Hague Olympiad 1928; third board (53%) Petrov vs K Makarczyk, 1928  (D64) Queen's Gambit Declined, Orthodox, Rubinstein Attack, 48 moves, 1-0 Hamburg Olympiad 1930; second board (65%) Tartakower vs Petrov, 1930  (A45) Queen's Pawn Game, 32 moves, 0-1 Prague Olympiad 1931; Gold Medal on third board (72%) Petrov vs A Vajda, 1931 (B13) Caro-Kann, Exchange, 35 moves, 1-0 Folkstone Olympiad 1933; second board (54%) K Treybal vs Petrov, 1933  (B58) Sicilian, 43 moves, 0-1 Maesrich-Ostrau 1933; shared 8th Petrov vs Gruenfeld, 1933 (C88) Ruy Lopez, 90 moves, 1/2-1/2 Warsaw Olympiad 1935; first board (55%) Alekhine vs Petrov, 1935  (C11) French, 45 moves, 1-0 Munich Olympiad 1936; first board Stahlberg vs Petrov, 1936 (C11) French, 36 moves, 0-1 Munich Olympiad 1936 Petrov vs Keres, 1936  (D30) Queen's Gambit Declined, 56 moves, 1/2-1/2 Podebrady 1936; shared 10th Alekhine vs Petrov, 1936  (A84) Dutch, 79 moves, 1/2-1/2 Podebrady 1936 Petrov vs L Steiner, 1936 (D15) Queen's Gambit Declined Slav, 62 moves, 1-0 Podebrady 1936 Menchik vs Petrov, 1936  (D13) Queen's Gambit Declined Slav, Exchange Variation, 32 moves, 0-1 Kemeri 1937; Shared 1st Petrov vs Stahlberg, 1937  (D30) Queen's Gambit Declined, 37 moves, 1-0 Kemeri 1937 Petrov vs Alekhine, 1937 (A47) Queen's Indian, 50 moves, 1/2-1/2 Kemeri 1937 L Rellstab vs Petrov, 1937  (D02) Queen's Pawn Game, 26 moves, 0-1 Kemeri 1937 Petrov vs Keres, 1937 (E00) Queen's Pawn Game, 39 moves, 1/2-1/2 Kemeri 1937 Petrov vs Fine, 1937  (B03) Alekhine's Defense, 40 moves, 1-0 Kemeri 1937 M Feigin vs Petrov, 1937 (C01) French, Exchange, 20 moves, 0-1 Kemeri 1937 T Bergs vs Petrov, 1937  (D02) Queen's Pawn Game, 44 moves, 0-1 Kemeri 1937 F Apsenieks vs Petrov, 1937  (D04) Queen's Pawn Game, 55 moves, 0-1 Stockholm Olympiad 1937; first board (56%) S Herseth vs Petrov, 1937  (A40) Queen's Pawn Game, 46 moves, 0-1 Stockholm Olympiad 1937 Petrov vs T Gauffin, 1937 (D43) Queen's Gambit Declined Semi-Slav, 48 moves, 1-0 Semmering-Baden 1937; last place Capablanca vs Petrov, 1937 (E34) Nimzo-Indian, Classical, Noa Variation, 35 moves, 1/2-1/2 Semmering-Baden 1937 Petrov vs Reshevsky, 1937  (D12) Queen's Gambit Declined Slav, 102 moves, 1-0 Semmering-Baden 1937 Petrov vs Eliskases, 1937 (E46) Nimzo-Indian, 31 moves, 1-0 Semmering-Baden 1937 Petrov vs Capablanca, 1937  (D17) Queen's Gambit Declined Slav, 24 moves, 1/2-1/2 Tallin 1938 Estonia-Latvia Team Match; first board (1st) Petrov vs Keres, 1938  (A99) Dutch, Ilyin-Genevsky Variation with b3, 73 moves, 1-0 Tallin 1938 Estonia-Latvia Team Match Keres vs Petrov, 1938  (D19) Queen's Gambit Declined Slav, Dutch, 55 moves, 1/2-1/2 Lodz 1938; shared 3d Stahlberg vs Petrov, 1938  (E22) Nimzo-Indian, Spielmann Variation, 27 moves, 0-1 Lodz 1938 Petrov vs P Frydman, 1938 (B29) Sicilian, Nimzovich-Rubinstein, 43 moves, 1-0 Lodz 1938 Menchik vs Petrov, 1938 (D37) Queen's Gambit Declined, 46 moves, 0-1 Lodz 1938; Queen sacrifice E Gerstenfeld vs Petrov, 1938  (C00) French Defense, 37 moves, 0-1 Lodz 1938 Petrov vs Najdorf, 1938 (E46) Nimzo-Indian, 19 moves, 1/2-1/2 Margate 1938; clear 3d Petrov vs Alekhine, 1938  (E02) Catalan, Open, 5.Qa4, 34 moves, 1-0 Bad Harzburg 1938; shared 6th Petrov vs Eliskases, 1938 (D30) Queen's Gambit Declined, 80 moves, 1/2-1/2 Kemeri 1939; finished 8th K Ozols vs Petrov, 1939 (A22) English, 28 moves, 0-1 Kemeri 1939 Petrov vs Koblents, 1939 (A15) English, 33 moves, 1-0 Kemeri 1939 Bogoljubov vs Petrov, 1939 (C10) French, 46 moves, 1/2-1/2 Buenos Aires Olympiad 1939; Bronze Medal on first board (71%) Petrov vs Alekhine, 1939 (E02) Catalan, Open, 5.Qa4, 30 moves, 1/2-1/2 Buenos Aires Olympiad 1939 Keres vs Petrov, 1939 (E34) Nimzo-Indian, Classical, Noa Variation, 48 moves, 1/2-1/2 Buenos Aires Olympiad 1939 Petrov vs R Grau, 1939  (D02) Queen's Pawn Game, 36 moves, 1-0 Buenos Aires Olympiad 1939 Capablanca vs Petrov, 1939  (D75) Neo-Grunfeld, 6.cd Nxd5, 7.O-O c5, 8.dxc5, 30 moves, 1/2-1/2 Buenos Aires Olympiad 1939 Petrov vs V Mikenas, 1939  (E33) Nimzo-Indian, Classical, 71 moves, 1-0 Buenos Aires Olympiad 1939 Petrov vs M Czerniak, 1939 (A31) English, Symmetrical, Benoni Formation, 55 moves, 1-0 Buenos Aires Olympiad 1939 M Castillo vs Petrov, 1939 (D95) Grunfeld, 56 moves, 0-1 Buenos Aires Olympiad 1939; Queen sacrifice Petrov vs H Cordova, 1939  (E01) Catalan, Closed, 33 moves, 1-0 Rosario 1939 (rapid); Clear 1st Petrov vs V Mikenas, 1939 (E02) Catalan, Open, 5.Qa4, 59 moves, 1-0 Moscow 1940 USSR Championship; finished 10th Petrov vs Kotov, 1940  (E02) Catalan, Open, 5.Qa4, 42 moves, 1-0 Moscow 1940 USSR Championship Petrov vs Levenfish, 1940 (A53) Old Indian, 34 moves, 1-0 Moscow 1940 USSR Championship Petrov vs V Makogonov, 1940 (E02) Catalan, Open, 5.Qa4, 33 moves, 1-0 Moscow 1940 USSR Championship Petrov vs Lilienthal, 1940 (E60) King's Indian Defense, 36 moves, 1/2-1/2 Moscow 1940 USSR Championship Petrov vs M Stolberg, 1940  (E60) King's Indian Defense, 33 moves, 1-0 Moscow 1940 USSR Championship Bondarevsky vs Petrov, 1940 (D87) Grunfeld, Exchange, 32 moves, 1/2-1/2 Sverdlosk 1942; clear 2d Petrov vs Boleslavsky, 1942 (E67) King's Indian, Fianchetto, 57 moves, 1-0 53 games