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Game play
The players both count aloud to three, or speak the name of the game (e.g. "Rock! Paper! Scissors!" or "Reaux! Sham! Beaux!"), each time raising one hand in a fist and swinging it down on the count. On the third count, or on a further beat after the third count, the players change their hands into one of three gestures, which they then "throw" by extending it towards their opponent.
The objective is to select a gesture which defeats that of the opponent. Gestures are resolved as follows:
If both players choose the same gesture, the game is tied and played again.
Frequently, the game is played in a "best two out of three" match.[citation needed] CheatingThough this is very unsportsman-like, one might consider it a clever tactic. One of the first tricks learned by a Rock-Paper-Scissors novice is to hold back a throw of paper until the last possible moment to dupe an opponent into believing that one may actually be throwing a rock. Both paper and scissors have this ability; however, unless one is employing a "double-back" strategy, cloaking a paper throw is likely to draw an instinctive paper from one's opponent. If the throw is accidentally revealed too late, that is, not revealed until the thrower's arm breaks the plane where the thrower's arm is perpendicular to the thrower's torso (at a 90 degree angle), this is considered a foul. In such a case the referee will assign a throw of rock, even if this is not what the thrower intended. This is known as a "forced rock." A common variation on the opening ritual is to have both players hold their hands behind their backs and reveal their already formed throws after the count of three. The intention is to prevent any sort of timing based cheating. Another way to cheat is to prime three times instead, if the opponent primed twice only, the other could see his opponent's throw without revealing his own, claiming "I thought we are doing three primes". This form of cheating usually does not get the cheater anywhere, as the round will be most likely replayed. In many cases, participants will bounce three times (while saying "rock, paper, scissors") and then revealing the throw while saying something else (such as "shoot"). Note: 'priming' is the number of bounces one does before revealing the throw. VariationsThere are many different variations of Rock, Paper, Scissors which range from simple changes in the names of the objects to increasing the number of players or objects. While interesting, most rule variations suffer from one problem or another, making them less interesting games. It is sometimes called Paper, Scissors, Stone. A simple American variation is Pirate, Cowboy, Ninja (Cowboy beating Ninja, Pirate beating Cowboy, Ninja beating Pirate). This version is performed with the players starting standing back to back, taking three paces in opposite directions and then turning and revealing their choice.[citation needed] Versions of Rock, Paper, Scissors are also observed in many different cultures. It is usually known by direct translations of "Rock, Paper, Scissors" although some cultures have slightly different names or even entirely different elements representing the different objects. For example in Japan there is a variation which uses a tiger, a chief and the chief's mother as the three elements (the tiger beating the chief's mother, the chief beating the tiger and the chief's mother beating the chief). In Indonesia another version is played with the elements as an elephant, a man and an ant (the elephant crushing the man, the man crushing the ant and ant humorously defeating the elephant by crawling into the animal's ear and making it go insane).[1] In Glasgow, Scotland, the game has also been further developed and is proving very popular amongst the dance community. There are three variants - drum and bass/ballroom dancing/techno. Techno, in which you wave your hands above your head and make techno noises, beats drum and bass. Drum and bass, in which you move your hands down low and make fast drum and bass sounds, beats ballroom. Ballroom, in which you put both arms out in the middle as if waltzing whilst saying 'with you have this dance with me' beats techno. The game has an interesting variant by having no count of 1-2-3-4 between actions, as they merge from one to the other after performing each action for a count of four. A seperate referee is necessary to keep score. Because the game is best to music it is very popular in Glasgow clubs, and certain venues have even held live competitions in which contestants can win free drinks and tickets to select nights. Malaysians use water instead of paper, and in place of scissors is a bird, made by holding the fingertips together, forming the shape of a beak. The bird drinks up the water, the water sinks the rock, and the rock kills the bird. The Chinese and Koreans use Cloth along with Rock and Scissors, while the Japanese have adopted Paper. Minor variation is also observed in the standard game play.[citation needed] The Tamils in India play a variant called Chi-Ku-Ba with slightly different hand formations. Ku is rock formation, held the same; Chi is a scissors with the two fingers closed instead of open; Ba is paper but held vertically with all fingers open like a full hand, with the fingers separated from each other. Chi-Ku-Ba is played with two hands instead of one; after you lose one hand, only the other hand remains in the game. Unlike the rock-scissors-paper rule, there is no asymmetric cycle. One has to play exactly what the other player plays to stay in the game. It is very tough to maintain a draw with two hands, as you get combinations like this, Chi-Chi, Chi-Ku or Ku-Chi, Chi-Ba or Ba-Chi, Ku-Ku, Ku-Ba or Ba-Ku, & Ba-Ba.[citation needed] Singaporeans play the Indian variant with a slight twist; everything stays the same except that one has to play what the other player did not play. So if the opponent plays Ku-Chi, one have to have Ba-Ku, Ba-Ba, Chi-Ku or Chi-Ba in order to have both hands "alive". Also the use of another figure in the game is used as a cheat but can only be used when playing under international rules. For example, if a bomb were included in the game, it beats all players but can only be used once in a game of rock paper scissors. MathematicsNon-transitivityRock, Paper, Scissors is also often used as an example of the mathematical concept of non-transitivity. A transitive relation R is one for which a R b and b R c implies a R c. A reflexive, antisymmetric, and transitive relation on a set is known as a partial ordering, from which notions of "greater" and "less" follow. A game option which is "greater" than another is closer to being optimal, but such a notion does not exist in Rock, Paper, Scissors: The relation used to determine which throws defeat which is non-transitive. Rock defeats Scissors, and Scissors defeat Paper, but Rock loses to Paper. In fact, Rock-Paper- Scissors could be called "antitransitive" because if A strictly defeats B, and B strictly defeats C, A necessarily loses against C. Commutativity and non-associativityRock, Paper, Scissors also provides an example of a magma that is commutative but not associative, by defining a binary operation on the set {rock, paper, scissors} in which the product of a pair is defined to be the "winner". Concurrent game (not turn-based)Rock, Paper, Scissors is also an example of a concurrent game, i.e., one which is not turn-based. In a turn-based game, such as chess, only one player moves at a time. In a concurrent game, all players make their moves at the same time. Computer playA large effort has gone into developing successful computer strategies for Reaux Sham Beaux. The results of competition between the different programs is shown at http://chappie.stanford.edu/cgi-bin/roshambot. Many video games contain an elemental attack and defense system that is very similar to rock-paper-scissors. For example, in Pokemon, a fire-type Pokemon will be stronger against a grass-type, a grass-type will usually beat a water-type, and a water-type Pokemon will almost always defeat a fire-type (in other words, fire>grass, grass>water, water>fire.) RPGs are the most common type of video game to use these rock-paper-scissors inspired battle systems. OriginMr. Walker and Cory Mudgett claim that the earliest known written record of the game is from around 200 BC in Japan, where the game was (and is) referred to as "Jan-Ken." I found the existence of the Japanese version of the game corroborated elsewhere, although there is no corroboration for the 200 BC claim. Cultural referencesBecause of its widespread use, Rock Paper Scissors has received substantial references in popular culture. Many television series poke fun at particular characters' incompetence at understanding the game rules, or show how mischievous characters are often able to "win" the game by inventing new objects which beat all the others.
Federal caseIn 2006, Federal Judge Gregory Presnell from the Middle District of Florida ordered opposing sides in a lengthy court case to settle a trivial (but lengthily debated) point over the appropriate place for a deposition using the game of rock-paper-scissors.[2] The ruling in Avista Management v. Wausau Underwriters stated:
Auction house RPS matchWhen Takashi Hashiyama, CEO of a Japanese television equipment manufacturer, decided to auction off the collection of Impressionist paintings owned by his corporation, including works by Cézanne, Picasso and van Gogh, he contacted two leading U.S. auction houses, Christie's International and Sotheby's Holdings, seeking their proposals on how they would bring the collection to the market as well as how they would maximize the profits from the sale. Both firms made elaborate proposals, but neither was persuasive enough to get Hashiyama’s business. Willing to split up the collection into separate auctions, Hashiyama asked the firms to decide between themselves who would get the Cézanne's "Large Trees Under the Jas de Bouffan", worth $12-16 million. The houses were unable to reach a decision. Hashiyama told the two firms to play Rock, Paper, Scissors, to decide who would get the rights to the auction, explaining that "it probably looks strange to others, but I believe this is the best way to decide between two things which are equally good". The auction houses had a weekend to come up with a choice of move. Christie's went to the 11-year-old twin daughters of an employee, who suggested "scissors" because "Everybody expects you to choose 'rock'." Sotheby's admitted that they treated it as a game of chance and had no particular strategy for the game, but went with "paper". Christie's won the match, with millions of dollars of commission for the auction house. Evolutionary strategyImage:Uta3.jpg The Common Side-blotched Lizard (Uta stansburiana) exhibits a Rock-Paper-Scissors pattern in its different mating strategies. Biologist Barry Sinervo from the University of California, Santa Cruz has discovered a Rock-Paper-Scissors evolutionary strategy in the mating behaviour of the side-blotched lizard species Uta stansburiana. Males have either orange, blue or yellow throats and each type follows a fixed, heritable mating strategy:[4]
This can be summarized as "orange beats blue, blue beats yellow, and yellow beats orange", which is similar to the rules of rock, paper, scissors. The proportion of each male type in a population is similar in the long run, but fluctuates widely in the short term. For periods of 4-5 years, one strategy predominates, after which it declines in frequency as the strategy that manages to exploit its weakness increases. This corresponds to the stable pattern of the game in the replicator dynamics where the dynamical system follows closed orbits around the mixed strategy Nash equilibrium (Sinervo & Lively, 1996; Sinervo, 2001; Alonzo & Sinervo, 2001; Sinervo & Clobert, 2003; Sinervo & Zamudio, 2001). Bacteria also exhibit a rock-paper-scissors dynamic when they engage in antibiotic production. The theory for this finding was demonstrated by computer simulation and in the laboratory by Benjamin Kerr, working at Stanford University with Brendan Bohannan (Nature. 2002 Jul 11;418(6894):171-4.). The antibiotics in question are the bacteriocins - more specifically, colicins produced by Escherichia coli. Biologist Benjamin C. Kirkup, Jr. further demonstrated that the colicins were active as E. coli compete with each other in the intestines of mice, and that the rock-paper-scissors dynamics allowed for the continued competition between antibiotic producing and antibiotic sensitive strains, because antibiotic resistant strains would out-compete the producing strains, providing an environment in which sensitive strains could successfully become established again (Nature. 2004 Mar 25;428(6981):412-4.). TournamentsThe World RPS Society [1] has been holding the world championships in Canada for the past 5 years. Hundreds of competitors from all over the world come to compete in these championships and during the first 4 years, home grown Canadian talent won the coveted trophy. The latest winner is Bob 'The Rock' Cooper, from London, UK. He defeated 496 competitors to take the title, winning with a pair of scissors. Bob is quickly gaining cult status now in the UK, and has his own fansite: [2] Bob's great popularity has insprired his fans to be petitioning the BBC to re-open the nominations for the Sports Personality of the Year Awards 2006. WRPS sanctioned tournamentsStarting in 2002, the World Rock Paper Scissors Society (WRPS) standardized a set of rules for international play[5] and has overseen annual International World Championships. These open, competitive championships have been widely attended by players from around the world and have attracted widespread international media attention.[6][7][8][9][10] WRPS events are noted for their large cash prizes, elaborate staging, and colourful competitors.[11] In 2004, the championships were broadcast on the U.S. television network Fox Sports Net. Professional poker player Phil Gordon conducted what he called "The World Series of Rock-Paper-Scissors" during the 2005 World Series of Poker in which 64 contestants of the WSOP competed in a tournament similar to the NCAA tournament. World Championship results since 2002
Tour eventsIn addition to the International World Championships the WRPS also endorses or sanctions a year-round series of tournaments world wide. "Endorsed" tournaments agree to abide by the WRPS standardized international rules of play and code of conduct, while "Sanctioned" tournaments will net the winner a trip to compete at the International World Championships. Some of the major events of this tour include:
World Series of RoshamboProfessional poker player, Phil Gordon, hosts the annual World Series of Roshambo during the World Series of Poker every year. In 2006, Annie Duke outlasted a field of 64 players who paid $500 each to enter the tournament. First place prize was $10,000. This is the largest buy-in Roshambo event in the world. USARPS TournamentsUSARPS League is the official Rock Paper Scissors League of the United States. It is sponsored by Bud Light. Matti Leshem is the co-commissioner of the USA Rock Paper Scissors League In April 2006, the inaugural USA Rock Paper Scissors League Championship was held in Las Vegas, Nevada. Following months of regional qualifying tournaments held across the US, 257 players were flown to Las Vegas for a single-elimination tournament at the House of Blues where the winner received $50,000. The tournament was shown on the A&E Network on June 12, 2006. At the first USA Rock Paper Scissors League Championship, Dave "The Drill" McGill defeated Robert "Fast Twitch" Twitchel to win the tournament. In addition, Jason "King of the Morning" Wood won a best-of-500 marathon to earn a brand new car. The 2007 USARPS Tournament qualifiers are currently underway across America, and the $50,000 national tournament will take place at the Las Vegas Mandalay Bay in May. National XtremeRPS Competition 2007-2008The XtremeRPS National Competition[17] is a Nationwide RPS competition with Preliminary Qualifying contests starting in January 2007 and ending in May 2008, followed by regional finals in June and July 2008. The national finals will be held in Des Moines in August 2008, with a chance to win up to $5,000. Notes
References
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