Tigran Petrosian

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Tigran Petrosian
Tigran Petrosian World Chess Champion.jpg
Tigran Petrosian in 1975
Full name Tigran Vartanovich Petrosian
Country Soviet Union
Born (1929-06-17)June 17, 1929
Tiflis, Georgian SSR, Soviet Union (present-day Tbilisi, Georgia)
Died August 13, 1984(1984-08-13) (aged 55)
Moscow, Soviet Union
Title Grandmaster (1952)
World Champion 1963–69
Peak rating 2645 (July 1972)

Tigran Vartanovich Petrosian (Russian: Тигра́н Варта́нович Петрося́н; Armenian: Տիգրան Պետրոսյան; June 17, 1929 – August 13, 1984) was a Soviet Armenian Grandmaster, and World Chess Champion from 1963 to 1969. He was nicknamed "Iron Tigran" due to his almost impenetrable defensive playing style, which emphasised safety above all else.[1][2]

Petrosian was a Candidate for the World Championship on eight occasions (1953, 1956, 1959, 1962, 1971, 1974, 1977 and 1980). He won the World Championship in 1963 (against Mikhail Botvinnik), successfully defended it in 1966 (against Boris Spassky), and lost it in 1969 (to Spassky). Thus he was the defending World Champion or a World Championship Candidate in ten consecutive three-year cycles. He won the Soviet Championship four times (1959, 1961, 1969, and 1975).

Petrosian is widely known for popularizing chess in Armenia.[3][4] He was recognized as the hardest player to beat in the history of chess by the authors of a 2004 book.[5]

Early years

Petrosian was born to Armenian parents on June 17, 1929 in Tiflis, Georgian SSR (modern-day Georgia).[6] As a young boy, Petrosian was an excellent student and enjoyed studying, as did his brother Hmayak and sister Vartoosh. He learned to play chess at the age of 8,[7] though his illiterate father Vartan encouraged him to continue studying, as he thought chess was unlikely to bring his son any success as a career.[8] Petrosian was orphaned during World War II and was forced to sweep streets to earn a living.[6] It was about this time that his hearing began to deteriorate, a problem that afflicted him throughout his life. In a 1969 interview with Time magazine, he recalled:

He used his rations to buy Chess Praxis by Danish grandmaster Aron Nimzowitsch, a book which Petrosian would later claim to have had the greatest influence on him as a chess player.[8] He also purchased The Art of Sacrifice in Chess by Rudolf Spielmann. The other player to have had an early effect on Petrosian's chess was José Raúl Capablanca.[8] At 12 years old, he began training at the Tiflis Palace of Pioneers[7][10] under the auspices of Archil Ebralidze. Ebralidze was a supporter of Nimzowitsch and Capablanca, and his scientific approach to chess discouraged wild tactics and dubious combinations. As such, Petrosian developed a repertoire of solid positional openings, such as the Caro–Kann Defence.[8] After training at the Palace of Pioneers for just one year, he defeated visiting Soviet grandmaster Salo Flohr at a simultaneous exhibition.[7][10]

By 1946, Petrosian had earned the title of Candidate Master. In that year alone, he drew against Grandmaster Paul Keres at the Georgian Chess Championship, then moved to Yerevan where he won the Armenian Chess Championship and the USSR Junior Chess Championship. Petrosian earned the title of Master during the 1947 USSR Chess Championship, though he failed to qualify for the finals.[10] He set about to improve his game by studying Nimzowitsch's My System and by moving to Moscow to seek greater competition.[7]

Grandmaster in Moscow

Petrosian (standing on right, with jacket) at the 1961 European Chess Team Championship. Seated, facing right, is Mikhail Tal, then world champion.

After moving to Moscow in 1949, Petrosian's career as a chess player advanced rapidly and his results in Soviet events steadily improved. He placed second in the 1951 Soviet Championship, thereby earning the title of international master. It was in this tournament that Petrosian faced world champion Botvinnik for the first time. Playing White, after obtaining a slightly inferior position from the opening, he defended through two adjournments and eleven total hours of play to obtain a draw.[11] Petrosian's result in this event qualified him for the Interzonal the following year in Stockholm. He earned the title of Grandmaster by coming in second in the Stockholm tournament, and qualified for the 1953 Candidates Tournament.[12]

Petrosian placed fifth in the 1953 Candidates Tournament, a result which marked the beginning of a somewhat stagnant period in his career. He seemed content drawing against weaker players and maintaining his title of Grandmaster rather than improving his chess or making an attempt at becoming World Champion. This attitude was illustrated by his result in the 1955 USSR Championship: out of 19 games played, Petrosian was undefeated, but won only four games and drew the rest, with each of the draws lasting twenty moves or less. Although his consistent playing ensured decent tournament results, it was looked down upon by the public and by Soviet chess media and authorities.[12] Near the end of the event, journalist Vasily Panov wrote the following comment about the tournament contenders: "Real chances of victory, besides Botvinnik and Smyslov, up to round 15, are held by Geller, Spassky and Taimanov. I deliberately exclude Petrosian from the group, since from the very first rounds the latter has made it clear that he is playing for an easier, but also honourable conquest—a place in the interzonal quartet."[13]

This period of complacency ended with the 1957 USSR Championship, where out of 21 games played, Petrosian won seven, lost four, and drew the remaining 10. Although this result was only good enough for seventh place in a field of 22 competitors, his more ambitious approach to tournament play was met with great appreciation from the Soviet chess community. He went on to win his first USSR Championship in 1959, and later that year in the Candidates Tournament he defeated Paul Keres with a display of his often-overlooked tactical abilities. Petrosian was awarded the title of Master of Sport of the USSR in 1960, and won a second Soviet title in 1961.[14] His excellent playing continued through 1962 when he qualified for the Candidates Tournament for what would be his first World Championship match.[12]

1963 World Championship

After playing in the 1962 Interzonal in Stockholm, Petrosian qualified for the Candidates Tournament in Curaçao along with Pal Benko, Miroslav Filip, Bobby Fischer, Efim Geller, Paul Keres, Viktor Korchnoi, and Mikhail Tal. Petrosian, representing the Soviet Union, won the tournament with a final score of 17½ points, followed by fellow Soviets Geller and Keres each with 17 points and the American Fischer with 14.[15] Fischer later accused the Soviet players of arranging draws and having "ganged up" on him to prevent him from winning the tournament.[16] As evidence for this claim, he noted that all 12 games played between Petrosian, Geller, and Keres were draws. Statisticians pointed out that when playing against each other, these Soviet competitors averaged 19 moves per game, as opposed to 39.5 moves when playing against other competitors. Although responses to Fischer's allegations were mixed, FIDE later adjusted the rules and format to try to prevent future collusion in the Candidates matches.[15]

Having won the Candidates Tournament, Petrosian earned the right to challenge Mikhail Botvinnik for the title of World Chess Champion in a 24-game match. In addition to practicing his chess, Petrosian also prepared for the match by skiing for several hours each day. He believed that in such a long match, physical fitness could become a factor in the later games. This advantage was increased by Botvinnik being much older than Petrosian.[15] Whereas a multitude of draws in tournament play could prevent a player from taking first place, draws did not affect the outcome of a one-on-one match. In this regard, Petrosian's cautious playing style was well-suited for match play, as he could simply wait for his opponent to make mistakes and then capitalize on them.[17] Petrosian won the match against Botvinnik with a final score of 5 to 2 with 15 draws, securing the title of World Champion.[18]

Reigning World Champion

Upon becoming World Champion, Petrosian campaigned for the publication of a chess newspaper for the entire Soviet Union rather than just Moscow. This newspaper became known as 64.[19] Petrosian studied for a degree of Master of Philosophical Science at Yerevan State University; his thesis, dated 1968, was titled "Chess Logic, Some Problems of the Logic of Chess Thought".[14]

Three years after Petrosian had earned the title of World Chess Champion, he was challenged by Boris Spassky. Petrosian successfully defended his title, a feat that had not been accomplished since Alexander Alekhine defeated Efim Bogoljubov in the 1934 World Championship.[20] However, Spassky would defeat Efim Geller, Bent Larsen and Viktor Korchnoi in the next candidates cycle earning a rematch with Petrosian, at Moscow 1969. Spassky won the match by 12½–10½.

Later career

To commemorate the 75th anniversary of his birth, the Republic of Armenia issued this 220 dram stamp on February 25, 2005.

Along with a number of other Soviet chess champions, he signed a petition condemning the actions of the defector Viktor Korchnoi in 1976. It was the continuation of a bitter feud between the two, dating back at least to their 1974 Candidates semifinal match in which Petrosian withdrew after five games while trailing 3½–1½ (+3 −1 =1). His match with Korchnoi in 1977 saw the two former colleagues refuse to shake hands or speak to each other. They even demanded separate eating and toilet facilities. Petrosian went on to lose the match and was subsequently fired as editor of Russia's largest chess magazine, 64. His detractors condemned his reluctance to attack and some put it down to a lack of courage. At this point however, Botvinnik spoke out on his behalf, stating that he only attacked when he felt secure and his greatest strength was in defence.[21]

Some of his late successes included victories at Lone Pine 1976 and in the 1979 Paul Keres Memorial tournament in Tallinn (12/16 without a loss, ahead of Tal, Bronstein and others), shared first place (with Portisch and Hübner) in the Rio de Janeiro Interzonal the same year, and second place in Tilburg in 1981, half a point behind the winner Beliavsky. It was here that he played his last famous victory, a miraculous escape against the young Garry Kasparov.[22]

Death and legacy

Petrosian's statue near the Yerevan Chess House

Petrosian died of stomach cancer in 1984 in Moscow and is buried in the Moscow Armenian Cemetery. In 1987, World Chess Champion Garry Kasparov unveiled a memorial at Petrosian's grave which depicts the laurel wreath of World Champion and an image contained within a crown of the sun shining above the twin peaks of Mount Ararat – the national symbol of Petrosian's Armenian homeland. On 7 July 2006, a monument honoring Petrosian was opened in the Davtashen district of Yerevan, in the street named after Petrosian.[23]

Olympiads and team championships

Petrosian was not selected for the Soviet Olympiad side until 1958; he had already been a Candidate twice by that time. But he then made ten straight Soviet Olympiad teams from 1958 to 1978, won nine team gold medals, one team silver medal, and six individual gold medals.
His overall performance in Olympiad play is impressive: +78 −1 =50 (only one game lost, to Robert Hübner, out of 129 played), for 79.8 per cent, the third all-time best performance after Mikhail Tal and Anatoly Karpov.[24] His Olympiad results follow.

  • Munich 1958, 2nd reserve, 10½/13 (+8 −0 =5), board and team gold medals
  • Leipzig 1960, 2nd reserve, 12/13 (+11 −0 =2), board and team gold medals
  • Varna 1962, board 2, 10/12 (+8 −0 =4), board and team gold medals
  • Tel Aviv 1964, board 1, 9½/13 (+6 −0 =7), team gold medal
  • Havana 1966, board 1, 11½/13 (+10 −0 =3), board and team gold medals
  • Lugano 1968, board 1, 10½/12 (+9 −0 =3), board and team gold medals
  • Siegen 1970, board 2, 10/14 (+6 −0 =8), team gold medal
  • Skopje 1972, board 1, 10½/16 (+6 −1 =9), team gold medal
  • Nice 1974, board 4, 12½/14 (+11 −0 =3), board and team gold medals
  • Buenos Aires 1978, board 2, 6/9 (+3 −0 =6), team silver medal
Tigran Petrosian's Grave

Petrosian also made the Soviet team for the first eight European Team Championships (from 1957 to 1983). He won eight team gold medals, and four board gold medals. His totals in Euroteams play, according to olimpbase.org, are (+15 −0 =37), for 64.4 per cent.[24] His Euroteams results follow.

  • Vienna 1957, board 6, 4/5 (+3 −0 =2), board and team gold medals
  • Oberhausen 1961, board 4, 6/8 (+4 −0 =4), board and team gold medals
  • Hamburg 1965, board 1, 6/10 (+2 −0 =8), board and team gold medals
  • Kapfenberg 1970, board 1, 3½/6 (+1 −0 =5), team gold medal
  • Bath, Somerset 1973, board 2, 4½/7 (+2 −0 =5), board and team gold medals
  • Moscow 1977, board 2, 3½/6 (+1 −0 =5), team gold medal
  • Skara 1980, board 3, 2½/5 (+0 −0 =5), team gold medal
  • Plovdiv 1983, board 3, 3½/5 (+2 −0 =3), team gold medal

Playing style

Petrosian was a conservative, cautious, and highly defensive chess player who was strongly influenced by Aron Nimzowitsch's idea of prophylaxis. He made more effort to prevent his opponent's offensive capabilities than he did to make use of his own. He very rarely went on the offensive unless he felt his position was completely secure.[6] He usually won by playing consistently until his aggressive opponent made a mistake, securing the win by capitalizing upon this mistake without revealing any weaknesses of his own. This style of play often led to draws, especially against other players who preferred to counterattack. Nonetheless, his patience and mastery of defence made him extremely difficult to beat. He was undefeated at the 1952 and 1955 Interzonals, and in 1962 he did not lose a single tournament game. Petrosian's consistent ability to avoid defeat earned him the nickname "Iron Tigran".[25]

Petrosian preferred to play closed openings that did not commit his pieces to any particular plan. As black, Petrosian enjoyed playing the Sicilian Defence, Najdorf Variation[26] and the French Defence. As white, he often played the English Opening.[27] Petrosian would often move the same piece multiple times in a few moves, confusing his opponents in the opening and threatening draws by threefold repetition in the endgame. In a game against Mark Taimanov during the 1955 USSR Chess Championship, Petrosian moved the same rook 6 times in a 24-move game, with 4 of those moves occurring on consecutive turns.[28][29] He had a strong affinity for knights rather than bishops, a characteristic that is attributed to the influence of Aron Nimzowitsch.[30]

A number of illustrative metaphors have been used to describe Petrosian's style of play. Harold C. Schonberg said that "playing him was like trying to put handcuffs on an eel. There was nothing to grip."[25] He has been described as a centipede lurking in the dark,[25] a tiger looking for the opportunity to pounce, a python who slowly squeezes his victims to death,[6] and as a crocodile who waits for hours to make a decisive strike.[31] Boris Spassky, who would succeed Petrosian as World Chess Champion, described his style of play as such: "Petrosian reminds me of a hedgehog. Just when you think you have caught him, he puts out his quills."[6]

Petrosian's style of play, although highly successful for avoiding defeats, was criticized as being dull. Chess enthusiasts saw his "ultraconservative" style as an unwelcome contrast to the popular image of Soviet chess as "daring" and "indomitable".[32] His 1971 Candidates Tournament match with Viktor Korchnoi featured so many monotonous draws that the Russian press began to complain. However, Svetozar Gligorić described Petrosian as being "very impressive in his incomparable ability to foresee danger on the board and to avoid any risk of defeat."[25] Petrosian responded to his criticisms by saying "They say my games should be more 'interesting'. I could be more 'interesting'—and also lose."[6] Petrosian was, in the words of future World Champion Vladimir Kramnik, "the first defender with a capital D".[33]

Despite his reputation as a dull player, however, Petrosian would occasionally play in an attacking, sacrificial style. He would often do this as a psychological ploy to unsettle opponents. In his 1966 match with Spassky, he won Game 7 and Game 10 this way. Boris Spassky subsequently stated: "It is to Petrosian's advantage that his opponents never know when he is suddenly going to play like Mikhail Tal." (Tal was known as the most aggressive attacker of his era).[34]

The positional exchange sacrifice

Reshevsky vs. Petrosian, 1953
a b c d e f g h
d8 black rook
e8 black queen
g8 black king
e7 black rook
f7 black pawn
g7 black pawn
h7 black pawn
c6 black knight
g6 black bishop
a5 black pawn
b5 black pawn
e5 white pawn
c4 black pawn
d4 white pawn
f4 white queen
g4 white bishop
a3 white pawn
c3 white pawn
e3 white rook
b2 white bishop
g2 white pawn
h2 white pawn
e1 white rook
g1 white king
7 7
6 6
5 5
4 4
3 3
2 2
1 1
a b c d e f g h
Position after 25.Rfe1

Petrosian was known for his use of the "positional exchange sacrifice", where one side sacrifices a rook for the opponent's bishop or knight. Kasparov discussed Petrosian's use of this motif:

One of Petrosian's most famous examples of the positional exchange sacrifice is from his game against Samuel Reshevsky in Zurich 1953.[36] Reshevsky, playing white, appears to have an advantage due to his strong pawn center, which may become mobile after Bf3 and d4–d5. Petrosian realized he was in a difficult position because of the passive placement of his pieces, relegated to defensive roles. He further understood that White might also advance on the kingside with h2–h4–h5, provoking weaknesses that would make it more difficult to defend later on. Faced with these threats, Petrosian devised a plan to maneuver his knight to the square d5, where it would be prominently placed in the center, and blockade the advance of White's pawns.

25... Re6!

With the rook vacated from e7, the black knight is free to move to d5, where it will be attacking the pawn on c3, and help support an eventual advance of his queenside pawn majority with b5–b4.

26. a4 Ne7 27. Bxe6 fxe6 28. Qf1 Nd5 29. Rf3 Bd3 30. Rxd3 cxd3

The game was eventually drawn on move 41.[37]

Contributions to opening theory

a b c d e f g h
a8 black rook
b8 black knight
c8 black bishop
d8 black queen
f8 black rook
g8 black king
a7 black pawn
b7 black pawn
c7 black pawn
f7 black pawn
g7 black bishop
h7 black pawn
d6 black pawn
f6 black knight
g6 black pawn
d5 white pawn
e5 black pawn
c4 white pawn
e4 white pawn
c3 white knight
f3 white knight
a2 white pawn
b2 white pawn
e2 white bishop
f2 white pawn
g2 white pawn
h2 white pawn
a1 white rook
c1 white bishop
d1 white queen
e1 white king
h1 white rook
7 7
6 6
5 5
4 4
3 3
2 2
1 1
a b c d e f g h
King's Indian Defence, Petrosian System

Petrosian was an expert against the King's Indian Defence, and he often played what is now known as the Petrosian System: 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5 7.d5.[38][39] This variation closes the center early in the game. One of the tactical ideas for White is to play Bg5, pinning Black's knight to his queen. Black can respond by either moving his queen (usually ...Qe8) or by playing ...h6, though the latter move weakens Black's kingside pawn structure.[40] Two of Black's responses to the Petrosian Variation were developed by grandmasters Paul Keres and Leonid Stein. The Keres Variation arises after 7...Nbd7 8.Bg5 h6 9.Bh4 g5 10.Bg3 Nh5 11.h4, and the Stein Variation begins an immediate queenside offensive with 7...a5.[41]

The Queen's Indian Defence also has a variation developed by Petrosian: 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3,[42] with the idea of preventing ...Bb4+. This system received much attention in 1980 when it was used by the young Garry Kasparov to defeat several grandmasters. Today the Petrosian Variation is still considered the most pressing variation, with the greatest score in Master games.[43]

Other Petrosian variations can be found in the Grünfeld Defence after 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5,[44] and the French Defence after 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Qd7.[45] Some authorities refer to a variation of the Caro–Kann Defence with his name, along with former World Champion Vassily Smyslov: the Petrosian–Smyslov Variation, 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7.[46]


Petrosian was partially deaf[47] and wore a hearing aid during his matches, which sometimes led to strange situations. On one occasion he offered a draw to Svetozar Gligorić, which Gligorić initially refused in surprise, but then changed his mind in a few seconds and re-offered the draw. However, Petrosian did not even respond, instead went ahead and won the game. As it later turned out, he switched off his hearing aid, and did not hear when Gligorić re-offered the draw.[48] In 1971, he played a candidates match against Robert Hübner in a noisy area in Seville, which did not disturb him, but frustrated Hübner so much that he finally withdrew from the match.[49]


  • "In those years, it was easier to win the Soviet Championship than a game against 'Iron Tigran'." – Lev Polugaevsky[50]
  • "It is to Petrosian's advantage that his opponents never know when he is suddenly going to play like Mikhail Tal." – Boris Spassky[34]
  • "He [Petrosian] has an incredible tactical view, and a wonderful sense of the danger... No matter how much you think deep... He will 'smell' any kind of danger 20 moves before!" – Bobby Fischer
  • "Chess is a game by its form, an art by its content and a science by the difficulty of gaining mastery in it. Chess can convey as much happiness as a good book or work of music can. However, it is necessary to learn to play well and only afterwards will one experience real delight." – Tigran Petrosian
  • "I'm absolutely convinced that in chess – although it remains a game – there is nothing accidental. And this is my credo. I like only those chess games, in which I have played in accordance with the position requirements... I believe only in logical and right game." – Tigran Petrosian[51]

See also


  1. Vasiliev 1974, p. 27.
  2. Kasparov 2004, pp. 7, 16, 62, 80.
  3. Parkinson, Joe (3 December 2012). "Winning Move: Chess Reigns as Kingly Pursuit in Armenia". The Wall Street Journal. Retrieved 24 August 2013.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  4. "In Armenia chess is king and grandmasters are stars". The Independent. 13 May 2010. Archived from the original on 15 September 2014.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  5. Edmonds & Eidinow 2004, p. 48.
  6. 6.0 6.1 6.2 6.3 6.4 6.5 Saidy 1972, pp. 102–04.
  7. 7.0 7.1 7.2 7.3 Sunnucks 1970, pp. 353–54.
  8. 8.0 8.1 8.2 8.3 Vasiliev 1974, pp. 15–22.
  9. Chelminski 1969, p. 42.
  10. 10.0 10.1 10.2 Clarke 1964, pp. 11–12.
  11. Vasiliev 1974, p. 43.
  12. 12.0 12.1 12.2 Winter 1981, pp. 103–04.
  13. Vasiliev 1974, p. 60.
  14. 14.0 14.1 Vasiliev 1974, p. 7.
  15. 15.0 15.1 15.2 Schonberg 1973, pp. 246–47.
  16. Evans, Larry (9 July 1972). "Fischer on Russian Cheating". The Register-Guard.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  17. Vasiliev 1974, pp. 11–13.
  18. Schonberg 1973, p. 248.
  19. Vasiliev 1974, pp. 155–86.
  20. In the 1951 and 1954 World Championship matches, Botvinnik retained his title because he drew with David Bronstein and with Vasily Smyslov respectively. All other World Championship matches between 1934 and 1966 were won by the challengers.
  21. CHESS Magazine – September 1984
  22. Kasparov vs. Petrosian, Tilburg 1981 at Chessgames.com
  23. "Monument Tigran Petrosian". Armenian Travel Bureau. Retrieved 2010-06-24.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  24. 24.0 24.1 Petrosian, Tigran team chess records at olimpbase.org
  25. 25.0 25.1 25.2 25.3 Schonberg 1973, p. 245.
  26. Saidy 1972, pp. 104–06.
  27. Tigran Vartanovich Petrosian on ChessGames.com
  28. Saidy 1972, pp. 106–08.
  29. Tigran Vartanovich Petrosian vs Mark Taimanov on ChessGames.com
  30. Clarke 1964, p. 6.
  31. Lawson, Dominic (May 2009). "Armenian Artist". Standpoint. Retrieved 12 April 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  32. Schonberg 1973, p. 243.
  33. Barsky, Vladimir (15 May 2005). "Kramnik – Interviews". Kramnik.com. Retrieved 8 April 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  34. 34.0 34.1 "Tigran Petrosian's Best Games". chessgames.com. Retrieved 21 December 2013.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  35. Kasparov 2004, p. 12.
  36. Reshevsky vs. Petrosian, 1953
  37. Petrosian 1990, pp. 68–69.
  38. King's Indian, Petrosian System on ChessGames.com
  39. King's Indian Defense, Petrosian Variation on Chess.com
  40. Gufeld & Schiller 2000, p. 140.
  41. Gufeld & Schiller 2000, pp. 140–42.
  42. Queen's Indian Defense, Petrosian Variation on Chess.com
  43. [1] on Chess365.com
  44. Gruenfeld Defense: Three Knights Variation, Petrosian System on Chess.com
  45. French Defense: Winawer Variation, Petrosian Variation on Chess.com
  46. Karpov & Beliavsky 1994, p. needed.
  47. Kennedy, Rick. "Petrosian vs the Elite". Chesville. Retrieved October 8, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  48. Petrosian & Sehtman 1989, p. needed.
  49. Evans, Larry (June 21, 1971). "Six moves toward a world championship". Sports Illustrated. Retrieved October 8, 2010.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  50. Kasparov 2004, p. 80.
  51. Chess Champion of the World Tigran Petrosian


External links

Preceded by
Mikhail Botvinnik
World Chess Champion
Succeeded by
Boris Spassky
Preceded by
David Bronstein
Youngest chess grandmaster ever
Succeeded by
Boris Spassky