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QGA, 4.e3 Notation: 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4

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
128Oesterle ChristianKuhnert Carsten1-026 ≣D21Ch Germany (junio...
288Oms Pallise Josep...2517Randazzo Adrian (...22511-029 ≣D25It (open)04 Jul 2010
32Osnos Viatcheslav...2384Kovacs Lajos D (HUN)21701-029 ≣D02?
227Palotas Peter (HUN)1836Schuetz Peter (SVK)19650-122 ≣D25Tournament (Elo) (b)09 Sep 2006
199Panelo Marcelo (ARG)2393Rodriguez Hernand...1-026 ≣D25Dos Hermanas Qual...17 Mar 2003
179Partington Anna (...2072Punnett Alan Kenn...21290-129 ≣A46Ch England (team)...
232Peredy Ferenc (HUN)2265Sulava Nenad (CRO)25210-128 ≣D20It \02 Jan 2007
24PerichVuruna Miodrag (SRB)22680-119 ≣D02It (open)
59Petkevich Jusefs ...2380Viksna T1-030 ≣D04?
230Petrekanovic Miro...2094Trbovic Bogdan (SRB)20101-023 ≣D25It (open)27 Dec 2006
146Petz Stephan1309Wolkow Michael8401-016D21Ch NRW (juniors) ...
152Philippe Denis (BEL)2019Barlow Bertrand (...21160-125D25It (cat.1)
153Pingitzer Harald ...2308Golubovic Boris (...24570-121 ≣D02It (open)
226Pipala Janusz (POL)2036Zarow Zdzislaw (POL)19601-022 ≣D25Tournament (open)27 Aug 2006
318Ponomarev Ilya2066Shestakov Alexey18061-018 ≣D25Memorial Sukharev...18 Jul 2012
40Portisch Ferenc (...2342Kovacevic Damir22001-023 ≣D25It
85Portisch Ferenc (...2342Weber Brigitte1-013 ≣D25It (open)
249Pozdniakov Vladim...2251Selin Vladimir (RUS)23450-110 ≣D02Ch City11 Feb 2008
273Prakash G B (IND)2406Fominyh Alexander...24680-115 ≣D25Cup Mayors (open)06 May 2009
254Prazak Matej1250Nespurek Petr12500-16 ≣D20Czech League 2007...27 Apr 2008
283Priadun Rudolf (RUS)2032Lapin Daniil1-030 ≣D04Ch Khakasia (open)20 Feb 2010
56Priehoda Vitezsla...2388Husek Zdenek (SVK)20331-030 ≣D25Ch Slovakia
209Primel Dominique ...2082Theon Pierre (FRA)22150-120 ≣A06Ch France (team) ...08 Jan 2005
247Przezdziecka Mart...2259Fox Pierre (BEL)18351-011 ≣D02It (open)28 Dec 2007
300Quintiliano Renat...2172Barbosa Fernando ...20851-018 ≣D25Tournament (Gr.A)
134Rapoport Evgeny (...2265Shevelev Arkady (...23850-127 ≣D25Match \
52Rauer HWurster Axel19600-122 ≣D25Regionalliga Nord
91Read RShapiro S1-025 ≣D25It (open)
201Remling Christian...2351Grund Holger (GER)24410-120 ≣D02Bundesliga (2nd) ...14 Dec 2003
150Renk Christoph (GER)1857Kluemper Willi (GER)22050-125 ≣D04It (open)
57Reshevsky Samuel ...2460Solmundarson Magn...22191-027 ≣D02It (open)
98Rivera Alberto (CUB)2370Oblitas Carlomagn...24801-028 ≣D02Memorial J.Capabl...
83Rodenas Sanches AKnudsen John22150-119 ≣D25World Tournament ...
33Rosell Kaj (DEN)2331Pedersen Erik (DEN)23991-014 ≣D25Memorial L.Rasmussen
173Rossi Giampiero (...2097Pede Lucio (ITA)18301-026 ≣D25Ch Provinciale CO02 Feb 2001
190Rottier Pierre PhilKhongaloos Zorik0-125 ≣D25It (open)
244Rubio Nevado Pedr...2100Draghici Gavril (...21060-129 ≣D25Ch Spain (team) \19 Nov 2007
114Ruether Rudolf (GER)2184Kaunzinger Albert...22251-029 ≣D02Ch Bayern
188Ruetten Ingmar (GER)2047Meins Gerlef (GER)24400-120 ≣A06It (open)
202Rusan Olga (RUS)Adamova Tuyara (RUS)18340-125 ≣D25Ch Russia (junior...
71RyanKeady0-130 ≣D25corr.
161Ryan Joseph (IRL)2291McMahon Daire (IRL)22461-030 ≣A46Zt
243Rykov M1979Solovyov Sergey V...20830-130 ≣D25Ch Region (1/2 fi...09 Oct 2007
34Sadurskis PBobkow WS0-125 ≣D25corr.
5Saemisch Friedric...2200Lehmann Heinz G (...22850-127 ≣D02It
320Sanchez Ramirez G...1603De La Hoz Sanchez...19640-126 ≣D02Tournament (open)14 Aug 2012
89Sasata Robert (CAN)2279Katz Stewart1-027 ≣D02It (open) \
19Savon Vladimir A ...2443Radulov Ivan (BUL)23061-021 ≣D25Match \
172Savon Vladimir A ...2449Smirnov Alexander...22721-022 ≣D02Cup Russia (open)
168Sbarra Marco (ITA)2246Todorov Ognjan (BUL)23810-126 ≣D25It (open)
120ScavoCristiani Cesare ...21580-120 ≣D25It (open)
192Schartmann DanielMueller Erik1-022 ≣D02Tournament (junio...
42Scheeren Peter (NED)2445Van Der Vliet Fre...22660-122 ≣D25Ch Netherlands
78Scherler HMenken Ulrich0-125 ≣D25It (open)
95Schuett Wilhelm (...2097Zieher Hartmut (GER)22390-120 ≣D25Oberliga North 19...
94Schulz Rainer (GER)2245Zieher Hartmut (GER)22390-126 ≣D02Bundesliga (2nd) ...
189Schwarz Arnd-Rued...2139Teske Henrik (GER)25380-119 ≣A05It (open)
97Scott MarkMercedes Miguel1-028 ≣A46corr.
53Semenova Lidia K ...2209Richtrova Eliska ...22681-025 ≣D02It \
302Severri Arrese Ca...1960Velten Paul (FRA)23100-121 ≣D04It (open)18 Apr 2011
37Shamkovich Leonid...2535Alexandrescu Gheo...1-024 ≣D25?
14Shatskes B (RUS)Ageichenko Genadi...23430-120 ≣D25Spartakiada URS
175Shtyrenkov Veniam...2446Kozlov Viktor Mih...23191-027 ≣D25It (cat.8)
93Silva PVLaia Carlos0-130 ≣D02Ch Portugal (team)
30Sirkia Mauri O (FIN)2350Eichhorn Ernst (SUI)0-126 ≣D25Ch World (team) (...17 Jul 1968
157Sjogren Bo (SWE)2211Valaker Ole J (NOR)21341-024 ≣D02It (open)
48Skembris Spyridon...2463Stamatopoulos Ioa...21311-024 ≣D25?
62Skulsky IanBarnes Joel (USA)22481-016 ≣A46It \
292Slavin Alexei (RUS)2426Punnett Alan Kenn...20871-018 ≣A46It (open)10 Sep 2010
218Smirnov Alexander...2201Afromeev Vladimir...25730-130A05Cup Federation (f...07 Dec 2005
293Snorek Milan (CZE)2143Lacina Filip (CZE)19921-023 ≣D02It (open)02 Oct 2010
296Socko Bartosz (POL)2657Majdan Joanna (POL)23331-025 ≣D25Ch Europe (active)19 Dec 2010
258Sokolov Igor (RUS)2225Lugovoy Dmitry (RUS)20821-028 ≣D02Cup Volga (open)
166Sokolov Ivan (NED)2611Van Veen Oscar (NED)22161-022 ≣D25It (open)
137Solomon Kenny (RSA)2215Alberto Manuel (ANG)21551-024 ≣D25Zt
256Sondermann Johann...2148Sisatto Olli (FIN)22810-127 ≣D25It (cat.2)11 Jun 2008
116Sonntag Hans-Hube...2380Hoffman Paul1-013 ≣D02It (open) (active)
250Souza Marcos Vale...2171Santos Eriberto N...17931-025 ≣D25Tournament (open)21 Mar 2008
126Sprotte Norbert (...2185Skodzek Andreas (...21881-024 ≣D02It (open)
238Stala Grzegorz (POL)1993Smirnov Alexander...22180-119 ≣D25It (open)14 Jun 2007
278Staniszewski Piot...2383Gola Karol (POL)21951-025 ≣D02It (open)18 Aug 2009
105Starck Bodo (GER)2290Winter1-028 ≣D25Ch Germany (seniors)
129Stauch Frank2075Ledfuss Guntram19601-026 ≣D02Bayern Regionalli...
3Sterner OlafAndersen Borge (DEN)23851-024 ≣D25Olympiad
117Stotskaja Elena (...2035Ciuksyte Dagne (ENG)22050-119 ≣D04It (cat.8) (w)
214Strand AndreasRaith Andreas (AUT)17041-025 ≣D02It (open) (junior...19 Aug 2005
245Suchomel Ales (CZE)1610Pochobradsky Libor12501-027D04Czech League 2007...01 Dec 2007
151Sulskis Giedrius ...2189Ilczuk Piotr (POL)23231-022D02It (open) (b)
127Summermatter Dani...2320Fux Anton (SUI)19481-028 ≣D25It (open) \
197Suto Gabor (HUN)2276Haszon David (HUN)16951-030 ≣D25It (open)
12Szekely MihalySapi Laszlo (HUN)22750-120 ≣D25Ch Budapest
125Taeger Winfried (...2265Wurster Axel20301-025 ≣D02It (open)
74TaylorLythgoe1-021 ≣D25corr.
66Templin Klaus-Die...2098Castellano Luis15001-029 ≣D25It (open)
76Thomi RoesyFlear Glenn C (ENG)24710-122 ≣D04It (open)
284Thorfinnsson Bjor...2404Kogan Artur (ISR)25260-127 ≣D25It (open)03 Mar 2010
47Townsend M Paul (...2253Seidel Juergen (GER)20561-029 ≣D25It (open)
38Trois Francisco R...2275Pimenta Jose Roberto1-023 ≣A50Ch Brazil
133Tulchinsky Mikhai...2305Nesterenko Nikita...1-023 ≣D25Cup Russia (open)
234Urkedal Frode (NOR)2281Holen Torgeir1-022 ≣D25Ch Norway (team) ...11 Mar 2007