The real reference - Tigran Petrosian Reshevsky vs Petrosian, 1953  (E58) Nimzo-Indian, 4.e3, Main line with 8...Bxc3, 41 moves, 1/2-1/2 Petrosian vs Gligoric, 1962  (E94) King's Indian, Orthodox, 31 moves, 1/2-1/2 Tal vs Petrosian, 1958  (C97) Ruy Lopez, Closed, Chigorin, 73 moves, 1/2-1/2 Portisch vs Petrosian, 1972  (A35) English, Symmetrical, 39 moves, 1/2-1/2 Dunaev vs Petrosian, 1946  (B84) Sicilian, Scheveningen, 32 moves, 0-1 O Troianescu vs Petrosian, 1953  (A07) King's Indian Attack, 57 moves, 0-1 Parma vs Petrosian, 1971  (B48) Sicilian, Taimanov Variation, 37 moves, 0-1 Hort vs Petrosian, 1970  (C18) French, Winawer, 48 moves, 0-1 Spassky vs Petrosian, 1969  (E12) Queen's Indian, 56 moves, 0-1 Petrosian vs Spassky, 1966  (E63) King's Indian, Fianchetto, Panno Variation, 30 moves, 1-0 Another specialist - Vladimir Simagin Panov vs Simagin, 1943  (B76) Sicilian, Dragon, Yugoslav Attack, 31 moves, 0-1 G Ravinsky vs Simagin, 1957  (B74) Sicilian, Dragon, Classical, 25 moves, 0-1 J Bednarski vs Simagin, 1968  (B61) Sicilian, Richter-Rauzer, Larsen Variation, 7.Qd2, 38 moves, 0-1 Filippov vs T Gelashvili, 2000 (A04) Reti Opening, 40 moves, 1-0 Shirov vs Bareev, 1990  (A04) Reti Opening, 38 moves, 1-0 Kupreichik vs Yusupov, 1980  (C42) Petrov Defense, 53 moves, 0-1 Yusupov vs Kasparov, 1989  (E92) King's Indian, 41 moves, 1-0 17 games