Round one: 23 July P Biyiasas vs S Kagan, 1973  (B31) Sicilian, Rossolimo Variation, 40 moves, 1-0 Hort vs Geller, 1973 (A38) English, Symmetrical, 16 moves, 1/2-1/2 Ivkov vs Mecking, 1973  (B92) Sicilian, Najdorf, Opocensky Variation, 35 moves, 1/2-1/2 Ljubojevic vs Hug, 1973 (C17) French, Winawer, Advance, 53 moves, 1-0 Panno vs Gheorghiu, 1973 (A13) English, 12 moves, 1/2-1/2 Portisch vs Keres, 1973  (A17) English, 39 moves, 1-0 Savon vs Bronstein, 1973  (C96) Ruy Lopez, Closed, 60 moves, 1/2-1/2 L A Tan vs Smyslov, 1973  (B07) Pirc, 37 moves, 0-1 Round two: 24 July Bronstein vs P Biyiasas, 1973 (C77) Ruy Lopez, 43 moves, 1/2-1/2 Geller vs L A Tan, 1973  (B01) Scandinavian, 52 moves, 1-0 Gheorghiu vs Hort, 1973 (B52) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 19 moves, 1/2-1/2 Hug vs Ivkov, 1973 (C68) Ruy Lopez, Exchange, 17 moves, 1/2-1/2 S Kagan vs Ljubojevic, 1973 (A10) English, 40 moves, 0-1 Keres vs Reshevsky, 1973  (C95) Ruy Lopez, Closed, Breyer, 24 moves, 1/2-1/2 Mecking vs Panno, 1973 (C67) Ruy Lopez, 41 moves, 1/2-1/2 Polugaevsky vs Savon, 1973 (A29) English, Four Knights, Kingside Fianchetto, 32 moves, 1/2-1/2 Smyslov vs Portisch, 1973 (A29) English, Four Knights, Kingside Fianchetto, 41 moves, 1/2-1/2 Round three: 25 July P Biyiasas vs Ljubojevic, 1973 (A07) King's Indian Attack, 40 moves, 0-1 Bronstein vs Polugaevsky, 1973 (A29) English, Four Knights, Kingside Fianchetto, 23 moves, 1/2-1/2 Hort vs Mecking, 1973 (A30) English, Symmetrical, 41 moves, 1/2-1/2 Ivkov vs S Kagan, 1973 (E91) King's Indian, 43 moves, 1/2-1/2 Panno vs Hug, 1973  (E61) King's Indian, 30 moves, 1-0 Portisch vs Geller, 1973 (E92) King's Indian, 23 moves, 1/2-1/2 Reshevsky vs Smyslov, 1973  (E17) Queen's Indian, 47 moves, 1/2-1/2 Savon vs Keres, 1973 (C69) Ruy Lopez, Exchange, Gligoric Variation, 16 moves, 1/2-1/2 L A Tan vs Gheorghiu, 1973 (B44) Sicilian, 81 moves, 1/2-1/2 Round four Geller vs Reshevsky, 1973  (C94) Ruy Lopez, Closed, Breyer Defense, 18 moves, 1/2-1/2 Gheorghiu vs Portisch, 1973 (A29) English, Four Knights, Kingside Fianchetto, 26 moves, 1/2-1/2 Hug vs Hort, 1973  (A07) King's Indian Attack, 74 moves, 0-1 S Kagan vs Panno, 1973  (B80) Sicilian, Scheveningen, 56 moves, 0-1 Keres vs Bronstein, 1973 (D16) Queen's Gambit Declined Slav, 24 moves, 1/2-1/2 Ljubojevic vs Ivkov, 1973 (D55) Queen's Gambit Declined, 14 moves, 1/2-1/2 Mecking vs L A Tan, 1973  (A29) English, Four Knights, Kingside Fianchetto, 33 moves, 1-0 Polugaevsky vs P Biyiasas, 1973  (D48) Queen's Gambit Declined Semi-Slav, Meran, 27 moves, 1-0 Smyslov vs Savon, 1973 (A04) Reti Opening, 46 moves, 1/2-1/2 Round five: 29 July Bronstein vs Smyslov, 1973  (C91) Ruy Lopez, Closed, 33 moves, 1-0 Hort vs S Kagan, 1973 (E80) King's Indian, Samisch Variation, 57 moves, 1-0 Ivkov vs P Biyiasas, 1973 (E92) King's Indian, 42 moves, 1/2-1/2 Panno vs Ljubojevic, 1973  (A15) English, 50 moves, 0-1 Polugaevsky vs Keres, 1973  (E08) Catalan, Closed, 41 moves, 1-0 Portisch vs Mecking, 1973  (A22) English, 62 moves, 1/2-1/2 Reshevsky vs Gheorghiu, 1973 (E62) King's Indian, Fianchetto, 16 moves, 1/2-1/2 Savon vs Geller, 1973 (C93) Ruy Lopez, Closed, Smyslov Defense, 34 moves, 1/2-1/2 L A Tan vs Hug, 1973 (C05) French, Tarrasch, 37 moves, 1/2-1/2 Round six : 30 July P Biyiasas vs Keres, 1973  (C69) Ruy Lopez, Exchange, Gligoric Variation, 33 moves, 1/2-1/2 Geller vs Bronstein, 1973  (B05) Alekhine's Defense, Modern, 56 moves, 1-0 Gheorghiu vs Savon, 1973 (A29) English, Four Knights, Kingside Fianchetto, 19 moves, 1/2-1/2 Hug vs Portisch, 1973  (C05) French, Tarrasch, 44 moves, 0-1 Ivkov vs Panno, 1973 (A57) Benko Gambit, 18 moves, 1/2-1/2 S Kagan vs L A Tan, 1973 (B58) Sicilian, 41 moves, 1-0 Ljubojevic vs Hort, 1973  (B11) Caro-Kann, Two Knights, 3...Bg4, 43 moves, 1-0 Mecking vs Reshevsky, 1973  (C95) Ruy Lopez, Closed, Breyer, 32 moves, 1-0 Smyslov vs Polugaevsky, 1973 (A56) Benoni Defense, 30 moves, 1/2-1/2 Round seven: 2 August Bronstein vs Gheorghiu, 1973  (B96) Sicilian, Najdorf, 36 moves, 1-0 Hort vs Ivkov, 1973  (E39) Nimzo-Indian, Classical, Pirc Variation, 27 moves, 0-1 Keres vs Smyslov, 1973  (C97) Ruy Lopez, Closed, Chigorin, 41 moves, 0-1 Panno vs P Biyiasas, 1973  (A10) English, 41 moves, 1/2-1/2 Polugaevsky vs Geller, 1973 (E88) King's Indian, Samisch, Orthodox, 7.d5 c6, 41 moves, 1/2-1/2 Portisch vs S Kagan, 1973 (E80) King's Indian, Samisch Variation, 46 moves, 1-0 Reshevsky vs Hug, 1973 (E60) King's Indian Defense, 45 moves, 1/2-1/2 Savon vs Mecking, 1973  (B96) Sicilian, Najdorf, 33 moves, 0-1 L A Tan vs Ljubojevic, 1973 (B53) Sicilian, 35 moves, 1/2-1/2 Round eight P Biyiasas vs Smyslov, 1973 (B42) Sicilian, Kan, 47 moves, 1/2-1/2 Geller vs Keres, 1973 (D43) Queen's Gambit Declined Semi-Slav, 42 moves, 1-0 Gheorghiu vs Polugaevsky, 1973  (B87) Sicilian, Fischer-Sozin with ...a6 and ...b5, 55 moves, 0-1 Hug vs Savon, 1973 (B52) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 28 moves, 1/2-1/2 Ivkov vs L A Tan, 1973 (D47) Queen's Gambit Declined Semi-Slav, 56 moves, 1-0 S Kagan vs Reshevsky, 1973  (B91) Sicilian, Najdorf, Zagreb (Fianchetto) Variation, 65 moves, 0-1 Ljubojevic vs Portisch, 1973  (C00) French Defense, 40 moves, 1/2-1/2 Mecking vs Bronstein, 1973 (C19) French, Winawer, Advance, 22 moves, 1/2-1/2 Panno vs Hort, 1973 (A16) English, 45 moves, 1/2-1/2 Round nine: 4 August Bronstein vs Hug, 1973  (C05) French, Tarrasch, 56 moves, 1-0 Hort vs P Biyiasas, 1973 (D45) Queen's Gambit Declined Semi-Slav, 41 moves, 1-0 Keres vs Gheorghiu, 1973 (A48) King's Indian, 14 moves, 1/2-1/2 Polugaevsky vs Mecking, 1973  (D41) Queen's Gambit Declined, Semi-Tarrasch, 32 moves, 1/2-1/2 Portisch vs Ivkov, 1973  (D78) Neo-Grunfeld, 6.O-O c6, 37 moves, 1-0 Reshevsky vs Ljubojevic, 1973  (A42) Modern Defense, Averbakh System, 43 moves, 1-0 Savon vs S Kagan, 1973 (A10) English, 65 moves, 1-0 Smyslov vs Geller, 1973 (D59) Queen's Gambit Declined, Tartakower, 16 moves, 1/2-1/2 L A Tan vs Panno, 1973 (B40) Sicilian, 41 moves, 1/2-1/2 Round ten: 6 August P Biyiasas vs Geller, 1973  (B52) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 40 moves, 1-0 Gheorghiu vs Smyslov, 1973 (C69) Ruy Lopez, Exchange, Gligoric Variation, 42 moves, 0-1 Hort vs L A Tan, 1973 (D55) Queen's Gambit Declined, 71 moves, 1/2-1/2 Hug vs Polugaevsky, 1973 (B40) Sicilian, 29 moves, 0-1 Ivkov vs Reshevsky, 1973 (B51) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 10 moves, 1/2-1/2 S Kagan vs Bronstein, 1973  (B91) Sicilian, Najdorf, Zagreb (Fianchetto) Variation, 68 moves, 1-0 Ljubojevic vs Savon, 1973 (B10) Caro-Kann, 39 moves, 1-0 Mecking vs Keres, 1973  (C73) Ruy Lopez, Modern Steinitz Defense, 17 moves, 1/2-1/2 Panno vs Portisch, 1973 (A28) English, 41 moves, 1/2-1/2 Round eleven: 7 August Bronstein vs Ljubojevic, 1973  (B03) Alekhine's Defense, 41 moves, 1-0 Geller vs Gheorghiu, 1973  (A07) King's Indian Attack, 41 moves, 1-0 Keres vs Hug, 1973  (B36) Sicilian, Accelerated Fianchetto, 39 moves, 1-0 Polugaevsky vs S Kagan, 1973 (A42) Modern Defense, Averbakh System, 65 moves, 1-0 Portisch vs Hort, 1973 (D18) Queen's Gambit Declined Slav, Dutch, 27 moves, 1/2-1/2 Reshevsky vs Panno, 1973 (D83) Grunfeld, Grunfeld Gambit, 43 moves, 1-0 Savon vs Ivkov, 1973 (D58) Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst, 15 moves, 1/2-1/2 Smyslov vs Mecking, 1973  (A29) English, Four Knights, Kingside Fianchetto, 45 moves, 0-1 L A Tan vs P Biyiasas, 1973 (C55) Two Knights Defense, 57 moves, 1/2-1/2 Round twelve: 8 August P Biyiasas vs Gheorghiu, 1973  (B42) Sicilian, Kan, 39 moves, 0-1 Hort vs Reshevsky, 1973  (E95) King's Indian, Orthodox, 7...Nbd7, 8.Re1, 41 moves, 1-0 Hug vs Smyslov, 1973 (B23) Sicilian, Closed, 43 moves, 0-1 Ivkov vs Bronstein, 1973 (A53) Old Indian, 17 moves, 1/2-1/2 S Kagan vs Keres, 1973  (C69) Ruy Lopez, Exchange, Gligoric Variation, 40 moves, 0-1 Ljubojevic vs Polugaevsky, 1973 (B44) Sicilian, 35 moves, 1/2-1/2 Mecking vs Geller, 1973 (B44) Sicilian, 52 moves, 1/2-1/2 Panno vs Savon, 1973  (A28) English, 36 moves, 0-1 L A Tan vs Portisch, 1973 (B53) Sicilian, 55 moves, 0-1 Round thirteen Bronstein vs Panno, 1973  (C65) Ruy Lopez, Berlin Defense, 105 moves, 1-0 Geller vs Hug, 1973  (A57) Benko Gambit, 43 moves, 1-0 Gheorghiu vs Mecking, 1973  (B53) Sicilian, 40 moves, 0-1 Keres vs Ljubojevic, 1973 (B51) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 41 moves, 1/2-1/2 Polugaevsky vs Ivkov, 1973  (D38) Queen's Gambit Declined, Ragozin Variation, 65 moves, 1/2-1/2 Portisch vs P Biyiasas, 1973 (A42) Modern Defense, Averbakh System, 38 moves, 1-0 Reshevsky vs L A Tan, 1973 (E59) Nimzo-Indian, 4.e3, Main line, 43 moves, 1-0 Savon vs Hort, 1973 (B09) Pirc, Austrian Attack, 38 moves, 0-1 Smyslov vs S Kagan, 1973 (E62) King's Indian, Fianchetto, 65 moves, 1-0 Round fourteen: 12 August P Biyiasas vs Mecking, 1973 (A07) King's Indian Attack, 27 moves, 1/2-1/2 Hort vs Bronstein, 1973  (D16) Queen's Gambit Declined Slav, 43 moves, 1-0 Hug vs Gheorghiu, 1973 (B40) Sicilian, 41 moves, 1/2-1/2 Ivkov vs Keres, 1973 (E17) Queen's Indian, 13 moves, 1/2-1/2 S Kagan vs Geller, 1973  (B56) Sicilian, 69 moves, 0-1 Ljubojevic vs Smyslov, 1973  (B14) Caro-Kann, Panov-Botvinnik Attack, 49 moves, 0-1 Panno vs Polugaevsky, 1973  (A09) Reti Opening, 43 moves, 1-0 Portisch vs Reshevsky, 1973  (B36) Sicilian, Accelerated Fianchetto, 28 moves, 1-0 L A Tan vs Savon, 1973 (B53) Sicilian, 50 moves, 0-1 Round fifteen: 13 August Bronstein vs L A Tan, 1973 (D63) Queen's Gambit Declined, Orthodox Defense, 70 moves, 1-0 Geller vs Ljubojevic, 1973  (A56) Benoni Defense, 40 moves, 1-0 Gheorghiu vs S Kagan, 1973 (E80) King's Indian, Samisch Variation, 47 moves, 1-0 Keres vs Panno, 1973 (B52) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 41 moves, 1/2-1/2 Mecking vs Hug, 1973  (C18) French, Winawer, 35 moves, 1-0 Polugaevsky vs Hort, 1973 (A11) English, Caro-Kann Defensive System, 24 moves, 1/2-1/2 Reshevsky vs P Biyiasas, 1973 (B08) Pirc, Classical, 40 moves, 1-0 Savon vs Portisch, 1973 (C05) French, Tarrasch, 40 moves, 1/2-1/2 Smyslov vs Ivkov, 1973 (D94) Grunfeld, 18 moves, 1/2-1/2 Round sixteen P Biyiasas vs Hug, 1973  (B40) Sicilian, 22 moves, 1-0 Hort vs Keres, 1973 (A15) English, 15 moves, 1/2-1/2 Ivkov vs Geller, 1973 (D55) Queen's Gambit Declined, 13 moves, 1/2-1/2 S Kagan vs Mecking, 1973  (B58) Sicilian, 38 moves, 0-1 Ljubojevic vs Gheorghiu, 1973  (B67) Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7, 41 moves, 0-1 Panno vs Smyslov, 1973 (A15) English, 18 moves, 1/2-1/2 Portisch vs Bronstein, 1973  (D14) Queen's Gambit Declined Slav, Exchange Variation, 12 moves, 1/2-1/2 Reshevsky vs Savon, 1973  (A77) Benoni, Classical, 9...Re8, 10.Nd2, 40 moves, 0-1 L A Tan vs Polugaevsky, 1973 (B40) Sicilian, 34 moves, 0-1 Round seventeen: 17 August Bronstein vs Reshevsky, 1973  (C50) Giuoco Piano, 82 moves, 1-0 Geller vs Panno, 1973 (B83) Sicilian, 12 moves, 1/2-1/2 Gheorghiu vs Ivkov, 1973 (D37) Queen's Gambit Declined, 13 moves, 1/2-1/2 Hug vs S Kagan, 1973 (E91) King's Indian, 44 moves, 1/2-1/2 Keres vs L A Tan, 1973 (D43) Queen's Gambit Declined Semi-Slav, 40 moves, 1-0 Mecking vs Ljubojevic, 1973 (A39) English, Symmetrical, Main line with d4, 13 moves, 1/2-1/2 Polugaevsky vs Portisch, 1973  (A09) Reti Opening, 39 moves, 1-0 Savon vs P Biyiasas, 1973  (E81) King's Indian, Samisch, 71 moves, 1-0 Smyslov vs Hort, 1973  (B83) Sicilian, 32 moves, 1-0 152 games