The Nimzo-Indian Defence is a chess opening characterised by the moves:
21-682: (Redirected from E-50 ) E50 or E-50 may refer to: Nimzo-Indian Defence , Encyclopaedia of Chess Openings code E-50 Standardpanzer , a German World War II tank model in the Entwicklung series European route E50 , a road connecting Brest in France with Makhachkala in the Russian Republic of Dagestan M113 E50 , a version of the Mercedes-Benz M113 engine M2 E-50 ,
42-453: A static weakness, and gains play against the central light squares d5 and e4, even in those instances where White is able to recapture with a piece after ...Bxc3. By pinning the knight to the king, black indirectly controls the center by preventing the move e4. Black will aim to close the position to reduce the scope of White's bishops. To this end, Black must blockade the white pawn centre from advancing and neutralise White's attacking chances on
63-708: A version of the M2 Browning machine gun Nokia E50 , a smartphone HMS E50 , a British E class submarine of the First World War E50, a road route in Japan: Kita-Kantō Expressway Higashi-Mito Road Hitachinaka Road [REDACTED] Topics referred to by the same term This disambiguation page lists articles associated with the same title formed as a letter–number combination. If an internal link led you here, you may wish to change
84-589: Is a highly respected defence to 1.d4, is played at all levels and has been played by every world champion since Capablanca . White often plays 3.g3 or 3.Nf3 to avoid the Nimzo-Indian, allowing them to meet 3.Nf3 Bb4+ (the Bogo-Indian Defence ) with 4.Bd2 or 4.Nbd2, rather than 4.Nc3. In the Nimzo-Indian, Black is generally prepared to concede the bishop pair by playing Bxc3. As dynamic compensation, they often double White's c-pawns, which represent
105-467: Is a rarer fifth option). 4.Nf3 is known as the Kasparov Variation , since Garry Kasparov used it to great effect against Anatoly Karpov in their 1985 World Championship match. Kasparov played 4.Nf3 six times, scoring three wins and three draws. Today as White, this is a favourite weapon of GM Alexei Barsov and former Women's Champion Nona Gaprindashvili . It is also sometimes known as
126-452: Is reduced to passivity at the a2-square to defend the pawns on a3 and c4. Without prospects for counterplay, White's game is strategically hopeless, and Black ultimately exchanged queens and won the endgame . The Rubinstein System (named after Akiba Rubinstein ) is White's most common method of combating the Nimzo-Indian. Svetozar Gligorić and Lajos Portisch made great contributions to
147-529: Is the Bronstein Variation , the brainchild of the former world championship finalist David Bronstein . In general, the main line of the Rubinstein has held up very well for Black, so since the 1980s White has begun to look elsewhere for chances of obtaining an advantage. In the Rubinstein, White has often resorted to playing Ne2 rather than Nf3 at some point to be able to recapture on c3 with
168-416: The kingside . An example of Black's strategy carried out successfully is the game Mikhail Botvinnik – Samuel Reshevsky from the 1948 World Chess Championship , which reached the position in the diagram after White's 24th move. Earlier in the game, Reshevsky was able to block White's kingside attack by playing ...Nf6–e8 and ...f7–f5. Now, both White's bishops are reduced to defence, and White's queen
189-469: The Encyclopaedia of Chess Openings , the Nimzo-Indian is classified as E20–E59. This hypermodern opening was developed by Aron Nimzowitsch who introduced it to master-level chess in the early 20th century. Unlike most Indian openings , the Nimzo-Indian does not involve an immediate fianchetto , although Black often follows up with ...b6 and ...Bb7. By pinning White's knight , Black prevents
210-587: The Botvinnik Variation ). This forces Black to retreat the bishop to e7 or capture on c3, which transposes to a line of the Sämisch Variation long considered good for White because they will undouble their pawns at some point by playing cxd5, eliminating the weak pawn on c4, then prepare the e4 pawn break, backed by the bishop pair (and in some cases with f3, since they haven't committed the knight to that square yet), which will gain force in
231-615: The check with 4.Nc3. In the Encyclopaedia of Chess Openings , the Nimzo-Indian Defence has codes E20 to E59. All codes begin with 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4, excluding E20, which also includes alternatives to 3...Bb4 apart from 3...d5 (which would be the Queen's Gambit Declined ). Glossary of chess#kingside This glossary of chess explains commonly used terms in chess , in alphabetical order. Some of these terms have their own pages, like fork and pin . For
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#1732791920693252-423: The knight, thus avoiding the doubled pawns. Two lines where White does this (following 4.e3 0-0) are: Black puts pressure on d4 and leaves open the option of playing ...d5, or ...d6 and ...e5. The game can still transpose to the main line mentioned above after moves such as 5.Bd3 d5 6.Nf3 0-0 7.0-0, but there are two major variations particular to 4...c5: Favoured by Nimzowitsch, 4...b6 is a move in accordance with
273-468: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=E50&oldid=1025636258 " Category : Letter–number combination disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Nimzo-Indian Defence Other move orders, such as 1.c4 e6 2.Nc3 Nf6 3.d4 Bb4, are also feasible. In
294-480: The main move is 5.g3, which leads to a position that also arises from the Fianchetto Variation. 5.g3 cxd4 6.Nxd4 0-0 7.Bg2 d5 8.cxd5 Nxd5 can be considered the main line. Black has dissolved White's centre, but the bishop on g2 exerts pressure on the black queenside, which White may augment with 9.Qb3. This line can also arise from the Bogo-Indian Defence (1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+) if White blocks
315-523: The more open type of position which will ensue. 4...Nc6 is the Taimanov Variation , named after Russian GM Mark Taimanov . Black prepares to play ...e5, which may be preceded by...d5 and ...dxc4, or ...d6. The variation was tried several times by the young Bobby Fischer , and has long been favoured by GM Nukhim Rashkovsky . Black's most flexible and frequently played response is 4...0-0. The main line continues 5.Bd3 d5 6.Nf3 c5 7.0-0, reaching
336-488: The position in the diagram. White has completed their kingside development, while Black has claimed their share of the centre. At this point, the most important continuations are: After 7...dxc4 8.Bxc4, Black also has two rare alternatives on their eighth move worth mentioning: 8...Qe7 intending ...Rd8 is the Smyslov Variation , invented by former world champion Vasily Smyslov , and 8...Bd7 followed by ...Bc6
357-645: The purely descriptive Three Knights Variation . White develops the knight to a natural square and waits to see Black's reply. 4...d5 transposes to the Ragozin Defence of the Queen's Gambit Declined and 4...b6 5.Bg5 Bb7 transposes to the Nimzo/Queen's Indian hybrid line, so 4...c5 is the most common move that stays within Nimzo-Indian territory. Now 5.e3 transposes to the Rubinstein System, but
378-510: The spirit of the Nimzo-Indian: Black fianchettoes their light-squared bishop to increase their control over e4. White usually continues 5.Ne2, avoiding the doubled pawns, or 5.Bd3, continuing their development (5.Nf3 usually transposes to 5.Bd3). The main variations emerging from these moves are: The Classical or Capablanca Variation was popular in the early days of the Nimzo-Indian, and though eventually superseded by 4.e3 it
399-401: The theory and practice of this line at top level during their careers. White continues their development before committing to a definite plan of action. In reply, Black has three main moves to choose from: 4...0-0, 4...c5, and 4...b6. In addition, Black sometimes plays 4...d5 or 4...Nc6. The move 4...d5 can transpose to lines arising from 4...0-0, but White has the extra option of 5.a3 (known as
420-508: The threatened 4.e4 and seeks to inflict doubled pawns on White. White will attempt to create a pawn centre and develop their pieces to prepare for an assault on the Black position. Black's delay in committing to a pawn structure makes the Nimzo-Indian (sometimes colloquially referred to as the "Nimzo") a very flexible defence to 1.d4 . It can also transpose into lines of the Queen's Gambit or Queen's Indian Defence . The Nimzo-Indian
441-558: Was revived in the 1990s; it is now just as popular as the Rubinstein. White aims to acquire the two bishops without compromising their pawn structure. The drawback is that the queen will move at least twice within the opening moves and that White's kingside development is delayed. Thus, even though White possesses the bishop pair, it is usually advisable for Black to open the game quickly to exploit their lead in development. Black has four common replies to 4.Qc2. These include 4...0-0, 4...c5, 4...d5, and 4...Nc6 (4...d6 intending ...Nbd7 and ...e5
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