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Arimaa () is a two-player strategy board game that was designed to be playable with a standard chess set and difficult for computers while still being easy to learn and fun to play for humans. Every year since 2004, the Arimaa community has held three tournaments: a World Championship (humans only), a Computer Championship (computers only), and the Arimaa Challenge (human vs. computer). In 2015, the challenge was won decisively by the computer (Sharp by David Wu), with top players agreeing it was no fluke but proof that computers are currently superior to humans. As it was a prerequisite for the prize to be awarded, most of ICGA Journal Issue 38/1 was dedicated to this topic. Arimaa was invented in 2003 by Omar Syed, an Indian American computer engineer trained in artificial intelligence. Syed was inspired by Garry Kasparov's defeat at the hands of the chess computer Deep Blue to design a new game which could be played with a standard chess set, would be difficult for computers to play well, but would have rules simple enough for his then four-year-old son Aamir to understand.〔http://arimaa.com/arimaa/forum/cgi/YaBB.cgi?board=talk;action=display;num=1367476894#7〕 ("Arimaa" is "Aamir" spelled backwards plus an initial "a".) Arimaa has won several awards including ''GAMES Magazine'' 2011 Best Abstract Strategy Game,〔http://www.gamesmagazine-online.com/gameslinks/archives.html#2011awards〕 ''Creative Child Magazine'' 2010 Strategy Game of the Year,〔http://www.murphymonitor.com/articles/templates/news.asp?articleid=1436&zoneid=3〕 and the 2010 Parents' Choice Approved Award.〔http://www.parents-choice.org/product.cfm?product_id=27805&StepNum=1&award=aw〕 It has also been the subject of several research papers. ==Rules== Arimaa is played on an 8×8 board with four trap squares. There are six kinds of pieces, ranging from elephant (strongest) to rabbit (weakest). Stronger pieces can push or pull weaker pieces, and stronger pieces freeze weaker pieces. Pieces can be captured by dislodging them onto a trap square when they have no orthogonally adjacent friendly pieces. There are three ways to win the game: #Move a rabbit to the eighth row (for the gold player) or first row (for the silver player) of the board. #Capture all enemy rabbits. #Deprive the opponent of legal moves. The two players, Gold and Silver, each control sixteen pieces. These are, in order from strongest to weakest: one elephant (), one camel (), two horses (), two dogs (), two cats (), and eight rabbits . These may be represented by the king, queen, rooks, bishops, knights, and pawns respectively when one plays using a chess set.〔http://arimaa.com/arimaa/learn/rulesIntro.html〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arimaa」の詳細全文を読む スポンサード リンク
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