Round 1 July 17th Petrosian vs Spassky, 1966  (D58) Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst, 29 moves, 1/2-1/2 Reshevsky vs Fischer, 1966  (E92) King's Indian, 42 moves, 1/2-1/2 Portisch vs Najdorf, 1966  (E67) King's Indian, Fianchetto, 33 moves, 1/2-1/2 Ivkov vs B Larsen, 1966  (E16) Queen's Indian, 46 moves, 1-0 J H Donner vs Unzicker, 1966  (E55) Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation, 43 moves, 1/2-1/2 Round 2 July 19th Spassky vs Unzicker, 1966  (C95) Ruy Lopez, Closed, Breyer, 46 moves, 1-0 B Larsen vs J H Donner, 1966  (B67) Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7, 58 moves, 1/2-1/2 Najdorf vs Ivkov, 1966  (D25) Queen's Gambit Accepted, 26 moves, 1-0 Fischer vs Portisch, 1966  (C95) Ruy Lopez, Closed, Breyer, 71 moves, 1/2-1/2 Petrosian vs Reshevsky, 1966  (E12) Queen's Indian, 41 moves, 1/2-1/2 Round 3 July 20th Reshevsky vs Spassky, 1966  (E43) Nimzo-Indian, Fischer Variation, 20 moves, 1/2-1/2 Portisch vs Petrosian, 1966  (E63) King's Indian, Fianchetto, Panno Variation, 32 moves, 1-0 Ivkov vs Fischer, 1966  (A49) King's Indian, Fianchetto without c4, 42 moves, 0-1 J H Donner vs Najdorf, 1966  (E60) King's Indian Defense, 41 moves, 1/2-1/2 Unzicker vs B Larsen, 1966  (B61) Sicilian, Richter-Rauzer, Larsen Variation, 7.Qd2, 38 moves, 1/2-1/2 Round 4 July 21st Spassky vs B Larsen, 1966  (B64) Sicilian, Richter-Rauzer Attack, 80 moves, 1/2-1/2 Najdorf vs Unzicker, 1966  (E59) Nimzo-Indian, 4.e3, Main line, 26 moves, 1/2-1/2 Fischer vs J H Donner, 1966  (C89) Ruy Lopez, Marshall, 34 moves, 1/2-1/2 Petrosian vs Ivkov, 1966  (E75) King's Indian, Averbakh, Main line, 25 moves, 1/2-1/2 Reshevsky vs Portisch, 1966  (D28) Queen's Gambit Accepted, Classical, 16 moves, 1/2-1/2 Round 5 July 24th Portisch vs Spassky, 1966  (E47) Nimzo-Indian, 4.e3 O-O 5.Bd3, 32 moves, 1/2-1/2 Ivkov vs Reshevsky, 1966  (C84) Ruy Lopez, Closed, 93 moves, 1/2-1/2 J H Donner vs Petrosian, 1966  (A56) Benoni Defense, 35 moves, 1/2-1/2 Unzicker vs Fischer, 1966  (B92) Sicilian, Najdorf, Opocensky Variation, 77 moves, 1/2-1/2 B Larsen vs Najdorf, 1966  (E98) King's Indian, Orthodox, Taimanov, 9.Ne1, 69 moves, 1-0 Round 6 July 25th Spassky vs Najdorf, 1966  (D78) Neo-Grunfeld, 6.O-O c6, 36 moves, 1/2-1/2 Fischer vs B Larsen, 1966  (C82) Ruy Lopez, Open, 30 moves, 0-1 Petrosian vs Unzicker, 1966  (D32) Queen's Gambit Declined, Tarrasch, 37 moves, 1/2-1/2 Reshevsky vs J H Donner, 1966  (E55) Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation, 36 moves, 1-0 Portisch vs Ivkov, 1966  (E75) King's Indian, Averbakh, Main line, 43 moves, 1/2-1/2 Round 7 July 27th Ivkov vs Spassky, 1966  (E17) Queen's Indian, 36 moves, 0-1 J H Donner vs Portisch, 1966  (D35) Queen's Gambit Declined, 36 moves, 1/2-1/2 Unzicker vs Reshevsky, 1966  (C93) Ruy Lopez, Closed, Smyslov Defense, 22 moves, 1/2-1/2 B Larsen vs Petrosian, 1966  (B39) Sicilian, Accelerated Fianchetto, Breyer Variation, 30 moves, 1-0 Najdorf vs Fischer, 1966  (E75) King's Indian, Averbakh, Main line, 31 moves, 1-0 Round 8 July 28th Spassky vs Fischer, 1966  (D86) Grunfeld, Exchange, 50 moves, 1-0 Petrosian vs Najdorf, 1966  (A05) Reti Opening, 86 moves, 1-0 Reshevsky vs B Larsen, 1966  (A96) Dutch, Classical Variation, 19 moves, 1/2-1/2 Portisch vs Unzicker, 1966  (D11) Queen's Gambit Declined Slav, 59 moves, 1/2-1/2 Ivkov vs J H Donner, 1966  (B16) Caro-Kann, Bronstein-Larsen Variation, 28 moves, 1/2-1/2 Round 9 July 31st J H Donner vs Spassky, 1966  (E44) Nimzo-Indian, Fischer Variation, 5.Ne2, 25 moves, 1/2-1/2 Unzicker vs Ivkov, 1966  (B92) Sicilian, Najdorf, Opocensky Variation, 78 moves, 1-0 B Larsen vs Portisch, 1966  (C20) King's Pawn Game, 53 moves, 1-0 Najdorf vs Reshevsky, 1966  (E53) Nimzo-Indian, 4.e3, 23 moves, 1/2-1/2 Fischer vs Petrosian, 1966  (B48) Sicilian, Taimanov Variation, 40 moves, 1/2-1/2 Round 10 August 1st Spassky vs Petrosian, 1966  (D27) Queen's Gambit Accepted, Classical, 22 moves, 1/2-1/2 Fischer vs Reshevsky, 1966  (C92) Ruy Lopez, Closed, 38 moves, 1-0 Najdorf vs Portisch, 1966  (E14) Queen's Indian, 40 moves, 1/2-1/2 B Larsen vs Ivkov, 1966  (B08) Pirc, Classical, 57 moves, 1-0 Unzicker vs J H Donner, 1966  (D19) Queen's Gambit Declined Slav, Dutch, 31 moves, 1/2-1/2 Round 11 August 3rd Unzicker vs Spassky, 1966  (B91) Sicilian, Najdorf, Zagreb (Fianchetto) Variation, 22 moves, 1/2-1/2 J H Donner vs B Larsen, 1966  (D72) Neo-Grunfeld, 5.cd, Main line, 41 moves, 1-0 Ivkov vs Najdorf, 1966  (E19) Queen's Indian, Old Main line, 9.Qxc3, 20 moves, 1/2-1/2 Portisch vs Fischer, 1966  (E45) Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation, 35 moves, 0-1 Reshevsky vs Petrosian, 1966  (E55) Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation, 22 moves, 1/2-1/2 Round 12 August 4th Spassky vs Reshevsky, 1966  (E55) Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation, 50 moves, 1/2-1/2 Petrosian vs Portisch, 1966  (D67) Queen's Gambit Declined, Orthodox Defense, Bd3 line, 71 moves, 1/2-1/2 Fischer vs Ivkov, 1966  (A07) King's Indian Attack, 29 moves, 1-0 Najdorf vs J H Donner, 1966  (D25) Queen's Gambit Accepted, 38 moves, 1-0 B Larsen vs Unzicker, 1966  (A38) English, Symmetrical, 40 moves, 0-1 Round 13 August 7th B Larsen vs Spassky, 1966  (D25) Queen's Gambit Accepted, 43 moves, 0-1 Unzicker vs Najdorf, 1966  (B83) Sicilian, 48 moves, 1/2-1/2 J H Donner vs Fischer, 1966  (E67) King's Indian, Fianchetto, 28 moves, 0-1 Ivkov vs Petrosian, 1966  (E19) Queen's Indian, Old Main line, 9.Qxc3, 30 moves, 1/2-1/2 Portisch vs Reshevsky, 1966  (E45) Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation, 41 moves, 1/2-1/2 Round 14 August 8th Spassky vs Portisch, 1966  (C93) Ruy Lopez, Closed, Smyslov Defense, 23 moves, 1/2-1/2 Reshevsky vs Ivkov, 1966  (B08) Pirc, Classical, 52 moves, 1/2-1/2 Petrosian vs J H Donner, 1966  (A07) King's Indian Attack, 55 moves, 1-0 Fischer vs Unzicker, 1966  (C83) Ruy Lopez, Open, 63 moves, 1/2-1/2 Najdorf vs B Larsen, 1966  (E73) King's Indian, 50 moves, 1/2-1/2 Round 15 August 10th Najdorf vs Spassky, 1966  (D58) Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst, 22 moves, 1/2-1/2 B Larsen vs Fischer, 1966  (E75) King's Indian, Averbakh, Main line, 43 moves, 0-1 Unzicker vs Petrosian, 1966 (B92) Sicilian, Najdorf, Opocensky Variation, 23 moves, 1/2-1/2 J H Donner vs Reshevsky, 1966  (E67) King's Indian, Fianchetto, 41 moves, 1/2-1/2 Ivkov vs Portisch, 1966  (C49) Four Knights, 73 moves, 0-1 Round 16 August 11th Spassky vs Ivkov, 1966  (E63) King's Indian, Fianchetto, Panno Variation, 30 moves, 1/2-1/2 Portisch vs J H Donner, 1966  (A33) English, Symmetrical, 19 moves, 1-0 Reshevsky vs Unzicker, 1966  (E55) Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation, 41 moves, 1/2-1/2 Petrosian vs B Larsen, 1966  (A16) English, 61 moves, 0-1 Fischer vs Najdorf, 1966  (B44) Sicilian, 47 moves, 1-0 Round 17 August 14th Fischer vs Spassky, 1966  (C89) Ruy Lopez, Marshall, 35 moves, 1/2-1/2 Najdorf vs Petrosian, 1966  (E60) King's Indian Defense, 74 moves, 0-1 B Larsen vs Reshevsky, 1966  (A57) Benko Gambit, 45 moves, 1-0 Unzicker vs Portisch, 1966 (C95) Ruy Lopez, Closed, Breyer, 21 moves, 1/2-1/2 J H Donner vs Ivkov, 1966  (A42) Modern Defense, Averbakh System, 35 moves, 0-1 Round 18 August 15th Spassky vs J H Donner, 1966  (C86) Ruy Lopez, Worrall Attack, 35 moves, 1-0 Ivkov vs Unzicker, 1966  (C49) Four Knights, 30 moves, 1/2-1/2 Portisch vs B Larsen, 1966  (A30) English, Symmetrical, 32 moves, 1/2-1/2 Reshevsky vs Najdorf, 1966  (E41) Nimzo-Indian, 54 moves, 1-0 Petrosian vs Fischer, 1966  (E62) King's Indian, Fianchetto, 28 moves, 1/2-1/2 90 games