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The nature of a mistake may be more strategic than tactical; in some cases, the move receiving a question mark may be one for which it is difficult to find a refutation. A move that overlooks a forthcoming brilliant combination from the opponent would rarely receive more than one question mark, for example. The symbol can also be used for a ...
The opening's name is thought to originate either from Chess.com user "Lenny_Bongcloud", who used the opening with little success, [1] or more generally in reference to a bong, a device used to smoke cannabis, humorously implying that one would need to be intoxicated to think that using the opening is a legitimate strategy.
In chess, a tactic is a sequence of moves that each makes one or more immediate threats – a check, a material threat, a checkmating sequence threat, or the threat of another tactic – that culminates in the opponent's being unable to respond to all of the threats without making some kind of concession.
A variant first described by Claude Shannon provides an argument about the game-theoretic value of chess: he proposes allowing the move of “pass”. In this variant, it is provable with a strategy stealing argument that the first player has at least a draw thus: if the first player has a winning move in the initial position, let him play it, else pass.
The King's Fianchetto Opening or Benko's Opening [1] (also known as the Hungarian Opening, Barcza Opening, or Bilek Opening) is a chess opening characterized by the move: 1. g3. White's 1.g3 ranks as the fifth most popular opening move, but it is far less popular than 1.e4, 1.d4, 1.c4 and 1.Nf3. It is usually followed by 2.Bg2, fianchettoing ...
Réti popularized these moves against all defenses in the spirit of hypermodernism, and as the opening developed it gained structure and a clearer distinction between it and other openings. Hans Kmoch called the system of attack employed by Réti in the game Réti–Rubinstein, Carlsbad 1923, [ 5 ] "the Réti Opening" or "the Réti System".
The Sämisch Variation of the King's Indian Defence is a chess opening that begins with the moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3. The Sämisch is a subtle blockading system and a critical challenge to the King's Indian. [1] It is named after the German grandmaster Friedrich Sämisch.
The Baltic Defense (also known as the Grau Defense, or the Sahovic Defense) is a chess opening characterized by the moves: 1. d4 d5 2. c4 Bf5!? The Baltic is an unusual variation of the Queen's Gambit Declined (QGD). In most defenses to the QGD, Black has difficulties developing his queen bishop. This opening takes a radical approach to the ...