The Semi-Tarrasch Defense is a
chess opening
The opening is the initial stage of a chess game. It usually consists of established Chess_theory#Opening_theory, theory. The other phases are the chess middlegame, middlegame and the chess endgame, endgame. Many opening sequences, known as ''op ...
characterized by the following moves:
:1.
d4 d5
:2.
c4 e6
:3.
Nc3 Nf6
:4.
Nf3 c5
The Semi-Tarrasch is a variation of the
Queen's Gambit Declined
The Queen's Gambit Declined (or QGD) is a chess opening in which Black declines a pawn offered by White in the Queen's Gambit:
:1. d4 d5
:2. c4 e6
This is known as the ''Orthodox Line'' of the Queen's Gambit Declined. When the "Queen's Gambi ...
(''ECO'' codes D40 through D42).
General concepts
Unlike the regular
Tarrasch, in the Semi-Tarrasch Defense Black does not accept an isolated pawn, since they intend to recapture on d5 with the knight (as after 5.cxd5, 5...exd5 has long been known to be dubious after 6.Bg5), but they cede a advantage to White. The intended recapture with the f6-knight prevents Black from seamlessly transposing to the Semi-Tarrasch if White has played 4.Bg5.
After 4...c5, White usually plays 5.cxd5 Nxd5 6.e3 or 6.e4, which leads to different types of middlegame play and has attracted the interest of strong players with both colors since the early twentieth century.
Symmetrical Variation
In this line, White forgoes the
fianchetto
In chess, the fianchetto ( or spelling pronunciation ; "little flank") is a pattern of wherein a bishop is developed to the second of the adjacent b- or g-, the having been moved one or two squares forward.
The fianchetto is a staple of man ...
, with its direct play against d5, opting to keep central tension for the moment by playing 5.e3, after which 5...Nc6 is the normal continuation. From this position, White may choose to inflict the isolated pawn on Black, accept the weakness themselves in return for active piece play, or play 6.a3, with a view to dxc5, followed by b4 and Bb2, aiming for positions in which the extra tempo will come in useful if Black keeps the symmetry; thus, 6...Ne4, once chosen by
Bobby Fischer
Robert James Fischer (March 9, 1943January 17, 2008) was an American Grandmaster (chess), chess grandmaster and the eleventh World Chess Championship, World Chess Champion. A chess prodigy, he won his first of a record eight US Chess Champi ...
in his
Candidates Match
The Candidates Tournament (or in some periods Candidates Matches) is a chess tournament organized by FIDE, chess's international governing body, since 1950, as the final contest to determine the challenger for the World Chess Championship. The win ...
with
Tigran Petrosian
Tigran Vardani Petrosian (; ; 17 June 1929 – 13 August 1984) was a Soviet-Armenian chess grandmaster and the ninth World Chess Champion from 1963 to 1969. He was nicknamed "Iron Tigran" due to his almost-impenetrable defensive playing s ...
in 1971, gives a different turn. This opening was also used by
Ding Liren
Ding Liren ( zh, c=丁立人; born 24October 1992) is a Chinese chess grandmaster who was the 17th World Chess Champion from 2023–24. He is also a three-time Chinese Chess Champion, was a member of the Chinese chess teams that won the Chess ...
against
Hikaru Nakamura
Christopher Hikaru Nakamura[2022 Candidates Tournament
The 2022 Candidates Tournament was an eight-player chess tournament to decide the challenger for the World Chess Championship 2023. The tournament took place at the Palacio de Santoña in Madrid, Spain, from June 16 to July 5, 2022,](_blank)[World Chess Championship
The World Chess Championship is played to determine the world champion in chess. The current world champion is Gukesh Dommaraju, who defeated the previous champion Ding Liren in the World Chess Championship 2024, 2024 World Chess Championship. ...]
with this victory and later on becoming the World Chess Champion.
Symmetrical Variation has ''ECO'' code D40.
See also
*
List of chess openings
This is a list of chess openings, organised by the ''Encyclopaedia of Chess Openings'' (''ECO'') code classification system. The chess openings are categorised into five broad areas ("A" through "E"), with each of those broken up into one hundred ...
*
List of chess openings named after people
''The Oxford Companion to Chess'' lists 1,327 named openings and variants. Chess players' names are the most common sources of opening names. The name given to an opening is not always that of the first player to adopt it; often an opening is name ...
References
*
* {{Citation , last=de Firmian , first=Nick , authorlink=Nick de Firmian , year=2008 , title=
Modern Chess Openings
''Modern Chess Openings'' (usually called ) is a reference book on chess openings, first published in 1911 by the British players Richard Griffith (chess player), Richard Clewin Griffith (1872–1955) and John Herbert White (1880–1920). The fif ...
, edition=15th , publisher=McKay , isbn=978-0-8129-3682-7
Chess openings