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Queen's Indian, Old Main line, 9.Qxc3 Notation: 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3

In each game under Location you see masterchessopen.com but it's not a valid website, so please don't use it. Claus Gamborg, Jan. 2023

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#WhiteRatingBlackRatingResultMovesECOTournamentDate
1Przepiorka Dawid ...Ahues Carl O (GER)0-131 ≣A47
2Takacs Sandor (HUN)Asztalos Lajos (HUN)0-130 ≣A15It
3Makogonov Vladimi...Botvinnik Mikhail...26300-124 ≣A46Ch URS
4Rejfir Josef (CZE)Thelen Bedrich (CZE)1-035 ≣A47Tournament
5Reti Richard (CZE)Landau Salo (POL)1-037 ≣E15Match
6Vidmar Milan Sr (...Colle Edgard (BEL)1-033 ≣A46It
7Batuev Andrey Mik...Shipunov Georgy A0-133 ≣E15Ch Leningrad
8Vallve JKahn Victor0-137 ≣A47It
9Monticelli Mario ...Najdorf Miguel (POL)24450-135 ≣E15Olympiad
10Najdorf Miguel (POL)2445Schaechter Izaak1-035 ≣A47Ch Poland
11Simonson AlbertDenker Arnold S (...22931-039 ≣A05Ch USA
12Kolski JosekRegedzinski Teodor0-137 ≣E15It
13Euwe Max (NED)Fairhurst William...23001-039 ≣E15Match \05 Jul 1938
14Euwe Max (NED)Keres Paul (EST)25800-134 ≣E15Match
15Treybal Karel (CZE)Opocensky Karel (...0-137 ≣E15Ch Czechia
16Mulder EAJMVan den Hoek Arno...0-139 ≣E15Ch Netherlands
17Iliesco Juan TraianNajdorf Miguel (POL)24450-127 ≣A05It
18Maderna Carlos H ...Bolbochan Jacobo ...0-136 ≣E15It
19Rossetto Hector (...2285Stahlberg Gideon ...0-136 ≣E15It
20Weil HWatzl Leopold1-031 ≣A47Ch City
21Steiner Lajos (HUN)Goldstein Maurice...1-036 ≣E15Ch NSW (play-off)
22Maderna Carlos H ...Najdorf Miguel (POL)24450-130 ≣E15Memorial R.Grau
23Filipcic MPoljakov1-030 ≣A46Ch Yugoslavia
24Kottnauer Cenek (...2370Denker Arnold S (...22931-032 ≣A15It
25Lundin Erik (SWE)2375Yanofsky D A (CAN)24101-040 ≣A05It
26Szabo Laszlo (HUN)1903Denker Arnold S (...22930-139 ≣E15It
27Katetov Miroslav ...Rohacek Vladimir ...1-040 ≣A05Memorial K.Treybal
28Sajtar Jaroslav (...Vymetal Vaclav (CZE)1-027 ≣E15Memorial Dobrusky...22 Jan 1946
29Koblents Alexande...Prucha Karel (CZE)1-027 ≣E15Match \
30Szapiro MarekSliwa Bogdan (POL)22350-136 ≣A46Ch Poland30 Jul 1946
31Szapiro MarekPlater Kazimierz ...1-035 ≣A47Ch Poland08 Aug 1946
32Mnichowicz ESliwa Bogdan (POL)22350-136 ≣A46Ch Poland09 Aug 1946
33Batik FrantisekNapolitano Mario ...0-139 ≣E15?
34Gruber BratoljubBozic Alexander0-136 ≣E15Ch Yugoslavia
35Pirc Vasja (YUG)Golombek Harry (ENG)23201-031 ≣E15It \
36Szabo Laszlo (HUN)1903Luckis Marcos22701-039 ≣A05It
37Lilienthal Andor ...2385Alatortsev Vladim...0-127 ≣A46Ch URS
38Lilienthal Andor ...2385Keres Paul (EST)25800-131 ≣E15Ch URS
39Kramer Haije J (NED)2330Baay J1-036 ≣E15It
40Shocron Ruben (USA)2259Fuentes Juan Manuel1-038 ≣E15Match \
41Van Scheltinga Th...2325Golombek Harry (ENG)23201-039 ≣E15Match \12 Sep 1948
42Brunet PhilipTherien Jules1-029 ≣E15Ch Canada
43Aratovsky NikolayRovner Dmitry (RUS)1-034 ≣E15Ch URS (1/2 final)
44Najdorf Miguel (POL)2445Kottnauer Cenek (...23701-036 ≣E15It
45Schindler JosefPfeiffer Gerhard ...0-129 ≣E15Ch BRD
46Gereben Erno (SUI)2320Pogats Jozsef (HUN)22301-040 ≣A47Ch Hungary
47Henneberke Frans ...Matanovic Aleksan...24900-140 ≣A46Match \22 Jun 1950
48Baron ScudierSmith Kenneth R (...23700-129 ≣A05It (open)
49Bolbochan Julio (...2440Wexler Francisco1-030 ≣E15Zt
50Euwe Max (NED)Evans Larry M (USA)24700-139 ≣E15It
51Millin PaoloKeller Hans0-120 ≣A46It
52Letelier Rene (CHI)2151Maccioni Seisdedo...1-040 ≣A47Ch Chile
53Lipnitsky Isaak (...Taimanov Mark E (...23861-034 ≣E15Ch URS (team)
54Golombek Harry (ENG)2320Nedeljkovic Sreck...21880-139 ≣E15It
55Bouwmeester Hans ...2343Kramer Haije J (NED)23300-137 ≣E15It
56Platz HansStahlberg Gideon ...0-138 ≣A46Memorial G.Maroczy
57Szabo Laszlo (HUN)1903Keres Paul (EST)25801-040 ≣A15Memorial G.Maroczy
58Szabo Laszlo (HUN)1903Platz Hans1-029 ≣A05Memorial G.Maroczy
59Porreca Giorgio (...Del Vecchio Lucio1-017 ≣A05Ch Italy
60Doerner CharlesTeschner Rudolf (...22950-133 ≣E15Olympiad
61Ragozin Viachesla...Cherepkov Alexand...23951-032 ≣E15Ch URS (1/2 final)
62Eidelman MauricioCruz Walter Oswal...0-138 ≣A46It
63Santiago Oliveira...Tavares Da Silva ...0-138 ≣E00Ch Brazil
64Uhlmann Wolfgang ...2379Koch Berthold (GDR)0-126 ≣E15Ch Germany
65Fuderer Andrija (...Geller Efim P (RUS)24551-036 ≣E15Olympiad
66Del Vecchio LucioCastaldi Vincenzo...0-126 ≣E15?
67Stahlberg Gideon ...Pfeiffer Gerhard ...1-036 ≣A04It
68Zalys IgnasWestra Roelof1-027 ≣A05Match
69Uhlmann Wolfgang ...2434Safvat Yousof (IRN)1-026 ≣E15Olympiad (sf)02 Sep 1956
70Maher Vincent (IRE)Sapre Ramchandra ...0-137 ≣E15Olympiad (sf)05 Sep 1956
71Moehring Guenther...2294Blatny Frantisek ...21120-124 ≣A40It (a)30 Dec 1956
72Barcza Gedeon (HUN)2435Kluger Gyula (HUN)22500-139 ≣A05Ch Hungary
73Najdorf Miguel (POL)2445Reshevsky Samuel ...24300-139 ≣E15It
74Espinosa Rafael M...2403Luckis Marcos22701-032 ≣A46Ch Argentina
75Reyes Jara Pablo ...2053Filipowicz Andrze...23301-038 ≣A46Olympiad
76Kolarov Atanas S ...2415Chipev T (BUL)1-034 ≣E15Ch Bulgaria
77Ivkov Borislav (SRB)2416Van Den Berg Care...24101-037 ≣E15It \
78Ivkov Borislav (SRB)2416Janosevic Dragolj...23301-033 ≣A15It
79Darga Klaus (GER)2453Kupper Josef (SUI)23741-031 ≣E15Cup Clare Benedict
80Bilek Istvan (HUN)2375Honfi Karoly (HUN)23651-018 ≣A13Memorial Asztalos28 Jul 1962
81Huguet Bernard (FRA)2146Conan Claude0-125 ≣A15It
82Felmeri Janos (HUN)2275Tompa Janos (HUN)23981-023 ≣E15Tournament
83Barcza Gedeon (HUN)2435Trincardi Tullio ...22351-032 ≣A05It
84Hanks John (AUS)2171Hester David A1-021 ≣E15Ch Australia12 Jan 1963
85Horberg Beng EricStahlberg Gideon ...0-132A47It
86Baumbach Friedric...2239Kuttner Uwe1-039 ≣E15Ch DDR
87Olivera AlfredoVillarroel Geber ...22901-027 ≣E15Olympiad
88Rakovsky EmileNovak Ervin (CZE)22251-039 ≣A05It
89Keller EdithDomsgen Christina...21001-033 ≣E15Zt (w)
90Borchardt Adam (POL)1967Lachut Jan1-036 ≣A46Ch Poland (team)
91Hort Vlastimil (GER)2466Belkadi Ridha (TUN)23451-035 ≣E15Olympiad
92Ivkov Borislav (SRB)2416Korchnoi Viktor (...25560-136 ≣E15Olympiad
93Edelsvard OlleWikstrom Birger1-034 ≣E15corr.
94Vaganian Rafael A...2577Lombard Andre (SUI)23501-040 ≣E15Ch Europe (juniors)
95Mista Ladislav (CZE)2158Korchnoi Viktor (...25560-136 ≣A17Ch Czechoslovakia
96Ocampo Raul (MEX)2260Luckis Marcos22701-040 ≣A05Ch Argentina (qual)
97Filip Miroslav (CZE)2465Korchnoi Viktor (...25560-137 ≣E15Olympiad
98Naranja Renato (PHI)2221Johannessen Svein...22730-140 ≣A15Olympiad
99Espig Lutz (GER)2460Liebert Heinz (GER)24200-133 ≣A05It
100Gerber KMueller Erich (GER)21401-025 ≣E15corr.