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  2. Chess annotation symbols - Wikipedia

    en.wikipedia.org/wiki/Chess_annotation_symbols

    Question marks and exclamation points that denote a move as bad or good are ubiquitous in chess literature. [1] Some publications intended for an international audience, such as the Chess Informant, have a wide range of additional symbols that transcend language barriers. [2]

  3. Algebraic notation (chess) - Wikipedia

    en.wikipedia.org/wiki/Algebraic_notation_(chess)

    Portable Game Notation (PGN) is a text-based file format for storing chess games, which uses standard English algebraic notation and a small amount of markup. [11] PGN can be processed by almost all chess software, as well as being easily readable by humans. For example, the Game of the Century could be represented as follows in PGN:

  4. Zermelo's theorem (game theory) - Wikipedia

    en.wikipedia.org/wiki/Zermelo's_theorem_(game...

    In game theory, Zermelo's theorem is a theorem about finite two-person games of perfect information in which the players move alternately and in which chance does not affect the decision making process. It says that if the game cannot end in a draw, then one of the two players must have a winning strategy (i.e. can force a win).

  5. Chess theory - Wikipedia

    en.wikipedia.org/wiki/Chess_theory

    Chess initial position. The game of chess is commonly divided into three phases: the opening, middlegame, and endgame. [1] There is a large body of theory regarding how the game should be played in each of these phases, especially the opening and endgame.

  6. Chess opening theory table - Wikipedia

    en.wikipedia.org/wiki/Chess_Opening_Theory_Table

    Chess opening theory books that provide these tables are usually quite large and difficult for beginners to use. Because the table entries typically do not include the themes or goals involved in a given line, beginners will either try to memorize the tables or simply drown in the detail.

  7. Chess opening - Wikipedia

    en.wikipedia.org/wiki/Chess_opening

    The opening is the initial stage of a chess game. It usually consists of established theory.The other phases are the middlegame and the endgame. [1] Many opening sequences, known as openings, have standard names such as "Sicilian Defense".

  8. Guess 2/3 of the average - Wikipedia

    en.wikipedia.org/wiki/Guess_2/3_of_the_average

    In game theory, "guess ⁠ 2 / 3 ⁠ of the average" is a game where players simultaneously select a real number between 0 and 100, inclusive. The winner of the game is the player(s) who select a number closest to ⁠ 2 / 3 ⁠ of the average of numbers chosen by all players.

  9. Knight (chess) - Wikipedia

    en.wikipedia.org/wiki/Knight_(chess)

    The knight (♘, ♞) is a piece in the game of chess, represented by a horse's head and neck. It moves two squares vertically and one square horizontally, or two squares horizontally and one square vertically, jumping over other pieces. Each player starts the game with two knights on the b- and g-files, each located between a rook and a bishop ...