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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
351Panchenko AJerez Araoz Gerardo1-036 ≣A05It (open)
333Computer \Computer \1-028 ≣E15Match (active)
341Wissemann Andreas...2021Richtscheid Jens1-040 ≣E15It (open)
281Vegh Jean-Pierre ...2200Steiner Patrick1-040 ≣A05It (open) \
322Vaskin VTakhtarov V1-026 ≣A05Ch Russia (corr.)...
308Mertens Marc (LUX)2225Kleinhenz A1-039 ≣A05It (open)
323Pankratov Valery ...Guinsburg Marcelo...1-032 ≣E15Memorial Pelikan ...
267Hughes ChrisChinnici G0-127 ≣E15?
254Warren BartoldEhrman Carl0-122 ≣E15It (open)
265Castelli GCelestini Mauro (...0-139A17It (open)
257Chambers GilbertKolbert Andrews0-124 ≣E15It (open)
187Lagergren HenryOikamo Teijo0-130 ≣A46?
290MassonHuuskonen V (FIN)0-130 ≣A46?
261Zivkovic Sava (SRB)2302Chepurnoi Leonid0-134 ≣E15corr.
289Pavlov Aleksandr ...2240Sigitov V1-026 ≣E15Ch Russia (team)
310Miguel Lago Victo...2290Alcaraz Ana1-028 ≣A46Tournament (4)
205Kramer Haije J (NED)2330Stilling Walter1-030 ≣E15Memorial Blass (c...
134ArgentieroBertolucci G1-023 ≣A17corr.
249Kanzaveli VitalyRunning Jeffrey1-015 ≣A05It (open)
252Eichhorn UlrikeMeissner Christoph0-137 ≣E15Ch JBLN East 1992/93
241Meyer Holger (GER)2330Woestmann Hans Jo...1-033 ≣A05Oberliga Northwes...
195MoenkemeyerSchendel Andreas0-130 ≣E15corr.
175Kristensen Frank ...1972Shaltis V0-131 ≣A05Cup Baltic (corr.)
203Roldan CarlosCembran Ezio1-035 ≣E15corr.
179Guido Flavio (ITA)2396Fenton N0-138 ≣E15Olympiad
177Kaunismaa JuhaWelling Pauli1-039 ≣E15?
216Sandkamp Ralph (GER)2307Schlenga Klaus0-127 ≣E15Bundesliga 1989/90
208Van Hasselt AHaring0-126 ≣E15corr.
250Zarzycki WCzarnolewski P0-139 ≣E15Ch Poland (corr.)
157KocandrieKodym1-027 ≣E15?
255Zelazkowski RDybala R1-039 ≣E15Ch Poland (corr.)
235Neme JorgeInchausti Pablo0-122 ≣A05It (open) \
256Kotenko GTikhonov1-034 ≣E15corr.
273Scherer Stefan (GER)2204Winterkamp Stefan0-133 ≣A10It (open) \
16Mulder EAJMVan den Hoek Arno...0-139 ≣E15Ch Netherlands
5Reti Richard (CZE)Landau Salo (POL)1-037 ≣E15Match
68Zalys IgnasWestra Roelof1-027 ≣A05Match
7Batuev Andrey Mik...Shipunov Georgy A0-133 ≣E15Ch Leningrad
224Crespo Borrego Fr...Prieto Julio1-032 ≣A40It (open)
193KiviahoFilppula0-133 ≣E15Ch Finland (corr.)
10Najdorf Miguel (POL)2445Schaechter Izaak1-035 ≣A47Ch Poland
152Fiedler (CZE)Gulich W1-028 ≣E15corr.
207Moen Steinar (NOR)2217Hoos B0-140 ≣A15Ch NATO (team)
223Marin Aso Josep L...Matamoros A1-025 ≣A05It (open)
178Overgaard Christi...2250Ustergard Jens1-037 ≣A05Ch Denmark (junio...
192Cederquist BengtMoeller HJ1-040 ≣A40Europe Tournament...
138Wright JohnPeterson George1-032 ≣E15It (corr.)
19Rossetto Hector (...2285Stahlberg Gideon ...0-136 ≣E15It
174Kerik MKuehnel H1-031 ≣E15Cup Baltic (corr.)
21Steiner Lajos (HUN)Goldstein Maurice...1-036 ≣E15Ch NSW (play-off)
23Filipcic MPoljakov1-030 ≣A46Ch Yugoslavia
27Katetov Miroslav ...Rohacek Vladimir ...1-040 ≣A05Memorial K.Treybal
28Sajtar Jaroslav (...Vymetal Vaclav (CZE)1-027 ≣E15Memorial Dobrusky...22 Jan 1946
70Maher Vincent (IRE)Sapre Ramchandra ...0-137 ≣E15Olympiad (sf)05 Sep 1956
31Szapiro MarekPlater Kazimierz ...1-035 ≣A47Ch Poland08 Aug 1946
33Batik FrantisekNapolitano Mario ...0-139 ≣E15?
34Gruber BratoljubBozic Alexander0-136 ≣E15Ch Yugoslavia
188Lehtonen KalervoRantanen Veikko1-039 ≣E15?
40Shocron Ruben (USA)2259Fuentes Juan Manuel1-038 ≣E15Match \
37Lilienthal Andor ...2385Alatortsev Vladim...0-127 ≣A46Ch URS
123Raivio Yrjo (FIN)2067Fly Bjarne1-023 ≣E15Ch Denmark (juniors)
39Kramer Haije J (NED)2330Baay J1-036 ≣E15It
1Przepiorka Dawid ...Ahues Carl O (GER)0-131 ≣A47
42Brunet PhilipTherien Jules1-029 ≣E15Ch Canada
43Aratovsky NikolayRovner Dmitry (RUS)1-034 ≣E15Ch URS (1/2 final)
29Koblents Alexande...Prucha Karel (CZE)1-027 ≣E15Match \
45Schindler JosefPfeiffer Gerhard ...0-129 ≣E15Ch BRD
2Takacs Sandor (HUN)Asztalos Lajos (HUN)0-130 ≣A15It
85Horberg Beng EricStahlberg Gideon ...0-132A47It
231Van Roosmalen ABrus B1-033 ≣E15corr.
49Bolbochan Julio (...2440Wexler Francisco1-030 ≣E15Zt
4Rejfir Josef (CZE)Thelen Bedrich (CZE)1-035 ≣A47Tournament
51Millin PaoloKeller Hans0-120 ≣A46It
52Letelier Rene (CHI)2151Maccioni Seisdedo...1-040 ≣A47Ch Chile
6Vidmar Milan Sr (...Colle Edgard (BEL)1-033 ≣A46It
56Platz HansStahlberg Gideon ...0-138 ≣A46Memorial G.Maroczy
58Szabo Laszlo (HUN)1903Platz Hans1-029 ≣A05Memorial G.Maroczy
59Porreca Giorgio (...Del Vecchio Lucio1-017 ≣A05Ch Italy
8Vallve JKahn Victor0-137 ≣A47It
156Karlsson RalfKolsi Ari1-033 ≣E15?
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
67Stahlberg Gideon ...Pfeiffer Gerhard ...1-036 ≣A04It
69Uhlmann Wolfgang ...2434Safvat Yousof (IRN)1-026 ≣E15Olympiad (sf)02 Sep 1956
90Borchardt Adam (POL)1967Lachut Jan1-036 ≣A46Ch Poland (team)
12Kolski JosekRegedzinski Teodor0-137 ≣E15It
163Gonzalez Trelles ...Reglero Andres1-033 ≣A47Ch Asturias (team)
165Nedeljkovic Aleks...2265Champagne P1-035 ≣A05Ch USA (corr.)
76Kolarov Atanas S ...2415Chipev T (BUL)1-034 ≣E15Ch Bulgaria
15Treybal Karel (CZE)Opocensky Karel (...0-137 ≣E15Ch Czechia
115Gil AntonioArfwedson Gerhard1-029 ≣A15corr.
66Del Vecchio LucioCastaldi Vincenzo...0-126 ≣E15?
81Huguet Bernard (FRA)2146Conan Claude0-125 ≣A15It
18Maderna Carlos H ...Bolbochan Jacobo ...0-136 ≣E15It
93Edelsvard OlleWikstrom Birger1-034 ≣E15corr.
84Hanks John (AUS)2171Hester David A1-021 ≣E15Ch Australia12 Jan 1963
86Baumbach Friedric...2239Kuttner Uwe1-039 ≣E15Ch DDR
20Weil HWatzl Leopold1-031 ≣A47Ch City
356Perez Juan M (CUB)2239Sabater A1-039 ≣E15Ch Spain (team) (...