{"id":49,"date":"2006-11-18T11:06:34","date_gmt":"2006-11-18T15:06:34","guid":{"rendered":"http:\/\/blogs.law.harvard.edu\/guorui\/2006\/11\/18\/my-favorate-board-game-go\/"},"modified":"2007-01-03T13:18:11","modified_gmt":"2007-01-03T17:18:11","slug":"my-favorate-board-game-go","status":"publish","type":"post","link":"https:\/\/archive.blogs.harvard.edu\/guorui\/2006\/11\/18\/my-favorate-board-game-go\/","title":{"rendered":"My Favorate Board Game: Go"},"content":{"rendered":"<p>Go is a traditional Chinese game.<\/p>\n<p>Rule: Players place alternately black and white stones on the vacant intersections of a 19\u00d719 rectilinear grid. A stone is captured and removed if it is tightly surrounded by stones of the opposing color. The objective is to control a larger territory than the opponent by placing one&#8217;s stones so they cannot be captured, but can capture any opposing stones played in one&#8217;s territory. The game ends and the score is counted when both players consecutively pass on a turn, indicating that neither side can increase its territory or reduce its opponent&#8217;s; the game can also end by resignation.<br \/>\n<img decoding=\"async\" alt=\"go\" src=\"http:\/\/upload.wikimedia.org\/wikipedia\/en\/2\/2e\/Go_board.jpg\" \/><\/p>\n<p>Just for info:<\/p>\n<p>It is commonly said that no Go game has ever been played twice. Calculations suggest this may be true: on a 19\u00d719 board, there are about 3<sup>361<\/sup>\u00d70.012 = 2.1\u00d710<sup>170<\/sup> possible positions, most of which are the end result of about (120!)<sup>2<\/sup> = 4.5\u00d710<sup>397<\/sup> different (no-capture) games, for a total of about 9.3\u00d710<sup>567<\/sup> games. Allowing captures gives as many as<\/p>\n<dl>\n<dd><img decoding=\"async\" alt=\"10^{7.49 \\times 10^{48}}\" src=\"http:\/\/upload.wikimedia.org\/math\/9\/6\/f\/96f79e80bf8154d8b8a9ea207148a0e9.png\" \/><\/dd>\n<\/dl>\n<p>possible games, all of which last for over 4.1\u00d710<sup>48<\/sup> moves.<\/p>\n<p>In comparison, the number of legal positions in chess is estimated to be between 10<sup>43<\/sup> and 10<sup>50<\/sup>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Go is a traditional Chinese game. Rule: Players place alternately black and white stones on the vacant intersections of a 19\u00d719 rectilinear grid. A stone is captured and removed if it is tightly surrounded by stones of the opposing color. &hellip; <a href=\"https:\/\/archive.blogs.harvard.edu\/guorui\/2006\/11\/18\/my-favorate-board-game-go\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":242,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1017,901],"tags":[],"class_list":["post-49","post","type-post","status-publish","format-standard","hentry","category-in-english","category-life"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/archive.blogs.harvard.edu\/guorui\/wp-json\/wp\/v2\/posts\/49","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/archive.blogs.harvard.edu\/guorui\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/archive.blogs.harvard.edu\/guorui\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/archive.blogs.harvard.edu\/guorui\/wp-json\/wp\/v2\/users\/242"}],"replies":[{"embeddable":true,"href":"https:\/\/archive.blogs.harvard.edu\/guorui\/wp-json\/wp\/v2\/comments?post=49"}],"version-history":[{"count":0,"href":"https:\/\/archive.blogs.harvard.edu\/guorui\/wp-json\/wp\/v2\/posts\/49\/revisions"}],"wp:attachment":[{"href":"https:\/\/archive.blogs.harvard.edu\/guorui\/wp-json\/wp\/v2\/media?parent=49"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive.blogs.harvard.edu\/guorui\/wp-json\/wp\/v2\/categories?post=49"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive.blogs.harvard.edu\/guorui\/wp-json\/wp\/v2\/tags?post=49"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}