The opening is the initial stage of a chess game. It usually consists of established theory . The other phases are the middlegame and the endgame . Many opening sequences, known as openings , have standard names such as " Sicilian Defense ". The Oxford Companion to Chess lists 1,327 named openings and variants, and there are many others with varying degrees of common usage.
125-467: The English Opening is a chess opening that begins with the move: A flank opening , it is the fourth most popular and, according to various databases, one of the four most successful of White's twenty possible first moves. White begins the fight for the centre by staking a claim to the d5-square from the wing, in hypermodern style. Although many lines of the English have a distinct character,
250-479: A kingside pawn, tends to hold the initiative on that side of the board. However, 1...c5 does little for Black's development , unlike moves such as 1...e5, 1...g6, or 1...Nc6, which either develop a minor piece or prepare to do so. In many variations of the Sicilian, Black makes a number of further pawn moves in the opening (for example, ...d6, ...e6, ...a6, and ...b5). Consequently, White often obtains
375-535: A Slav -like system consisting of c6 and d5, a direct King's Indian Defence setup with Nf6, g6, Bg7, 0-0, after which c5 and e5 are eschewed, or 1...f5, which usually transposes to a Dutch Defence once White plays d4. All irregular responses such as 1...b6 and 1...g5 are also lumped into this third broad category. If White plays an early d4, the game will usually transpose into either the Queen's Gambit or an Indian Defence . For example, after 1.c4 Nf6 2.Nc3 g6 3.d4 d5
500-408: A bishop). The oldest openings in chess follow 1.e4. Bobby Fischer rated 1.e4 as "Best by test." On the downside, 1.e4 places a pawn on an undefended square and weakens d4 and f4. If Black mirrors White's move and replies with 1...e5, the result is an open game. The most popular second move for White is 2.Nf3 attacking Black's king pawn, preparing for a kingside castle, and anticipating the advance of
625-540: A bit, but they only address center control peripherally and are slower than the more popular openings. The eleven remaining possibilities are rarely played at the top levels of chess. Of these, the best are merely slow such as 1.c3, 1.d3, and 1.e3. Worse possibilities either ignore the center and development such as 1.a3, weaken White's position (for instance, 1.f3 and 1.g4), or place the knights on poor squares (1.Na3 and 1.Nh3). Black has twenty complementary responses to White's opening move. Many of these are mirror images of
750-477: A first-class defence. ... [It] is too defensive. There are too many holes created in the Pawn line. Command of the field, especially in the centre, is too readily given over to the invading force." Siegbert Tarrasch wrote that 1...c5 "is certainly not strictly correct, for it does nothing toward development and merely attempts to render difficult the building up of a centre by the first player. ... The Sicilian Defence
875-578: A game begins to deviate from known opening theory , the players are said to be "out of book". In some openings, book lines have been worked out for over 30 moves, such as some lines in the classical King's Indian Defense and in the Najdorf Variation of the Sicilian Defense. Professional chess players spend years studying openings, and they continue doing so throughout their careers as opening theory continues to evolve. Players at
1000-514: A game of chess. Both Holmes and Moriarty eventually play the final moves blindfolded by citing out the last moves in descriptive notation (rather than algebraic , as the former was contemporary in the late 19th century), ending in Holmes checkmating Moriarty, just as Watson foils Moriarty's plans. 1.c4 is also used in Pawn Sacrifice by Bobby Fischer in the climactic game six of
1125-493: A kingside pawn storm , via f4 and f3 (supporting the advance of g4). Black meets 7.Nf3 with 7...Be7 8.Bc4 0-0 9.0-0 Be6 10.Bb3 Qc7, where he has achieved a comfortable position. Formerly, 6.Bg5 e6 7.f4 was the main line of the Najdorf, when White threatens to attack the pinned knight with 8.e5. Black can simply break the pin with 7...Be7, when White usually plays 8.Qf3 and 9.0-0-0. Some of Black's alternatives are 7...Qb6,
1250-399: A large center with the goal of attacking it with pieces. Other semi-open games have been studied but are less common; see Semi-Open Game for details. The openings classified as closed games begin 1.d4 d5. The move 1.d4 offers the same benefits to development and center control as does 1.e4, but unlike with King Pawn openings where the e4-pawn is undefended after the first move, the d4-pawn
1375-508: A later c2-c4, or interpose a check with 5.Bb5+ Nbd7 6.Bd3 or 5.Bb5+ Bd7 6.Bxd7+ Nbxd7. The Najdorf Variation is Black's most popular system in the Sicilian Defence. Najdorf's intention with 5...a6 was to prepare ...e5 on the next move to gain space in the centre. The immediate 5...e5?! is met by 6.Bb5+!, when Black must either play 6...Bd7 or 6...Nbd7. The former allows White to exchange off Black's light-squared bishop, after which
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#17327986828031500-435: A lead in development and extra kingside space, which White can use to begin a kingside attack. This is counterbalanced by Black's central pawn majority, created by the trade of White's d-pawn for Black's c-pawn, and the open c-file, which Black uses to generate queenside counterplay and even a queenside attack if White decides to castle there. Black's most common move after 2.Nf3 is 2...d6 which prepares ...Nf6 to attack
1625-596: A lead in development. The move fell out of use, however, once it was determined that White kept the advantage in these lines. Another fifth move alternative for Black is 5...Nf6, which can transpose into the Sveshnikov Variation after 6.N1c3 or 6.Bg5 d6 7.N1c3. Only in the late 1980s did Black players revive 4...e5 with the intention of meeting 5.Nb5 with 5...d6: this is the Kalashnikov Variation. The ideas in this line are similar to those in
1750-471: A line played several times by Mikhail Botvinnik in 1958, in his final match for the world championship with Vasily Smyslov . Instead of playing an early d4, White can also play Nf3 and fianchetto the king's bishop (g3 and Bg2), transposing into a Réti Opening. Also, after 1.c4 c6, White can transpose into the Polish Opening , Outflank Variation, by playing 2.b4 !? , which can be used as
1875-566: A number of independent lines. There are a few ways for either side to deviate from the sequence in the heading. After 3...cxd4, White occasionally plays 4.Qxd4, the Chekhover Variation , intending to meet 4...Nc6 with 5.Bb5 Bd7 6.Bxc6, when White hopes that the lead in development compensates for Black's bishop pair. Another unusual sideline is 3...cxd4 4.Nxd4 Nf6 5.f3!?, the Prins Variation, which by delaying Nc3 maintains
2000-588: A player has specialized in is called an opening repertoire. The main elements a player needs to consider in a repertoire are: A very narrow repertoire allows for deeper specialization but also makes a player less flexible to vary against different opponents. In addition, opponents may find it easier to prepare against a player with a narrow repertoire. The main openings in a repertoire are usually reasonably sound; that is, they should lead to playable positions even against optimal counterplay. Unsound gambits are sometimes used as surprise weapons, but are unreliable for
2125-501: A quick attack." Grandmaster Jonathan Rowson considered why the Sicilian is the most successful response to 1.e4, even though 1...c5 develops no pieces and the pawn on c5 controls only d4 and b4. Rowson writes: To my mind there is quite a straightforward explanation. To profit from the initiative granted by the first move , White has to make use of his opportunity to do something before Black has an equal number of opportunities of his own. However, to do this, he has to make "contact" with
2250-400: A rook or queen on that file to support the queenside counterplay . In many variations, White castles queenside to exploit attacking chances on the kingside at the cost of moving his king to the flank where Black has a spatial advantage. The Sicilian Defence was analysed by Giulio Polerio in his 1594 manuscript on chess, though he did not use the term 'Sicilian Defence'. It was later
2375-523: A stable repertoire. Repertoires often change as a player develops, and a player's advancement may be stifled if the opening repertoire does not evolve. Some openings that are effective against amateur players are less effective at the master level. For example, Black obtains active play in return for a pawn in the Benko Gambit ; amateur players may have trouble defending against Black's activity, while masters are more skilled at defending and making use of
2500-426: A substantial lead in development and dangerous attacking chances. Meanwhile, advancing a queenside pawn has given Black a spatial advantage there and provides a basis for future operations on that flank. Often, Black's c5-pawn is traded for White's d4-pawn in the early stages of the game, granting Black a central pawn majority . The pawn trade also opens the c- file for Black, who can place
2625-472: A surprise weapon if Black does not know very much about the Polish Opening. The many different transpositional possibilities available to White make the English a slippery opening for Black to defend against, and make it necessary for them to consider carefully what move order to employ. For instance, if Black would like to play a Queen's Gambit Declined (QGD), the most accurate move order to do so
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#17327986828032750-601: A well-prepared opponent playing Black can equalize fairly easily. The Stonewall is characterized by the White pawn formation on c3, d4, e3, and f4, and can be achieved by several move orders and against many different Black setups. The diagram positions and the move sequences given below are typical. Other closed openings have been studied but are less common; see Closed Game for details. The Indian systems are asymmetrical defenses to 1.d4 that employ hypermodern chess strategy. Fianchettos are common in many of these openings. As with
2875-693: Is 1...e6 2.d4 d5. (Of course, White can again play the Réti instead with 2.Nf3 d5 3.b3.) If Black plays instead 1...Nf6 2.Nc3 e6, White can avoid the QGD by playing 3.e4, the Flohr–Mikenas Attack . The Encyclopaedia of Chess Openings has classified the English Opening under the codes A10 through A39: The English Opening is used by Professor Moriarty in the film Sherlock Holmes: A Game of Shadows as he and Holmes discuss their competing plans over
3000-576: Is 2.c4, grabbing a larger share of the center and allowing the move Nc3, to prepare for moving the e-pawn to e4 without blocking the c-pawn. Black's most popular replies are: Advocated by Nimzowitsch as early as 1913, the Nimzo-Indian Defense was the first of the Indian systems to gain full acceptance. It remains one of the most popular and well-respected defenses to 1.d4 and White often adopts move orders designed to avoid it. Black attacks
3125-482: Is a chess opening that begins with the following moves: The Sicilian is the most popular and best-scoring response to White's first move 1.e4. The opening 1.d4 is a statistically more successful opening for White because of the high success rate of the Sicilian defence against 1.e4. New In Chess stated in its 2000 Yearbook that, of the games in its database, White scored 56.1% in 296,200 games beginning 1.d4, but 54.1% in 349,855 games beginning 1.e4, mainly because
3250-553: Is another broad category of defence, introduced by the response 1...e5. Note again, that Black can delay playing ...e5, for example 1.c4 Nf6 2.Nc3 Nc6 3.Nf3 e5 whereupon even though ...e5 has been delayed, once it is played the defence is classified as a Reversed Sicilian. After 1...e5, White has Black's position in the Sicilian but with an extra tempo . This is often called the Reversed Sicilian , though others call it
3375-448: Is characterized by White playing 1.Nf3, fianchettoing one or both bishops, and not playing an early d4 (which would generally transpose into one of the 1.d4 openings). The King's Indian Attack (KIA) is a system of development that White may use in reply to almost any Black opening moves. The characteristic KIA setup is 1.Nf3, 2.g3, 3.Bg2, 4.0-0, 5.d3, 6.Nbd2, and 7.e4, although these moves may be played in many different orders. In fact,
3500-493: Is common to divide each of them further. One reasonable way to group the openings is: The Indian systems (1.d4 Nf6) are the most important of the Semi-Closed Games, and warrant separate treatment. White starts by playing 1.e4 (moving their king pawn two spaces). This is the most popular opening move and it has many strengths—it immediately works on controlling the center, and it activates two pieces (the queen and
3625-539: Is considered solid, safe, and perhaps somewhat drawish . Black often chooses the Queen's Indian when White avoids the Nimzo-Indian by playing 3.Nf3 instead of 3.Nc3. Black constructs a sound position that makes no positional concessions, although sometimes it is difficult for Black to obtain good winning chances. Karpov was a leading expert in this opening. The Modern Benoni is a risky attempt by Black to unbalance
3750-491: Is excellent for a strong player who is prepared to take risks to force a win against an inferior opponent. Against best play, however, it is bound to fail." The Sicilian was not seen even once in the 75 games played at the great St. Petersburg 1914 tournament . Nonetheless, some leading players, such as Emanuel Lasker (World Champion from 1894 to 1921), Frank Marshall , Savielly Tartakower , and Aron Nimzowitsch , and later Max Euwe (World Champion from 1935 to 1937) played
3875-667: Is ferociously complicated, since the players castle on opposite wings and the game becomes a race between White's kingside attack and Black's queenside counterattack. White's most important alternative to the Yugoslav Attack is 6.Be2, the Classical Variation of the Dragon which leads to a less ferocious game. This variation can arise from two different move orders: 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6, or 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6. Unlike
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4000-619: Is named after the Catalonia region. 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 named for the player who was the first to popularize it or to publish analysis of it. Eponymic openings include the Ruy Lopez , Alekhine's Defense , Morphy Defense , and the Réti Opening . Some opening names honor two people, such as
4125-488: Is often known as a prepared variation , a powerful weapon in top-class competition. Whether they are trying to gain the upper hand as White, or to equalize as Black or to create dynamic imbalances, players generally devote a lot of attention in the opening stages to the following strategies: Apart from these ideas, other strategies used in the middlegame may also be carried out in the opening. These include preparing pawn breaks to create counterplay, creating weaknesses in
4250-513: Is pressing for the win at no risk. A quick draw is possible after 9.Nd5 Qa5+!? 10.Bd2 (in order to prevent 10...Nxe4) 10...Qd8 11.Bg5 Qa5+ etc. In order to avoid this, White can play 11.Nxf6+ or 11.c4. Like the standard Dragon Variation, Black develops the bishop to g7 in the Accelerated Dragon. The difference is that Black avoids playing ...d7–d6 and can later play ...d7–d5 in one move if possible. For example, if White tries to play in
4375-536: Is protected by White's queen. This slight difference has a tremendous effect on the opening. For instance, whereas the King's Gambit is rarely played today at the highest levels of chess, the Queen's Gambit remains a popular weapon at all levels of play. Also, compared with the King Pawn openings, transpositions among variations are more common and critical in the closed games. The most important closed openings are in
4500-480: Is somewhat inflexible because it blocks White's c-pawn; also, after 1...d5 the knight is liable to be driven to an inferior square by ...d4. (Note that after 1.Nf3 the analogous 1...e5? loses a pawn.) Bird's Opening , 1.f4, addresses center control but not development and weakens the king position slightly. The Sokolsky Opening 1.b4 and the King's and Queen's fianchettos : Larsen's Opening 1.b3 and 1.g3 aid development
4625-606: Is still played occasionally at the top level by Short and others. Another fairly common opening is the Benoni Defense , which may become very wild if it develops into the Modern Benoni , though other variations are more solid. Several other uncommon semi-closed openings have been named and studied, see Semi-Closed Game for details. The flank openings are the group of White openings typified by play on one or both flanks. White plays in hypermodern style, attacking
4750-407: Is that playing first gives White a slight initial advantage ; for example, White will be the first to attack if the game opens symmetrically (Black mirrors White's moves). Since about the 1950s another objective has gradually become more dominant. According to IM Jeremy Silman , the purpose of the opening is to create dynamic imbalances between the two sides, which will determine the character of
4875-488: Is the best possible reply to 1.P-K4, [1.e4 in algebraic notation] 'as it renders the formation of a centre impracticable for White and prevents every attack'." The opening fell out of favour in the later part of the nineteenth century, when some of the world's leading players rejected it. Paul Morphy , the world's best player in the late 1850s, decried "that pernicious fondness for the Sicilian Defense ... extending from about 1843 to some time after 1851". Wilhelm Steinitz ,
5000-462: Is usually done by transpositions , in which a game that apparently starts with one opening can reach a position that is normally produced by a different opening. Most players realize after a while that they play certain types of positions better than others, and that the amount of theory they can learn is limited. Therefore, most players specialize in certain openings where they know the theory and that lead to positions they favor. The set of openings
5125-507: The Encyclopaedia of Chess Openings . Although these codes are invaluable for the serious study of the chess opening, they are not very practical for a broad survey of the chess opening as the codes obscure common structural features between related openings. A simple descriptive categorization of the chess opening is King's Pawn Openings , Queen's Pawn Openings , and Others. Since these categories are still individually very large, it
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5250-454: The 1972 World Chess Championship versus Boris Spassky . 1.Na3: Durkin 1.a3: Anderssen 1.b3: Nimzowitsch-Larsen 1.Nc3: Dunst 1.c3: Saragossa 1.d3: Mieses 1.e3: Van 't Kruijs 1.Nf3: Zukertort 1.f3: Barnes 1.g3: Benko 1.Nh3: Amar 1.h3: Clemenz Chess opening Opening moves that are considered standard are referred to as "book moves", or simply "book". When
5375-745: The Alekhine and the Scandinavian have made occasional appearances in World Chess Championship games. The Sicilian and French Defenses lead to unbalanced positions that can offer exciting play with both sides having chances to win. The Caro–Kann Defense is solid as Black intends to use their c-pawn to support their center (1.e4 c6 2.d4 d5). Alekhine's, the Pirc and the Modern are hypermodern openings in which Black tempts White to build
5500-597: The Caro–Kann and the Smith–Morra . A few opening names are purely descriptive, such as Giuoco Piano ( Italian : quiet game ), Two Knights Defense , Four Knights Game and Bishop's Opening . Some openings have been given fanciful names, often names of animals. This practice became more common in the 20th century. By then, most of the more common and traditional sequences of opening moves had already been named, so these tend to be unusual or recently developed openings like
5625-697: The Orangutan , Hippopotamus, Elephant, Hedgehog, and, most recently, the Cow. A few are given humorous names, such as the Monkey's Bum and the Toilet Variation . Opening names usually include one of the terms "opening", "variation", "defense", "gambit" etc, however the terminology is inconsistent and imprecise, and is not a useful basis for classification. Broadly, these terms are used as follows: Chess openings are primarily categorized by move sequences. In
5750-547: The Palma de Mallorca Interzonal in 1970, and in his world championship match against Boris Spassky . Opening theoreticians who write on the English Opening divide it into three broad categories, generally determined by Black's choice of defensive setup. The Symmetrical Defence (classified A30–39 in ECO ) is 1...c5, and is so named because both of the c-pawns are advanced two squares, maintaining symmetry. Note that Black can reach
5875-566: The Poisoned Pawn Variation popularized by Fischer , Gelfand's 7...Nbd7, and 7...b5, the Polugaevsky Variation, which has the tactical point 8.e5 dxe5 9.fxe5 Qc7! 10.exf6 Qe5+ winning the bishop in return for the knight. A modern alternative to 6...e6 is 6...Nbd7. White has other choices on the sixth move. 6.Be2 prepares to castle kingside and is a quieter alternative compared to 6.Be3 and 6.Bg5. Efim Geller
6000-460: The Queen's Gambit Declined . When Black plays 2...Nf6, these lines are often called the Anti-Benoni, since these positions are often reached after the transposition 1.d4 Nf6 2.c4 c5 3.Nf3, where White avoided the Benoni Defense that would arise after 3.d5. After 3...cxd4 4.Nxd4, Black could follow up with 4...e5 forcing White's knight to go to the queenside and avoiding the transpositions to
6125-419: The Ruy Lopez or Spanish Opening . Opening theory was studied more scientifically from the 1840s on, and many opening variations were discovered and named in this period and later. Opening nomenclature developed haphazardly, and most names are historical accidents not based on systematic principles. In the early 1930s, the nascent FIDE embarked on a project to standardize opening nomenclature, culminating in
6250-679: The Scheveningen Variation with 5...d6, play 5...Nc6, the Four Knights Variation or 5...Bb4, the Pin Variation . Named after Mark Taimanov , the Taimanov Variation can be reached through 2...e6 3.d4 cxd4 4.Nxd4 Nc6 or 2...Nc6 3.d4 cxd4 4.Nxd4 e6. Black develops the knight to a natural square and keeps options open regarding the placement of the other pieces. One of the ideas of this system
6375-626: The Taimanov Variation , 4...Qb6, the Grivas Variation, and 4...d6. After 4...Nf6, White usually replies 5.Nc3. Black can play 5...d6, transposing to the Classical Variation ; 5...e5, the Sveshnikov Variation ; or 5...e6, transposing to the Four Knights Variation . The Sveshnikov Variation was pioneered by Evgeny Sveshnikov and Gennadi Timoshchenko [ ru ] in the 1970s. Before their efforts,
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#17327986828036500-663: The Vienna Game (2.Nc3), the Bishop's Opening (2.Bc4), and the King's Gambit (2.f4). These openings have some similarities with each other, in particular the Bishop's Opening frequently transposes to variations of the Vienna Game. The King's Gambit was extremely popular in the 19th century. White sacrifices a pawn for quick development and to divert a black pawn from the center. The Vienna Game also frequently features attacks on
6625-764: The ...b5 pawn push. This plan of 5...a6 followed by ...e5 represents Black's traditional approach in the Najdorf Variation. Later, Garry Kasparov also adopted the 5...a6 move order, but with the idea of playing ...e6 rather than ...e5. Kasparov's point is that the immediate 5...e6 (the Scheveningen Variation, discussed below) allows 6.g4, which is White's most dangerous line against the Scheveningen. By playing 5...a6 first, Black temporarily prevents White's g4 thrust and waits to see what White plays instead. Often, play will eventually transpose to
6750-413: The ...d7–d5 and ...b7–b5 pawn thrusts. Generally, this line is less tactical than many of the other Sicilian variations, and play involves much strategic maneuvering on both sides. After 5.c4, the main line runs 5...Bg7 6.Be3 Nf6 7.Nc3 and now 7...0-0 or 7...Ng4 is most frequently played. The Kalashnikov Variation ( ECO code B32) is a close relative of the Sveshnikov Variation , and is sometimes known as
6875-526: The 1930s), or queenside with 7.Be3 Be7 (or 7...a6) 8.Qe2 and 9.0-0-0 (the Velimirović Attack). Instead of 6...e6, Black can also try Benko's move 6...Qb6, which forces White to make a decision over the d4-knight. This typically leads into more positional lines than the razor-sharp, highly theoretical Sozin and Velimirović variations. White's third most common move is 6.Be2, ( ECO codes B58–B59), after which Black can remain in independent variations with
7000-592: The Black center by means of a f2–f4 pawn advance. In the Center Game (2.d4) White immediately opens the center but if the pawn is to be recovered after 2...exd4, White must contend with a slightly premature queen development after 3.Qxd4. An alternative is to sacrifice one or two pawns, for example in the Danish Gambit . Many other variations after 1.e4 e5 have been studied; see Open Game for details. In
7125-595: The Boleslavsky Variation 6...e5, named after Isaac Boleslavsky . The old main line 7.Nb3 is now less popular than the modern 7.Nf3, after which the game usually continues 7...h6 8.0-0 Be7 9.Re1 0-0 10.h3. Black can also transpose to the Scheveningen Variation with 6...e6; or to the Classical Variation of the Dragon with 6...g6. Other responses by White to the Classical include 6.Be3, 6.f3, and 6.g3. In
7250-609: The Catalan System. The most important Indian Defenses are listed below, but many others have been studied and played; see Indian Defense for details. Of the defenses to 1.d4 other than 1...d5 and 1...Nf6, the most important are the Dutch Defense and the Benoni Defense . The Dutch, an aggressive defense adopted for a time by World Champions Alekhine and Botvinnik , and played by both Botvinnik and challenger David Bronstein in their 1951 world championship match ,
7375-471: The Hungarian Attack or Perenyi Attack. The most popular response from Black after 6.Be3 is 6...e5, seizing quick initiative by threatening the d4-knight. From here, the white knight has two sensible retreats: a) 7.Nb3, the more popular approach, is met with 7...Be6, and Black develops normally (...Be7, ...Nbd7, ...Rc8, ...Qc7, ...0-0, ...b5). b) 7.Nf3 is less common as it delays the possibility of
7500-498: The Italian chess players Giulio Polerio and Gioachino Greco . By advancing the c- pawn two squares, Black asserts control over the d4-square and begins the fight for the centre of the board . The move resembles 1…e5 , the next most common response to 1.e4, in that respect. Unlike 1...e5, however, 1...c5 breaks the symmetry of the position, which strongly influences both players' future actions. White, having pushed
7625-589: The KIA is probably most often reached after 1.e4 when White uses it to respond to a Black attempt to play one of the semi-open games such as the Caro–Kann, French, or Sicilian, or even the open games which usually come after 1.e4 e5. Its greatest appeal may be that by adopting a set pattern of development, White can avoid the large amount of opening study required to prepare to meet the many different possible Black replies to 1.e4. Sicilian Defence The Sicilian Defence
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#17327986828037750-586: The King's English. Bruce Leverett, writing the English chapter in MCO-14 , stated, "It is natural to treat the English as a Sicilian reversed, but the results are often surprising—main lines in the Sicilian Defence correspond to obscure side variations in the English, and vice versa." The third broad category consists of the non-...e5 and non-...c5 responses, classified A10–19 in ECO . Most often these defences consist of Nf6, e6, and d5 or Bb4 systemic responses by Black, or
7875-620: The Neo-Sveshnikov. The move 4...e5 has had a long history; Louis-Charles Mahé de La Bourdonnais used it in his matches against Alexander McDonnell in 1834, and it was also popular for a short time in the 1940s. These earlier games focused on the Löwenthal Variation (similar to the Kalashnikov but the reply to 5.Nb5 is 5...a6) with 4...e5 5.Nb5 a6 6.Nd6+ Bxd6 7.Qxd6 Qf6, where Black gives up the two bishops to achieve
8000-439: The Queen's Gambit family (White plays 2.c4). The Queen's Gambit is somewhat misnamed, since White can always regain the offered pawn if desired. In the Queen's Gambit Accepted , Black plays ...dxc4, giving up the center for free development and the chance to try to give White an isolated queen pawn with a subsequent ...c5 and ...cxd4. White will get active pieces and possibilities for the attack. Black has two popular ways to decline
8125-493: The Queen's Gambit other than 2...dxc4, 2...c6, and 2...e6 are uncommon. The Colle System and Stonewall Attack are classified as Queen's Pawn Games because White plays d4 but not c4. They are also examples of Systems , rather than specific opening variations. White develops aiming for a particular formation without great concern over how Black chooses to defend. Both systems are popular with club players because they are easy to learn, but are rarely used by professionals because
8250-581: The Scheveningen Variation, Black is content to place the e-pawn on e6, where it guards the d5-square, rather than play the space-gaining ...e5. Moving the e-pawn also prepares ...Be7 followed by kingside castling. In view of this, Paul Keres introduced 6.g4, the Keres Attack, in 1943. White intends to drive away the black knight with g5. If Black prevents this with 6...h6, which is the most common answer, White has gained kingside space and discouraged Black from castling on that side, and may later play Bg2. If
8375-485: The Scheveningen Variation. Currently, White's most popular weapon against the Najdorf is 6.Be3. This is called the English Attack , because it was popularized by English grandmasters Murray Chandler , John Nunn and Nigel Short in the 1980s. White's idea is to play f3, Qd2, 0-0-0 and g4 in some order. Black can respond with 6...e6, 6...e5 or 6...Ng4. A related attacking idea for White is 6.Be3 e6 7.g4, known as
8500-536: The Sicilian held White to a 52.3% score in 145,996 games. 17% of all games between grandmasters , and 25% of the games in the Chess Informant database, begin with the Sicilian. Grandmaster John Nunn attributes the Sicilian Defence's popularity to its "combative nature": "in many lines Black is playing not just for equality, but for the advantage. The drawback is that White often obtains an early initiative, so Black has to take care not to fall victim to
8625-481: The Sicilian in 1948, "Black gives up control of the centre, neglects his development, and often submits to horribly cramped positions. How can it be good? Yet, the brilliant wins by White are matched by equally brilliant wins by Black; time and again the Black structure has been able to take everything and come back for more." Later, Bent Larsen , Ljubomir Ljubojević , Lev Polugaevsky , Leonid Stein , Mark Taimanov , and Mikhail Tal all made extensive contributions to
8750-410: The Sicilian in their opening repertoire. In 1990, the authors of Modern Chess Openings (13th edition) noted that "in the twentieth century the Sicilian has become the most played and most analysed opening at both the club and master levels." In 1965, in the tenth edition of that book, grandmaster Larry Evans observed that "The Sicilian is Black's most dynamic, asymmetrical reply to 1.P-K4. It produces
8875-561: The Sicilian or the QGD; however, White could avoid the line by first playing 3.Nc3 and then play 4.d4, if Black doesn't play 3...d5 (see below). Same as above, the position could transpose into a Queen's Gambit Declined or an Open Sicilian involving the Maróczy Bind. There are several types of positions that can arise from the Symmetrical Defence. Among the ideas are: The Reversed Sicilian (classified A20–29 in ECO )
9000-422: The Sicilian. Even Capablanca and Tarrasch, despite their critical comments, occasionally played the opening. It was played six times (out of 110 games) at New York 1924 . The following year, the authors of Modern Chess Openings (4th edition) wrote, "The Sicilian has claims to be considered as the best of the irregular defences to 1.P-K4 at Black's disposal, and has been practised with satisfactory results by
9125-545: The Sveshnikov – Black accepts a backward pawn on d6 and weakens the d5-square but gains time by chasing the knight. The difference between the two variations is that Black has not developed the knight to f6 and White has not brought the knight to c3, so both players have extra options. Black may forego ...Nf6 in favour of ...Ne7, e.g. after 6.N1c3 a6 7.Na3 b5 8.Nd5 Nge7, which avoids White's plan of Bg5 and Bxf6 to inflict doubled f-pawns on Black. Or, Black can delay bringing out
9250-465: The Symmetrical Defence through many move orders by deferring ...c5, and often does. For example, 1.c4 Nf6 2.Nc3 (or 2.Nf3) c5. Either player may make an early break in the centre with the d-pawn. Similar to the Open Sicilian , an early d2–d4 for White can arise on the third move in the Symmetrical Defence with 2.Nf3, where Black has chosen one of 2...Nc6, 2...e6, 2...d6, or 2...g6. After 3.d4,
9375-526: The bishop to an aggressive square. Black usually plays 6...e6 ( ECO B88 transposed) to limit the range of White's bishop, but White can eventually put pressure on the e6-pawn by pushing the f-pawn to f5 (pawn-based attack beginning with f4). White can either castle kingside with 7.Bb3 a6 8.0-0 (the Fischer–Sozin Attack, named after Bobby Fischer and Russian master Veniamin Sozin , who originated it in
9500-408: The black position. The first point of contact usually comes in the form of a pawn exchange, which leads to the opening of the position. ... So the thought behind 1...c5 is this: "OK, I'll let you open the position, and develop your pieces aggressively, but at a price – you have to give me one of your center pawns." The earliest recorded notes on the Sicilian Defence date back to the late 16th century by
9625-506: The center from the flanks with pieces rather than occupying it with pawns. These openings are played often, and 1.Nf3 and 1.c4 trail only 1.e4 and 1.d4 in popularity as opening moves. If White opens with 1.Nf3, the game often becomes one of the d4 openings (closed games or semi-closed games) by a different move order (this is called transposition ), but unique openings such as the Réti and King's Indian Attack are also common. The Réti itself
9750-524: The center with pieces and is prepared to trade a bishop for a knight to weaken White's queenside with doubled pawns . The King's Indian Defense is aggressive, somewhat risky, and generally indicates that Black will not be satisfied with a draw. Although it was played occasionally as early as the late 19th century, the King's Indian was considered inferior until the 1940s, when it was taken up by Bronstein , Boleslavsky , and Reshevsky . Despite being Fischer 's favored defense to 1.d4, its popularity faded in
9875-508: The closed games, transpositions are important and many of the Indian defenses can be reached by several different move orders. Although Indian defenses were championed in the 1920s by players in the hypermodern school, they were not fully accepted until Soviet players showed in the late 1940s that these systems are sound for Black. Since then, Indian defenses have been the most popular Black replies to 1.d4 because they offer an unbalanced game with chances for both sides. The usual White second move
10000-413: The club level also study openings, but the importance of the opening phase is less there since games are rarely decided in the opening. The study of openings can become unbalanced if it is to the exclusion of tactical training and middlegame and endgame strategy. A new sequence of moves in the opening is referred to as a theoretical novelty . When kept secret until used in a competitive game, it
10125-438: The complications after 6.g4 are not to White's taste, a major alternative is 6.Be2, a typical line being 6...a6 (this position can be reached from the Najdorf via 5...a6 6.Be2 e6) 7.0-0 Be7 8.f4 0-0. 6.Be3 and 6.f4 are also common. While theory indicates that Black can hold the balance in the Keres Attack, players today often prefer to avoid it by playing 5...a6 first, an idea popularized by Kasparov. However, if determined to play
10250-421: The d5-square becomes very weak; but the latter allows 7.Nf5, when Black can only save the d-pawn by playing the awkward 7...a6 8.Bxd7+ Qxd7. In both cases, White's game is preferable. Thus, by playing 5...a6, Black deprives White of the check on b5, so that ...e5 might be possible next move. In general, 5...a6 also prevents White's knights from using the b5-square, and helps Black create queenside play by preparing
10375-513: The d6-pawn backward and the d5-square weak. However, in return, Black gets a foothold in the centre and gains time on White's knight, which has been driven to the edge of the board on a3. Top players who have used this variation include Magnus Carlsen , Vladimir Kramnik , Veselin Topalov , Teimour Radjabov , Boris Gelfand , Michael Adams and Alexander Khalifman , among many others. In the diagrammed position after 8...b5, White usually parries
10500-557: The doubled f-pawns in the main line of the opening. The opening was popularised when Sveshnikov saw its dynamic potential for Black in the 1970s and 80s. Today, it is extremely popular among grandmasters and amateurs alike. Though some lines still give Black trouble, it has been established as a first-rate defence. The main line after 5...e5 runs as follows: 6. Ndb5 6...d6 7. Bg5 7...a6 8. Na3 8...b5! The Sveshnikov Variation has become very popular in master level chess. Black's ...e5 push seems anti-positional: it has made
10625-400: The e-pawn without letting White push it to e5. The game usually continues 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3. Black can then choose between four major variations: the Najdorf ( 5...a6 ), Dragon ( 5...g6 ), Classical ( 5...Nc6 ), and Scheveningen ( 5...e6 ). The rare Kupreichik Variation (5...Bd7) may transpose to one of the more common variations such as the Classical or Dragon, but it may also lead to
10750-459: The effect of considerably strengthening White's attack, and the 'Sicilian' is now considered by most modern authorities to be a comparatively weak mode of play." Freeborough and Ranken , in their treatise Chess Openings: Ancient and Modern (1889, 1896), wrote that the Sicilian "had at one time the reputation of being the best reply to 1.P-K4 [1. e4], but this has not been confirmed by popular practice. Several eminent players have, however, held to
10875-537: The extra pawn. Some openings played between grandmasters are so complex and theoretical that amateur players will have trouble understanding them. An example is the Perenyi Attack of the Sicilian Defense (see diagram), which yields an immensely complicated and tactical position that even strong players have difficulty handling, and that is beyond the comprehension of most amateurs. Major changes in
11000-619: The first World Champion , also disliked the Sicilian and rejected it in favour of 1...e5. The death of the opening's two greatest proponents, Staunton and Anderssen, in 1874 and 1879 respectively, also contributed to its decline. It has been said that "these losses almost dealt a knockout blow to the Sicilian because it took a long time to find such important figures to carry the Sicilian's standard." George H. D. Gossip , in The Chess Player's Manual , first published in 1874, wrote, "Of late years ... discoveries have been made which have
11125-613: The g4 thrust, White can prepare it by responding to 5...a6 with 6.h3 or 6.Rg1. 2...Nc6 is a natural developing move and also prepares ...Nf6 (like 2...d6, Black stops White from replying e5). After 3.d4 cxd4 4.Nxd4, Black's most common move is 4...Nf6. Other important moves are 4...e6 (transposing to the Taimanov Variation ), 4...g6 (the Accelerated Dragon ) and 4...e5 (the Kalashnikov Variation ). Less common choices include 4...Qc7, which may later transpose to
11250-454: The gambit pawn or return it. The Catalan Opening is characterized by White forming a pawn center at d4 and c4 and fianchettoing their king's bishop. It resembles a combination of the Queen's Gambit and Réti Opening . Since the Catalan can be reached from many different move orders, (one Queen's Gambit Declined -like move sequence is 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3), it is sometimes called
11375-482: The game has transposed into the Grünfeld Defence , usually reached by the move order 1.d4 Nf6 2.c4 g6 3.Nc3 d5. White can, however, also play 1.c4 Nf6 2.Nc3 g6 3.e4, making it impossible for Black to reach a Grünfeld, instead more or less forcing them into lines of the King's Indian Defence with 3...d6. Black also cannot force a Grünfeld with 1.c4 Nf6 2.Nc3 d5, since White can deviate with 3.cxd5 Nxd5 4.g3,
11500-450: The game often continues 9...Be7 10.Bxf6 Bxf6 11.c3. This allows White to maintain the knight on d5 by trading off Black's knight on f6, and prepares to bring the knight on a3 back into play with the manoeuvre Na3–c2–e3. Another line is 10.Nxe7 Nxe7! (fighting for control of d5 and not fearing the doubled pawns) 11.Bxf6 gxf6. However, a recent development in the Sveshnikov has been 11.c4 (instead of c3), which often leads to positions where White
11625-532: The game usually continues with 3...cxd4 4.Nxd4. The games can give a large variety of positional and tactical ideas, and can transpose into variants of the Open Sicilian involving the Maróczy Bind , such as the Accelerated Dragon , Taimanov, Kan, or Kalashnikov Variations, if White plays e4 in a later move. If Black manages to play d5 before White plays e4, then the game could transpose into variants of
11750-490: The h8–a1 diagonal. It was named by Fyodor Dus-Chotimirsky in 1901, who noticed a resemblance between Black's kingside pawn structure (pawns on d6, e7, f7, g6 and h7) and the stars of the Draco constellation . White's most dangerous try against the Dragon is the Yugoslav Attack, characterised by 6.Be3 Bg7 7.f3 0-0 8.Qd2 Nc6, when 9.0-0-0, 9.Bc4 and 9.g4 are White's most common moves. This variation leads to extremely sharp play and
11875-399: The initial position, White has twenty legal moves. Of these, 1.e4, 1.d4, 1.Nf3, and 1.c4 are by far the most popular as these moves do the most to promote rapid development and control of the center. A few other opening moves are considered reasonable but less consistent with opening principles than the four most popular moves. The Dunst Opening , 1.Nc3, develops a knight to a good square, but
12000-552: The knight in favour of playing ...Be7–g5 or a quick ...f5. On the other hand, White has the option of 6.c4—the Maróczy Bind —which solidifies control of d5 and clamps down on ...b5, but leaves the d4-square slightly weak. Black's move 2...e6 gives priority to developing the dark-squared bishop. After 3.d4 cxd4 4.Nxd4, Black has three main moves: 4...Nc6 (the Taimanov Variation ), 4...a6 (the Kan Variation ) and 4...Nf6. After 4...Nf6 5.Nc3 (not 5.e5? Qa5+), Black can transpose to
12125-438: The leading players of the day." In this period Black's approach was usually slow and positional, and the all-out attacks by White that became common after World War II had not yet been developed. The fortunes of the Sicilian were further revived in the 1940s and 1950s by players such as Isaac Boleslavsky , Alexander Kotov , and Miguel Najdorf . Reuben Fine , one of the world's leading players during this time period, wrote of
12250-502: The mid-1970s. Kasparov 's successes with the defense restored the King's Indian to prominence in the 1980s. Ernst Grünfeld debuted the Grünfeld Defense in 1922. Distinguished by the move 3...d5, Grünfeld intended it as an improvement to the King's Indian which was not considered entirely satisfactory at that time. The Grünfeld has been adopted by World Champions Smyslov , Fischer, and Kasparov. The Queen's Indian Defense
12375-598: The middlegame and the strategic plans chosen by both sides. For example, in the main line of the Winawer Variation of the French Defense (1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3), White will try to use their bishop pair and space advantage to mount an attack on Black's kingside , while Black will seek simplifying exchanges (in particular, trading off one of White's bishops to blunt this advantage) and counterattack against
12500-489: The modern plan of Qd2 and 0-0-0 in the 1930s. White's pressure on the d6-pawn often compels Black to respond to Bxf6 with ...gxf6, rather than recapturing with a piece (e.g. the queen on d8) that also has to defend the d-pawn. This weakens Black's kingside pawn structure , but in return Black gains the two bishops and a central pawn majority. Another variation is 6.Bc4, the Sozin Variation ( ECO code B57). It brings
12625-405: The most popular first moves for White, but with one less tempo . Defenses beginning with 1...c6 and 1...e6, often followed by the center thrust 2...d5, are also popular. Defenses with an early ...d6 coupled with a kingside fianchetto are also commonly played. The most important scheme of classifying chess openings for serious players is by ECO code , a series of 500 opening codes assigned by
12750-530: The ninth edition of Modern Chess Openings , Walter Korn noted that the Sicilian "received three of its earliest practical tests, and a big boost in popularity, in the 1834 La Bourdonnais – McDonnell chess matches , 1843 Staunton – St. Amant match, and the London 1851 chess tournament ." Staunton wrote of the Sicilian, "In the opinion of Jaenisch and the German Handbuch , with which I coincide, this
12875-559: The opening is often used as a transpositional device in much the same way as 1.Nf3 – to avoid such highly regarded responses to 1.d4 as the Nimzo-Indian and Grünfeld Defences – and is considered reliable and flexible. The English derives its name from the leading 19th century English master Howard Staunton , who played it during his 1843 match with Saint-Amant and at London 1851 , the first international tournament. It did not inspire Staunton's contemporaries and caught on only in
13000-488: The opinion that it is quite trustworthy." The Sicilian continued to be shunned by most leading players at the start of the twentieth century, as 1...e5 held centre stage. José Raúl Capablanca , the World Champion from 1921 to 1927, famously denounced it as an opening where "Black's game is full of holes". Similarly, James Mason wrote, "Fairly tried and found wanting, the Sicilian has now scarcely any standing as
13125-408: The opponent's pawn structure, seizing control of key squares, making favorable exchanges of minor pieces (e.g. gaining the bishop pair), or gaining a space advantage, whether in the center or on the flanks. At higher levels of competition, for many years the main objectives of opening play were to obtain a better position when playing as White and to equalize when playing as Black. The idea behind this
13250-409: The option of setting up a Maróczy Bind formation with a later c2-c4. Black can avoid the Prins Variation by playing 3...Nf6, when 4.Nc3 cxd4 5.Nxd4 transposes to main lines. However, 3...Nf6 gives White an extra option in 4.dxc5!?, when Black can play either 4...Nxe4 or 4...Qa5+. White could also protect the pawn on e4 with 5.Bd3 which also allows the option of setting up a Maróczy Bind formation with
13375-498: The other major variations considered in this section, Black defers the development of the king's bishop in favour of bringing out the queen's knight. White's most common reply is 6.Bg5, the Richter–Rauzer Attack ( ECO codes B60–B69). The move 6.Bg5 was Kurt Richter 's invention, threatening to double Black's pawns after Bxf6 and forestalling the Dragon by rendering 6...g6 unplayable. After 6...e6, Vsevolod Rauzer introduced
13500-742: The pawn, the Slav (2...c6) and the Queen's Gambit Declined (2...e6). Both of these moves lead to an immense forest of variations that can require a great deal of opening study to play well. Among the many possibilities in the Queen's Gambit Declined are the Orthodox Defense, Lasker's Defense, the Cambridge Springs Defense , the Tartakower Variation, and the Tarrasch and Semi-Tarrasch Defenses. Black replies to
13625-497: The plan of playing 10...f5, followed by ...fxe4 and ...f5 with the second f-pawn, which would give them good control of the centre. An alternative plan is to play 10...Bg7 followed by ...Ne7 to immediately trade off White's powerful knight; this line is known as the Novosibirsk Variation. Instead of 9.Bxf6, White can also play 9.Nd5, which usually leads to quieter play. White decides not to double Black's f-pawns and
13750-436: The position and gain active piece play at the cost of allowing White a pawn wedge at d5 and a central majority. Tal popularized the defense in the 1960s by winning several brilliant games with it, and Fischer occasionally adopted it, with good results, including a win in his 1972 world championship match against Boris Spassky . Often Black adopts a slightly different move order, playing 2...e6 before 3...c5 in order to avoid
13875-441: The psychological and tension factors which denote the best in modern play and gives notice of a fierce fight on the very first move." About 80% of Master-level games beginning 1.e4 c5 continue with 2.Nf3, after which there are three main options for Black: 2...d6 , 2...Nc6 , and 2...e6 . Lines where White then plays 3.d4 are collectively known as the Open Sicilian, and result in open , extremely complex positions. White has
14000-459: The publication of a short booklet in 1933, but this had little impact. The oldest openings tend to be named for geographic places and people. Many openings are named after nationalities of players who advocated them, for example Indian, English, Spanish, French, Dutch, Scotch, Russian, Italian, Scandinavian and Sicilian, or places where important games featuring the opening were played such as Vienna, Berlin, and Wilkes-Barre . The Catalan System
14125-606: The queen pawn to d4. Black's most common reply is 2...Nc6, which usually leads to the Ruy Lopez (3.Bb5), Scotch Game (3.d4), or Italian Game (3.Bc4). If Black instead maintains symmetry and counterattacks White's center with 2...Nf6 then the Petrov's Defense results. The Philidor Defense (2...d6) is not popular in modern chess because it allows White an easy space advantage while Black's position remains cramped and passive, although solid. Other responses to 2.Nf3 are not seen in master play. The most popular alternatives to 2.Nf3 are
14250-436: The rules of chess in the late fifteenth century increased the speed of the game, consequently emphasizing the importance of opening study. Thus, early chess books, such as the 1497 text of Luis Ramirez de Lucena , present opening analysis, as do Pedro Damiano (1512) and Ruy López de Segura (1561). Ruy López's disagreement with Damiano regarding the merits of 2...Nc6 led to 3.Bb5 (after 1.e4 e5 2.Nf3 Nc6) being named for him as
14375-515: The semi-open games White plays 1.e4 and Black breaks symmetry immediately by replying with a move other than 1...e5. The most popular Black defense to 1.e4 is the Sicilian (1...c5), but the French (1...e6, normally followed by 2.d4 d5) and the Caro–Kann (1...c6, normally followed by 2.d4 d5) are also very popular. The Pirc and the Modern are closely related openings that are also often seen, while
14500-442: The sharpest lines for White. The Benko Gambit is often played by strong players, and is very popular at lower levels. Black plays to open lines on the queenside where White will be subject to considerable pressure. If White accepts the gambit, Black's compensation is positional rather than tactical, and their initiative can last even after many piece exchanges and well into the endgame . White often chooses instead either to decline
14625-556: The strength of an adversary with whose skill you are unacquainted." In 1813, the English master Jacob Henry Sarratt effectively standardised his English translation of the name of this opening as 'the Sicilian Defence', referring to an old Italian manuscript that used the phrase il gioco siciliano ('the Sicilian game'). The Sicilian was fairly popular for much of the nineteenth century; Louis-Charles Mahé de La Bourdonnais , Adolf Anderssen , Howard Staunton , Louis Paulsen , and Carl Jaenisch all played it with some consistency. In
14750-415: The style of the Yugoslav Attack with 5.Nc3 Bg7 6.Be3 Nf6 7.f3 0-0 8.Qd2, 8...d5! equalises immediately. When White does play 5.Nc3, it is usually with the idea of continuing 5...Bg7 6.Be3 Nf6 7.Bc4 0-0 8.Bb3 (forestalling any tricks involving ...Nxe4 and ...d5), followed by kingside castling. The critical test of Black's move order is 5.c4, the Maróczy Bind . White hopes to cramp Black's position by impeding
14875-417: The subject of analyses by leading players of the day Alessandro Salvio (1604), Don Pietro Carrera (c. 1617), and Gioachino Greco (1623), and later Conte Carlo Francesco Cozio (c. 1740). The great French player and theoretician André Danican Philidor opined of the Sicilian in 1777, "This way of opening the game ... is absolutely defensive, and very far from being the best ... but it is a very good one to try
15000-430: The theory and practice of the defence. Through the efforts of world champions Bobby Fischer and Garry Kasparov , the Sicilian Defence became recognised as the defence that offered Black the most winning chances against 1.e4. Both players favoured sharp, aggressive play and employed the Sicilian almost exclusively throughout their careers, burnishing the defence's present reputation. Today, most leading grandmasters include
15125-467: The threat of ...b4 by playing 9.Bxf6 or 9.Nd5. After 9.Bxf6, 9...Qxf6?! 10.Nd5 Qd8 fails to 11.c4 b4 (11...bxc4 12.Nxc4 is good for White, who threatens 13.Qa4) 12.Qa4 Bd7 13.Nb5! axb5 14.Qxa8 Qxa8 15.Nc7+ Kd8 16.Nxa8 and the knight escapes via b6. Thus 9...gxf6 is forced, and White continues 10.Nd5. White's powerful knight on d5 and Black's shattered kingside pawn structure are compensated by Black's bishop pair and White's offside knight on a3. Also, Black has
15250-476: The twentieth century. It is now recognised as a solid opening that may be used to reach both classical and hypermodern chess positions. Mikhail Botvinnik , Tigran Petrosian , Anatoly Karpov , Garry Kasparov , Magnus Carlsen , and Ding Liren have employed it during their world championship matches. Bobby Fischer created a stir when he switched to it from his customary 1.e4 late in his career, employing it against Lev Polugaevsky and Oscar Panno at
15375-483: The variation was called the Lasker–Pelikan Variation. Emanuel Lasker played it once in his world championship match against Carl Schlechter , and Jorge Pelikan played it a few times in the 1950s, but Sveshnikov's treatment of the variation was the key to its revitalization. The move 5...e5 seems anti-positional as it leaves Black with a backwards d-pawn and a weakness on d5. Also, Black would have to accept
15500-461: The weakened pawns on White's queenside ; both players accept different combinations of advantages and disadvantages. This idea was a doctrine of the Soviet school of chess . A third objective, which is complementary to the previous ones and has been common since the 19th century, is to lure the opponent into positions with which the player is more familiar and comfortable than the opponent. This
15625-596: Was an early proponent of this move, after which Black can stay in "pure" Najdorf territory with 6...e5 or transpose to the Scheveningen with 6...e6. Other possibilities for White include 6.Bc4 (the Fischer–Sozin Attack), 6.f4, 6.f3, 6.g3, and 6.h3 (the Adams Attack, named after Weaver Adams ), which was used several times by Bobby Fischer . In the Dragon Variation, Black fianchettoes a bishop on
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