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Neo-Grünfeld Defence : ウィキペディア英語版
Grünfeld Defence

The Grünfeld Defence (ECO codes D70–D99) is a chess opening characterised by the moves:
:1. d4 Nf6
:2. c4 g6
:3. Nc3 d5
The opening relies on one of the main principles of the hypermodern school, which was coming to the fore in the 1920s—that a large pawn centre could be a liability rather than an asset.
==History==
The first instance of this opening is in an 1855 game by Moheschunder Bannerjee, an Indian player who had transitioned from Indian chess rules, playing Black against John Cochrane in Calcutta, in May 1855:
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 0-0 6.cxd5 Nxd5 7.Be2 Nxc3 8.bxc3 c5 9.0-0 cxd4 10.cxd4 Nc6 11.Bb2 Bg4 12.Rc1 Rc8 13.Ba3 Qa5 14.Qb3 Rfe8 15.Rc5 Qb6 16.Rb5 Qd8 17.Ng5 Bxe2 18.Nxf7 Na5
and White mates in three (19.Nh6+ double check Kh8 20.Qg8+ Rxg8 21.Nf7#).〔Edward Winter, ''Kings, Commoners and Knaves: Further Chess Explorations'', Russell Enterprises, Inc., 1999, p. 141. ISBN 1-888690-04-6.〕〔(Cochrane–Moheschunder )〕 Cochrane published a book reporting his games with Moheshchunder and other Indians in 1864.
It gained popularity after Ernst Grünfeld introduced it into international play at Vienna 1922, where, in his first game with the defense, he defeated future world champion Alexander Alekhine.〔William Hartston, ''The Grünfeld Defence'', Chess Digest, 1971, p. 125.〕 Grünfeld usually employed a very classical style. The defence was later adopted by a number of prominent players, including Vasily Smyslov, Viktor Korchnoi, Leonid Stein, and Bobby Fischer. Garry Kasparov often used the defence, including in his World Championship matches against Anatoly Karpov in 1986, 1987 and 1990, and Vladimir Kramnik in 2000. Currently active notable players who employ the opening include Loek van Wely, Peter Svidler, Peter Leko, Viswanathan Anand, Luke McShane and Gata Kamsky.〔(【引用サイトリンク】title=Chessgames.com – Searchable database )〕 Anand employed it twice in the World Chess Championship 2010. In the World Chess Championship 2012 between Anand and Boris Gelfand, each player used the Grünfeld once with both games ending in draws. Anand faced the Grunfeld against Magnus Carlsen during the first game of the World Chess Championship 2014 and drew in a Rook and Queen ending.
The Game of the Century between Donald Byrne and 13-year-old Bobby Fischer on October 17, 1956, featured this opening, although arriving in the Grünfeld via a transposition of moves (using 1.Nf3 Nf6 2.c4 g6 3.Nc3 Bg7 4.d4 0-0 5.Bf4 d5).

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Grünfeld Defence」の詳細全文を読む



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