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In chess, prophylaxis consists of a move or series of moves done by a player to prevent their opponent from taking some action. Such preventive moves, or prophylactic moves, aim not only to improve one's position but also to restrict the opponent in improving their own. Many standard and widespread opening moves can be considered prophylactic.
Marseillais chess – each player moves twice per turn. If the first move gives check, the player doesn't make the second move that turn. Progressive chess – the number of moves played each turn increases progressively. White starts with one move, then Black plays two moves, then White plays 3 moves, etc.
Please do not move this article until the discussion is closed. In chess , a trap is a move which tempts the opponent to play a bad move. Traps are common in all phases of the game; in the opening , some traps have occurred often enough that they have acquired names.
The name "hypermodern" was originated by Tartakower; [4] his book Die hypermoderne Schachpartie (English: The Hypermodern Chess Game) was published in 1924. Nimzowitsch's book Mein System (English: My System) was published in 1925 through to 1927 in five installments. It discusses elements of hypermodernism, but focuses mainly on positional chess.
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.
Due to moving first, White starts the game with the initiative, [2] but it can be lost in the opening by accepting a gambit.Players can also lose initiative by making unnecessary moves that allow the opponent to gain tempo, such as superfluous "preventive" (prophylactic) moves intended to guard against certain actions by the opponent, that nonetheless require no specific response by them.
There are other symbols used by various chess engines and publications, such as Chess Informant and Encyclopaedia of Chess Openings, when annotating moves or describing positions. [8] Many of the symbols now have Unicode encodings, but quite a few still require a special chess font with appropriated characters.
The move 1.f4 slightly weakens White's king's position. [17] Chessgames.com's statistics indicate that the opening is not an effective way of preserving White's first-move advantage : as of February 2013, out of 3,872 games with 1.f4, White had won 30.7%, drawn 32%, and lost 37.7%, for a total score of 46.7%.