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In chess, an X-ray or X-ray attack is a tactic where a piece indirectly controls a square from the other side of an intervening piece. Generally, a piece performing an X-ray either: effects a skewer, [1] [2] [3] indirectly attacks an enemy piece through another piece or pieces, or; defends a friendly piece through an enemy piece.
c. 600 – The Karnamuk-i-Artakhshatr-i-Papakan contains references to the Persian game of shatranj, the direct ancestor of modern Chess. Shatranj was initially called "Chatrang" in Persian (named after the Indian version), which was later renamed to shatranj. c. 720 – Chess spreads across the Islamic world from Persia.
The bulk of the content consists of diagrams of positions and chess moves, annotated with symbols, many of them developed by Chess Informant. Chess Informant pioneered the use of Figurine Algebraic Notation to avoid the use of initials for the names of the pieces, which vary between languages.
A Short History of Chess. McKay. ISBN 0-679-14550-8. OCLC 17340178. Eales, Richard (1985). Chess, The History of a Game. Facts on File. ISBN 978-0816011957. Forbes, Duncan (1860). The History of Chess: From the Time of the Early Invention of the Game in India Till the Period of Its Establishment in Western and Central Europe. London: W.H. Allen ...
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.
Discovered attacks—especially checks—can win material when the moving piece captures an opposing piece nominally protected by another opposing piece. If the opponent deals with the discovered attack (obligatory if it is a check), the attacking player will have time to return the moving piece out of harm's way.
In the American Chess Bulletin in 1905, the opening was referred to as the Danvers Opening, so named by E. E. Southard, a well-known psychiatrist and a strong amateur chess player, after the hospital where he worked. [1] Bernard Parham, in USCF tournament in 2010. Bernard Parham of Indianapolis is one of the few master level players to advocate ...
The recorded history of chess goes back at least to the emergence of chaturanga—also thought to be an ancestor to similar games like xiangqi and shogi —in seventh-century India. After its introduction in Persia, it spread to the Arab world and then to Europe. The modern rules of chess emerged in Europe at the end of the 15th century, with ...