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Interzonals 1979: Riga
Compiled by capybara
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The Riga Interzonal was held in September & October 1979.It was an eighteen-player round robin,with the top two players qualifying for the Candidates matches.The winner was Tal with 14/17 (+11 =6 -0),the runner-up was Polugaevsky with 11.5.Just missing out with 11 were Adorjan and Ribli.The round fifteen game between Bouaziz and Gruenfeld was not played,Gruenfeld had a default victory.

Round one
Gheorghiu vs Romanishin, 1979
(E12) Queen's Indian, 24 moves, 1/2-1/2

Y Gruenfeld vs Adorjan, 1979
(B33) Sicilian, 15 moves, 1/2-1/2

Ljubojevic vs Larsen, 1979
(B92) Sicilian, Najdorf, Opocensky Variation, 19 moves, 1/2-1/2

Mednis vs S Bouaziz, 1979
(B92) Sicilian, Najdorf, Opocensky Variation, 61 moves, 1-0

Miles vs Ruben Rodriguez, 1979 
(D85) Grunfeld, 38 moves, 1-0

Ribli vs G Kuzmin, 1979
(A16) English, 19 moves, 1/2-1/2

Tal vs Tseshkovsky, 1979 
(B33) Sicilian, 42 moves, 1-0

F Trois vs Polugaevsky, 1979 
(E15) Queen's Indian, 45 moves, 0-1

H Van Riemsdijk vs Tarjan, 1979 
(B95) Sicilian, Najdorf, 6...e6, 65 moves, 1-0

Round two
Adorjan vs Ruben Rodriguez, 1979
(A16) English, 18 moves, 1/2-1/2

S Bouaziz vs Ribli, 1979
(B84) Sicilian, Scheveningen, 34 moves, 0-1

Y Gruenfeld vs Ljubojevic, 1979 
(B03) Alekhine's Defense, 37 moves, 0-1

G Kuzmin vs Gheorghiu, 1979
(B99) Sicilian, Najdorf, 7...Be7 Main line, 37 moves, 0-1

Larsen vs H Van Riemsdijk, 1979 
(A00) Uncommon Opening, 23 moves, 1-0

Polugaevsky vs Tal, 1979 
(A34) English, Symmetrical, 28 moves, 0-1

Romanishin vs F Trois, 1979
(A14) English, 46 moves, 1-0

Tarjan vs Mednis, 1979 
(B67) Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7, 38 moves, 1-0

Tseshkovsky vs Miles, 1979
(B77) Sicilian, Dragon, Yugoslav Attack, 34 moves, 0-1

Round three
Gheorghiu vs S Bouaziz, 1979
(A34) English, Symmetrical, 59 moves, 1-0

Ljubojevic vs Adorjan, 1979
(B33) Sicilian, 26 moves, 0-1

Mednis vs Larsen, 1979
(B11) Caro-Kann, Two Knights, 3...Bg4, 39 moves, 0-1

Miles vs Polugaevsky, 1979 
(E15) Queen's Indian, 77 moves, 0-1

Ribli vs Tarjan, 1979
(A34) English, Symmetrical, 17 moves, 1/2-1/2

Ruben Rodriguez vs Tseshkovsky, 1979
(A71) Benoni, Classical, 8.Bg5, 48 moves, 1/2-1/2

Tal vs Romanishin, 1979 
(C93) Ruy Lopez, Closed, Smyslov Defense, 38 moves, 1-0

F Trois vs G Kuzmin, 1979
(E17) Queen's Indian, 41 moves, 1-0

H Van Riemsdijk vs Y Gruenfeld, 1979
(B95) Sicilian, Najdorf, 6...e6, 40 moves, 1-0

Round four
Adorjan vs Tseshkovsky, 1979
(A34) English, Symmetrical, 66 moves, 1-0

S Bouaziz vs F Trois, 1979
(B06) Robatsch, 39 moves, 1-0

Y Gruenfeld vs Mednis, 1979
(C05) French, Tarrasch, 36 moves, 1-0

G Kuzmin vs Tal, 1979 
(A62) Benoni, Fianchetto Variation, 27 moves, 0-1

Larsen vs Ribli, 1979 
(E66) King's Indian, Fianchetto, Yugoslav Panno, 36 moves, 1-0

Ljubojevic vs H Van Riemsdijk, 1979
(B45) Sicilian, Taimanov, 32 moves, 1-0

Polugaevsky vs Ruben Rodriguez, 1979
(A31) English, Symmetrical, Benoni Formation, 42 moves, 1-0

Romanishin vs Miles, 1979 
(A46) Queen's Pawn Game, 25 moves, 1/2-1/2

Tarjan vs Gheorghiu, 1979
(A36) English, 21 moves, 1/2-1/2

Round five
Gheorghiu vs Larsen, 1979
(A40) Queen's Pawn Game, 22 moves, 1/2-1/2

Mednis vs Ljubojevic, 1979
(B92) Sicilian, Najdorf, Opocensky Variation, 47 moves, 1/2-1/2

Miles vs G Kuzmin, 1979
(E43) Nimzo-Indian, Fischer Variation, 41 moves, 0-1

Ribli vs Y Gruenfeld, 1979 
(D32) Queen's Gambit Declined, Tarrasch, 56 moves, 1-0

Ruben Rodriguez vs Romanishin, 1979
(E00) Queen's Pawn Game, 44 moves, 1/2-1/2

Tal vs S Bouaziz, 1979 
(E92) King's Indian, 31 moves, 1/2-1/2

F Trois vs Tarjan, 1979
(E15) Queen's Indian, 74 moves, 1/2-1/2

Tseshkovsky vs Polugaevsky, 1979 
(B84) Sicilian, Scheveningen, 51 moves, 1-0

H Van Riemsdijk vs Adorjan, 1979
(B45) Sicilian, Taimanov, 33 moves, 0-1

Round six
Adorjan vs Polugaevsky, 1979
(A36) English, 11 moves, 1/2-1/2

S Bouaziz vs Miles, 1979 
(B42) Sicilian, Kan, 49 moves, 0-1

Y Gruenfeld vs Gheorghiu, 1979
(B42) Sicilian, Kan, 38 moves, 1/2-1/2

G Kuzmin vs Ruben Rodriguez, 1979
(A62) Benoni, Fianchetto Variation, 42 moves, 1-0

Larsen vs F Trois, 1979
(A07) King's Indian Attack, 41 moves, 1/2-1/2

Ljubojevic vs Ribli, 1979 
(B92) Sicilian, Najdorf, Opocensky Variation, 27 moves, 0-1

Romanishin vs Tseshkovsky, 1979
(A46) Queen's Pawn Game, 41 moves, 1-0

Tarjan vs Tal, 1979 
(B80) Sicilian, Scheveningen, 40 moves, 0-1

H Van Riemsdijk vs Mednis, 1979
(B31) Sicilian, Rossolimo Variation, 73 moves, 1/2-1/2

Round seven
Gheorghiu vs Ljubojevic, 1979
(A27) English, Three Knights System, 33 moves, 1-0

Mednis vs Adorjan, 1979 
(A36) English, 77 moves, 0-1

Miles vs Tarjan, 1979
(A14) English, 26 moves, 1/2-1/2

Polugaevsky vs Romanishin, 1979
(A30) English, Symmetrical, 44 moves, 1-0

Ribli vs H Van Riemsdijk, 1979
(A34) English, Symmetrical, 42 moves, 1/2-1/2

Ruben Rodriguez vs S Bouaziz, 1979
(A67) Benoni, Taimanov Variation, 43 moves, 0-1

Tal vs Larsen, 1979
(B16) Caro-Kann, Bronstein-Larsen Variation, 51 moves, 1/2-1/2

F Trois vs Y Gruenfeld, 1979
(A15) English, 42 moves, 1/2-1/2

Tseshkovsky vs G Kuzmin, 1979
(C72) Ruy Lopez, Modern Steinitz Defense, 5.O-O, 32 moves, 1/2-1/2

Round eight
Adorjan vs Romanishin, 1979
(A28) English, 75 moves, 0-1

S Bouaziz vs Tseshkovsky, 1979
(B52) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 45 moves, 0-1

Y Gruenfeld vs Tal, 1979
(C83) Ruy Lopez, Open, 29 moves, 1/2-1/2

G Kuzmin vs Polugaevsky, 1979
(A30) English, Symmetrical, 54 moves, 0-1

Larsen vs Miles, 1979
(A10) English, 49 moves, 1-0

Ljubojevic vs F Trois, 1979
(C91) Ruy Lopez, Closed, 51 moves, 1-0

Mednis vs Ribli, 1979
(A13) English, 29 moves, 1/2-1/2

Tarjan vs Ruben Rodriguez, 1979 
(E74) King's Indian, Averbakh, 6...c5, 40 moves, 1-0

H Van Riemsdijk vs Gheorghiu, 1979
(B52) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 61 moves, 0-1

Round nine
Gheorghiu vs Mednis, 1979
(A16) English, 56 moves, 1-0

Miles vs Y Gruenfeld, 1979
(A65) Benoni, 6.e4, 42 moves, 1/2-1/2

Polugaevsky vs S Bouaziz, 1979
(A78) Benoni, Classical with ...Re8 and ...Na6, 49 moves, 1-0

Ribli vs Adorjan, 1979
(D85) Grunfeld, 10 moves, 1/2-1/2

Ruben Rodriguez vs Larsen, 1979 
(D90) Grunfeld, 61 moves, 0-1

Romanishin vs G Kuzmin, 1979
(B88) Sicilian, Fischer-Sozin Attack, 47 moves, 0-1

Tal vs Ljubojevic, 1979 
(E16) Queen's Indian, 57 moves, 1-0

F Trois vs H Van Riemsdijk, 1979
(B18) Caro-Kann, Classical, 16 moves, 1/2-1/2

Tseshkovsky vs Tarjan, 1979 
(B93) Sicilian, Najdorf, 6.f4, 51 moves, 0-1

Round ten
Adorjan vs G Kuzmin, 1979
(A28) English, 85 moves, 1/2-1/2

S Bouaziz vs Romanishin, 1979
(C10) French, 44 moves, 1/2-1/2

Y Gruenfeld vs Ruben Rodriguez, 1979
(B81) Sicilian, Scheveningen, Keres Attack, 29 moves, 1-0

Larsen vs Tseshkovsky, 1979
(A15) English, 36 moves, 1/2-1/2

Ljubojevic vs Miles, 1979 
(B77) Sicilian, Dragon, Yugoslav Attack, 60 moves, 0-1

Mednis vs F Trois, 1979
(C91) Ruy Lopez, Closed, 61 moves, 1/2-1/2

Ribli vs Gheorghiu, 1979 
(A56) Benoni Defense, 44 moves, 1-0

Tarjan vs Polugaevsky, 1979
(E15) Queen's Indian, 45 moves, 1/2-1/2

H Van Riemsdijk vs Tal, 1979 
(B81) Sicilian, Scheveningen, Keres Attack, 44 moves, 1/2-1/2

Round eleven
Gheorghiu vs Adorjan, 1979
(E12) Queen's Indian, 57 moves, 1-0

G Kuzmin vs S Bouaziz, 1979
(E64) King's Indian, Fianchetto, Yugoslav System, 71 moves, 1-0

Miles vs H Van Riemsdijk, 1979
(A16) English, 57 moves, 1-0

Polugaevsky vs Larsen, 1979 
(D16) Queen's Gambit Declined Slav, 39 moves, 1-0

Ruben Rodriguez vs Ljubojevic, 1979 
(A30) English, Symmetrical, 51 moves, 1-0

Romanishin vs Tarjan, 1979
(A14) English, 34 moves, 1-0

Tal vs Mednis, 1979 
(B09) Pirc, Austrian Attack, 52 moves, 1-0

F Trois vs Ribli, 1979
(B06) Robatsch, 38 moves, 0-1

Tseshkovsky vs Y Gruenfeld, 1979
(B23) Sicilian, Closed, 33 moves, 1/2-1/2

Round twelve
Adorjan vs S Bouaziz, 1979
(A30) English, Symmetrical, 54 moves, 1/2-1/2

Gheorghiu vs F Trois, 1979
(D32) Queen's Gambit Declined, Tarrasch, 44 moves, 0-1

Y Gruenfeld vs Polugaevsky, 1979 
(B96) Sicilian, Najdorf, 53 moves, 0-1

Larsen vs Romanishin, 1979 
(B92) Sicilian, Najdorf, Opocensky Variation, 40 moves, 0-1

Ljubojevic vs Tseshkovsky, 1979
(B33) Sicilian, 27 moves, 1/2-1/2

Mednis vs Miles, 1979
(B42) Sicilian, Kan, 67 moves, 0-1

Ribli vs Tal, 1979
(A14) English, 21 moves, 1/2-1/2

Tarjan vs G Kuzmin, 1979
(A17) English, 41 moves, 1/2-1/2

H Van Riemsdijk vs Ruben Rodriguez, 1979 
(B06) Robatsch, 47 moves, 0-1

Round thirteen
S Bouaziz vs Tarjan, 1979
(B92) Sicilian, Najdorf, Opocensky Variation, 49 moves, 1-0

G Kuzmin vs Larsen, 1979
(E15) Queen's Indian, 42 moves, 1-0

Miles vs Ribli, 1979
(E00) Queen's Pawn Game, 52 moves, 0-1

Polugaevsky vs Ljubojevic, 1979
(D02) Queen's Pawn Game, 31 moves, 1/2-1/2

Ruben Rodriguez vs Mednis, 1979
(E62) King's Indian, Fianchetto, 41 moves, 0-1

Romanishin vs Y Gruenfeld, 1979 
(E63) King's Indian, Fianchetto, Panno Variation, 23 moves, 1-0

Tal vs Gheorghiu, 1979 
(B50) Sicilian, 64 moves, 1-0

F Trois vs Adorjan, 1979
(A15) English, 38 moves, 0-1

Tseshkovsky vs H Van Riemsdijk, 1979
(C99) Ruy Lopez, Closed, Chigorin, 12...cd, 43 moves, 1-0

Round fourteen
Adorjan vs Tarjan, 1979
(A14) English, 25 moves, 1/2-1/2

Gheorghiu vs Miles, 1979
(A13) English, 59 moves, 1/2-1/2

Y Gruenfeld vs G Kuzmin, 1979
(B09) Pirc, Austrian Attack, 61 moves, 1/2-1/2

Larsen vs S Bouaziz, 1979 
(E66) King's Indian, Fianchetto, Yugoslav Panno, 42 moves, 1-0

Ljubojevic vs Romanishin, 1979
(C69) Ruy Lopez, Exchange, Gligoric Variation, 110 moves, 1/2-1/2

Mednis vs Tseshkovsky, 1979
(B52) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 40 moves, 0-1

Ribli vs Ruben Rodriguez, 1979 
(A99) Dutch, Ilyin-Genevsky Variation with b3, 55 moves, 1-0

F Trois vs Tal, 1979
(A54) Old Indian, Ukrainian Variation, 4.Nf3, 44 moves, 0-1

H Van Riemsdijk vs Polugaevsky, 1979
(B43) Sicilian, Kan, 5.Nc3, 23 moves, 1/2-1/2

Round fifteen
G Kuzmin vs Ljubojevic, 1979
(E39) Nimzo-Indian, Classical, Pirc Variation, 17 moves, 1/2-1/2

Miles vs F Trois, 1979
(A28) English, 37 moves, 1-0

Polugaevsky vs Mednis, 1979
(D47) Queen's Gambit Declined Semi-Slav, 41 moves, 1/2-1/2

Ruben Rodriguez vs Gheorghiu, 1979
(A56) Benoni Defense, 40 moves, 0-1

Romanishin vs H Van Riemsdijk, 1979 
(C40) King's Knight Opening, 27 moves, 1-0

Tal vs Adorjan, 1979 
(A31) English, Symmetrical, Benoni Formation, 18 moves, 1/2-1/2

Tarjan vs Larsen, 1979 
(E15) Queen's Indian, 80 moves, 1/2-1/2

Tseshkovsky vs Ribli, 1979
(B44) Sicilian, 25 moves, 1/2-1/2

Round sixteen
Adorjan vs Larsen, 1979 
(A19) English, Mikenas-Carls, Sicilian Variation, 29 moves, 1-0

Gheorghiu vs Tseshkovsky, 1979
(A16) English, 44 moves, 1/2-1/2

Y Gruenfeld vs Tarjan, 1979
(B99) Sicilian, Najdorf, 7...Be7 Main line, 40 moves, 1-0

Ljubojevic vs S Bouaziz, 1979 
(B10) Caro-Kann, 41 moves, 1/2-1/2

Mednis vs Romanishin, 1979
(C03) French, Tarrasch, 65 moves, 1/2-1/2

Ribli vs Polugaevsky, 1979
(E17) Queen's Indian, 9 moves, 1/2-1/2

Tal vs Miles, 1979 
(B52) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 54 moves, 1-0

F Trois vs Ruben Rodriguez, 1979
(D94) Grunfeld, 63 moves, 1/2-1/2

H Van Riemsdijk vs G Kuzmin, 1979 
(B07) Pirc, 69 moves, 1/2-1/2

Round seventeen
S Bouaziz vs H Van Riemsdijk, 1979
(B17) Caro-Kann, Steinitz Variation, 12 moves, 1/2-1/2

G Kuzmin vs Mednis, 1979
(E15) Queen's Indian, 20 moves, 1/2-1/2

Larsen vs Y Gruenfeld, 1979 
(B40) Sicilian, 43 moves, 1-0

Miles vs Adorjan, 1979 
(A30) English, Symmetrical, 32 moves, 0-1

Polugaevsky vs Gheorghiu, 1979
(A30) English, Symmetrical, 48 moves, 1/2-1/2

Ruben Rodriguez vs Tal, 1979 
(A07) King's Indian Attack, 69 moves, 0-1

Romanishin vs Ribli, 1979 
(E12) Queen's Indian, 26 moves, 1-0

Tarjan vs Ljubojevic, 1979
(E55) Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation, 75 moves, 1-0

Tseshkovsky vs F Trois, 1979
(C72) Ruy Lopez, Modern Steinitz Defense, 5.O-O, 35 moves, 1-0

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