round 1 N Cortlever vs T D van Scheltinga, 1950 (B18) Caro-Kann, Classical, 40 moves, 1/2-1/2 J H Donner vs V Soultanbeieff, 1950 (D45) Queen's Gambit Declined Semi-Slav, 52 moves, 1/2-1/2 H Kramer vs C Hugot, 1950 (A80) Dutch, 37 moves, 1/2-1/2 Rossolimo vs Euwe, 1950 (C53) Giuoco Piano, 31 moves, 1/2-1/2 F van Seters vs F Henneberke, 1950 (C90) Ruy Lopez, Closed, 39 moves, 1-0 round 2 Euwe vs H Kramer, 1950 (E22) Nimzo-Indian, Spielmann Variation, 41 moves, 1-0 F Henneberke vs N Cortlever, 1950 (D04) Queen's Pawn Game, 65 moves, 1/2-1/2 C Hugot vs Rossolimo, 1950 (E33) Nimzo-Indian, Classical, 73 moves, 0-1 V Soultanbeieff vs T D van Scheltinga, 1950 (A48) King's Indian, 44 moves, 0-1 F van Seters vs J H Donner, 1950 (E48) Nimzo-Indian, 4.e3 O-O 5.Bd3 d5, 53 moves, 0-1 round 3 N Cortlever vs C Hugot, 1950 (C15) French, Winawer, 40 moves, 1-0 J H Donner vs F Henneberke, 1950 (D37) Queen's Gambit Declined, 31 moves, 1-0 Euwe vs T D van Scheltinga, 1950  (D30) Queen's Gambit Declined, 55 moves, 1-0 H Kramer vs F van Seters, 1950 (A44) Old Benoni Defense, 25 moves, 1/2-1/2 Rossolimo vs V Soultanbeieff, 1950 (B10) Caro-Kann, 41 moves, 1-0 round 4 F Henneberke vs H Kramer, 1950 (A07) King's Indian Attack, 47 moves, 1/2-1/2 C Hugot vs J H Donner, 1950 (E49) Nimzo-Indian, 4.e3, Botvinnik System, 40 moves, 0-1 V Soultanbeieff vs N Cortlever, 1950 (D11) Queen's Gambit Declined Slav, 57 moves, 0-1 T D van Scheltinga vs Rossolimo, 1950 (A97) Dutch, Ilyin-Genevsky, 28 moves, 1-0 F van Seters vs Euwe, 1950 (C77) Ruy Lopez, 73 moves, 1-0 round 5 N Cortlever vs F van Seters, 1950 (B84) Sicilian, Scheveningen, 40 moves, 1/2-1/2 J H Donner vs H Kramer, 1950 (E00) Queen's Pawn Game, 42 moves, 1-0 Rossolimo vs F Henneberke, 1950 (B10) Caro-Kann, 26 moves, 1/2-1/2 V Soultanbeieff vs Euwe, 1950  (D32) Queen's Gambit Declined, Tarrasch, 26 moves, 0-1 T D van Scheltinga vs C Hugot, 1950 (A99) Dutch, Ilyin-Genevsky Variation with b3, 39 moves, 1-0 round 6 Euwe vs F Henneberke, 1950 (B18) Caro-Kann, Classical, 42 moves, 1-0 C Hugot vs F van Seters, 1950 (A47) Queen's Indian, 28 moves, 0-1 Rossolimo vs N Cortlever, 1950 (B50) Sicilian, 20 moves, 1/2-1/2 V Soultanbeieff vs H Kramer, 1950 (A47) Queen's Indian, 36 moves, 1-0 T D van Scheltinga vs J H Donner, 1950 (D56) Queen's Gambit Declined, 48 moves, 0-1 round 7 J H Donner vs Rossolimo, 1950  (A84) Dutch, 32 moves, 1/2-1/2 Euwe vs N Cortlever, 1950 (D15) Queen's Gambit Declined Slav, 42 moves, 1/2-1/2 F Henneberke vs C Hugot, 1950 (D74) Neo-Grunfeld, 6.cd Nxd5, 7.O-O, 58 moves, 1-0 H Kramer vs T D van Scheltinga, 1950 (D37) Queen's Gambit Declined, 41 moves, 1-0 F van Seters vs V Soultanbeieff, 1950 (D55) Queen's Gambit Declined, 41 moves, 1/2-1/2 round 8 N Cortlever vs J H Donner, 1950  (C12) French, McCutcheon, 62 moves, 1/2-1/2 C Hugot vs Euwe, 1950 (E53) Nimzo-Indian, 4.e3, 43 moves, 1/2-1/2 Rossolimo vs H Kramer, 1950 (B52) Sicilian, Canal-Sokolsky (Rossolimo) Attack, 37 moves, 1-0 V Soultanbeieff vs F Henneberke, 1950 (D11) Queen's Gambit Declined Slav, 50 moves, 0-1 T D van Scheltinga vs F van Seters, 1950 (E67) King's Indian, Fianchetto, 45 moves, 1-0 round 9 J H Donner vs Euwe, 1950 (D50) Queen's Gambit Declined, 20 moves, 1/2-1/2 F Henneberke vs T D van Scheltinga, 1950 (B11) Caro-Kann, Two Knights, 3...Bg4, 52 moves, 1/2-1/2 C Hugot vs V Soultanbeieff, 1950 (A00) Uncommon Opening, 41 moves, 1/2-1/2 H Kramer vs N Cortlever, 1950 (B30) Sicilian, 40 moves, 1/2-1/2 F van Seters vs Rossolimo, 1950 (A83) Dutch, Staunton Gambit, 29 moves, 0-1 45 games