8 7 6 5 4 3 2 1 a b c d e f g h

Anderssen's Opening is a chess opening defined by the opening move 1.a3 in algebraic notation. It is named after Adolf Anderssen who played it three times in his 1858 match against Paul Morphy. This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... This image is originally from xboard. ... The first moves of a chess game are the opening moves, collectively referred to as the opening. ... Algebraic chess notation is the method used today by all competition chess organizations and most books, magazines, and newspapers to record and describe the play of chess games. ... Karl Ernst Adolf Anderssen (July 6, 1818 - March 13, 1879) was a famous German chess master, one of the most renowned of the classic masters of 19th century chess. ... 1858 is a common year starting on Friday. ... Paul Charles Morphy (June 22, 1837 - July 10, 1884), The Pride and Sorrow of Chess, is considered to have been the greatest chess master of his time, an unofficial World Champion and, is considered by many, including some grandmasters (see below) the greatest chessplayer who has ever lived. ...

This opening move is rare because it does little or nothing for development or control of the center. In some cases White will be able to transpose the game to an opening where 1.a3 will have been useful, but using a tempo on such a move already on move one is premature. Because of its rarity, 1.a3 is classified as A00 in the Encyclopaedia of Chess Openings. In chess, tempo refers to the time taken by a move. ... A00 is the Encyclopaedia of Chess Openings designator for unconventional chess openings with an unusual first move from White. ... The Encyclopedia of Chess Openings (ECO) is a book collection (now also a computer database) describing chess openings. ...

Still 1.a3 is not the worst opening move. Although it is not a very constructive move for White it is not a destructive one, unlike 1.f3 (Barnes Opening). Some players may enjoy the psychological effect of such a move, or believe it will help them against an opponent with a superior knowledge of opening theory. Barnes Opening (also called Gedults Opening) is a chess opening where White opens with 1. ...

Among the more common Black responses to Anderssen's Opening are 1...d5 which makes a straightforward claim of the center, and 1...g6 which prepares to fianchetto a bishop to point down on White's slightly weakened queenside. The response 1...e5 is also possible, but White can then play 2.c4, leading to a kind of Sicilian Defense with colors reversed, where a pawn on a3 can be useful. In chess the fianchetto (Italian little flanking) is a pattern of development wherein a bishop is developed to the second rank of the adjacent knight file, the knight pawn having been moved one or two squares forward. ... A bishop (♗♝) is a piece in the strategy board game of chess. ... The Sicilian defence is a chess opening which begins with: 1. ...