Edge sorting: Difference between revisions

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{{Use dmy dates|date=August 2018}}

[[File:Playing_cards_modified.jpg|thumb|A deck of face-down playing cards]]

'''Edge sorting''' is a technique used in [[advantage gambling]] where a player determines whether a face-down [[playing card]] is likely to be low or high at [[Casino game#Table games|casino table games]] by observing, learning, and exploiting subtle unintentional differences on the backs of the cards being dealt.<ref>{{cite web|url=http://www.ibtimes.com/what-edge-sorting-phil-ivey-sued-borgata-casino-allegedly-cheated-win-96-million-baccarat-1571442 |title=What Is Edge Sorting? Phil Ivey Sued By Borgata Casino, Allegedly Cheated To Win $9.6 Million In Baccarat |work=[[International Business Times]] |author=Thomas Barrabi |date=14 April 2014 |accessdate=19 April 2014}}</ref> The technique requires the player to trick the dealer into rotating specific, high-value cards so that they are distinguishable from lower-value ones after shuffling.

Applied by poker player [[Phil Ivey]] and subsequently challenged in court by the casino in which he did so, the England and Wales [[High Court of Justice|High Court]] and Court of Appeal and the UK Supreme Court ruled that the technique, which requires the player to trick the dealer into rotating specific, high-value cards, isbe cheating in civil law, and that a casino was justified in refusing payment of winnings. This ruling would not be applicable if the player simply took advantage of an observed error or anomaly in the deck for which he was not responsible.<ref>{{cite news|url=https://www.washingtonpost.com/news/morning-mix/wp/2017/10/26/what-is-edge-sorting-and-why-did-it-cost-a-poker-star-10-million-in-winnings/?noredirect=on |title=What is 'edge-sorting' and why did it cost a poker star $10 million in winnings? |newspaper=[[The Washington Post]] |author=Derek Hawkins |date=26 October 2017 |accessdate=25 July 2018}}</ref>

==Technique==