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Chessopedia: Online Chess Encylopedia

in "O"
  • O'Kelly de Galway, Alberic

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    Alberic O'Kelly de Galway (1911-1980) was a Belgium grandmaster (1956).  In 1962 he became the first grandmaster of over-the-board and  correspondence chess.  He was winner of the 3rd World Correspondence Championship (1962-1965... Read More »

  • Oll, Lembit

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    Lemibt Oll was born in April 23, 1966 in Hohtla-Jarve, Estonia.  In 1982, he was chess champion of Estonia.  In 1983, he was awarded the International Master title.  In 1984, he was junior champion of the USSR.  From 1992 through 1998, he play... Read More »

  • On a Hook

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      Read More »

  • open-closed

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    Open and Closed positions refer to the two main types of pawn structures of the centre . Open positions generally have an open centre , where the majority of the pawns have been swapped off . For example Scotch game results in an open game : ... Read More »

  • Opposition

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    Opposition is a common theme in end-games.Following is an example of opposition: Read More »

  • Orangutan opening

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    This opening (1.b4), also known as Sokolsky's Opening or Polish Opening, got its name during the New York 1924 tournament, when grandmaster Tartakower visited the Bronx Zoo, encountering Suzan the orangutan.  The next day, in the 4th round,  Ta... Read More »

  • overloading

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    It often happens that a piece may protect two or more objectives at the same time. When this happens we refer to that piece as being overloaded. Usually, when your opponent has an overloaded piece you can use it in your favor by performing powerfu... Read More »

  • Owen, John

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    John Owen was born in Staffordshire on July 1, 1827.  In 1851, he was ordained and became a vicar of Hooten, Chesire from 1862 to 1900.  He was a member of George’s Chess Club and was recognized as one of London’s strongest a... Read More »