A key concept in the tactics of Go, though not part of the rules, is the classification of groups of stones into alive, dead or unsettled. At the end of the game, groups that cannot avoid being captured during normal play are removed as captures. These stones are dead. Groups can reach this state much earlier during play; a group of stones can ...
Enjoy a classic game of Hearts and watch out for the Queen of Spades!
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Paper and pencil go is a Go variant that can be played with just paper and pencil. [14] Unlike standard Go, games played under these rules are guaranteed to end in a finite number of moves, and no ko rule is needed. Nothing is ever rubbed out. It differs from standard Go in the following ways: Surrounded stones are not captured, but just marked.