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Nimzo-Indian, Sämisch Variation, 4.a3 Bxc3+ 5.bxc3 c5 6.e3 Notation: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3

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
874Jansen Lauritz (GER)1790Grigorian Spartak...18351-022 ≣E41Ch Germany (junio...29 Dec 2010
243Dittmann Hans-Ado...2170Groenegres Wilfri...21340-142 ≣E41It (b)
294Martin Andrew D (...2445Grooten Herman (NED)23331-031 ≣E41It \
646Dufeal Julien (FRA)2141Grooten Herman (NED)24080-110 ≣E20It (open)
331Hart Theo (GER)1927Gruber W1-025 ≣E20It (open)
843Swiech Przemyslaw...1448Grudzien Piotr (POL)19771-027 ≣E41Ch Poland (junior...09 Mar 2010
856Doelker Kai (GER)1723Gruenter Martin (...21780-126 ≣E41Ch Germany (junio...06 Jun 2010
858Wohlers-Armas Fri...2011Guichard Pauline ...22930-132 ≣E20Cup France (w)27 Jun 2010
606Russell Corey (USA)2314Gulko Boris F (USA)26430-137 ≣E20Oz.com qualifier ...
316Hoffmann Alexande...2135Gutsche Klemens0-136 ≣E20Oberliga NRW 1985/86
751Shapran Nikita (RUS)1892Gutsuliak Yana (RUS)19490-133 ≣E41Memorial T.Petros...
423Bauerle PHaakonstad O1-030 ≣E20Tournament
349Grubling KarlHaas Hans (SUI)20880-141 ≣A40Ch Schleswig Hols...
932Lambert Romain (FRA)2138Hallay Axel (FRA)19831-026 ≣E20Ch Paris (open) (a)10 Jul 2012
550Vigh Bela (HUN)2385Hallossy Tibor (HUN)21391-040 ≣E20It (cat.3)
354Stafrace JHamalainen Sami (...22660-134 ≣E20Ch Europe (juniors)
226Garcia Raimundo (...2420Hamann Svend (DEN)24901-041 ≣E20Olympiad
840Stahnke Alexander...1922Haron Greg20581-070 ≣E20Ch Australia (major)06 Jan 2010
612Duchateau Thomas ...2060Harovelo Ingmar (...21980-137 ≣E20It (open)
493Schmidt Anton (GER)2153Hartl Aldo (GER)21151-038E20Bayern Landesliga...
811Schwarz Dusan (SVK)2303Hausner Ivan (CZE)24460-140 ≣E20Extraliga 2008/0918 Jan 2009
154Eriksson GHavansi Erkki E T...22230-144 ≣E20Olympiad (student...
724Gajewski Grzegorz...2515Heberla Bartlomie...25691-056 ≣E20Ch Poland03 Mar 2006
940Carow Johannes2678Heinz Axel (GER)24021-042 ≣A40Ch Germany (junio...05 Sep 2012
815Rano David (FRA)2183Heinz Timothee (FRA)22791-027 ≣E20Ch France (team) ...14 Mar 2009
444Thron CarstenHelms Sven (GER)20600-144 ≣E20Ch JBLN East 1993/94
201Maher VincentHenry Paul (IRL)23750-138 ≣E20Ch Ireland
627Holopainen Timo (...2231Henttinen Markku ...22850-138 ≣E20Ch Finland (team)...
439Ceragioli JohnHimes Harold0-130 ≣E20Ch State California
533Reduan Aband MohdHisar Simanjuntak0-136 ≣E41Ch World Cities
531Vegh Endre (HUN)2350Hoang Thanh Trang...23501-059 ≣E20Ch Hungary (team)...
319NicolaiHoekstra W0-140 ≣E20corr.
161Farias Sergio A (...2220Hollmann Jose0-188 ≣E20Ch Brazil
262Vaisanen VeikkoHonkaniemi Raimo1-037 ≣E20?
318PoschustaHort Vlastimil (GER)25450-136 ≣E20It (open)
577Heindrich Janos (...2147Horvath Karoly (HUN)21460-144 ≣E20Cup Hajduboszormeny
731Kende Gyorgy (HUN)2211Horvath Peter_ (HUN)24510-130 ≣E20It (open)20 Jun 2006
466Pribyl Martin (CZE)2390Hosek Milan (CZE)22891-048 ≣E20Czech League 1994...
889Zavadil Michal (CZE)2124Hrdina Robin (CZE)20501-029 ≣E20It \23 Apr 2011
322Ji Yunqi (CHN)2327Huang Zhengyuan (...21970-148 ≣E20Ch China
573Kaminik Aleksanda...2179Ibragimov Ildar (...25540-140 ≣E20It (open)
838Altomonte Giuseppe1773Ielapi Vito (ITA)18290-150 ≣E20It (open) (b)04 Jan 2010
900Siebrecht Sebasti...2471Illijin Neboisa (...21741-069 ≣E41Ch Switzerland (o...12 Jul 2011
547Taggatz Mario (GER)2303Illijin Neboisa (...22601-041 ≣E20It (open)
702Khattapova Aigul ...1956Ishmurzina Liliya...1-065 ≣E20Ch Privolzhskogo ...
787Kostak Tatiana (UKR)2106Ivanenko Olga (UKR)20220-131 ≣E20Ch Ukraine (1/2 f...26 May 2008
408Dommes Vladimir M...2293Ivanov Vitaly (RUS)22960-155 ≣E20It (open)
170Calero I (CUB)Ivkov Borislav (SRB)24160-142 ≣E20Memorial J.Capabl...
150Gligoric Svetozar...2447Ivkov Borislav (SRB)24161-041 ≣E20It
409Jansson Anders O ...2106Jagerflod Kent (SWE)19780-157 ≣E20Ch Sweden (corr.)
285SchreiberJakimenko A0-138 ≣E20corr.
543Lutter Ladislav (...1940Janos Jozef (SVK)21450-168 ≣E20Ch Slovakia (team...
570Roobol Martin (NED)2260Janssen Ruud (NED)23450-149 ≣E41It (open)
507Kopta Pavel (CZE)2299Jelinek Milan (CZE)20691-054 ≣E20It (open) (junior...
357LarssonJohansson1-026 ≣E20Cup Nordic (corr.)
566Henriksson Svante...2151Johansson Jukka (...21171-037 ≣E41It (open)
457Masip Tressera Or...2035Jove Grau Lluis (...22170-139 ≣E20It (open)
691Nowikow Siegfried...2004Juhasz Laszlo (HUN)22110-148 ≣E20It (open)20 May 2004
802Berczes David (HUN)2514Jurek Josef (CZE)23541-054 ≣E41It (open)04 Oct 2008
805Roubalik Jakub (CZE)2216Juricek Stanislav...21890-128 ≣E20Czech League 2008...23 Nov 2008
590Krak Tomas (SVK)2076Juricek Stanislav...22740-150 ≣E41It (open)
176Kekki YrjoKaasalainen Arvo0-139E20?
209Muratov Vladimir ...Kacaiev1-031 ≣E41Ch Kazakhstan
403Wallace John Paul...2398Kagan Naum (AUS)22130-160 ≣E20It
721Ruether Rudolf (GER)2188Kaiser Matthias (...22251-046 ≣E41Bayern Landesliga...23 Oct 2005
255Niklasson Christe...2350Kaiszauri Konstan...24200-131 ≣E20?
506Nikolic Zoran (SRB)2225Kajganovic Miodra...22701-039 ≣E41Ch Yugoslavia (1/...
498Garneli EvageliaKalesis Nikolaos ...23900-123 ≣E20It (open)
578Konovalova Olesia...2156Kalinina Vladisla...22390-139 ≣E20Ch Ukraine (junio...
430Rabara Frantisek ...1940Kalous Miroslav (...20910-149 ≣E20It (open)
397Hagstrom AllanKalveus Jan (SWE)1-039 ≣E20Ch Sweden (corr.)
29Averbakh Yuri L (...2445Kan Ilia Abramovich0-137 ≣E41Memorial N.Riumin
867Neumaier Hubert1858Kapp Martin (GER)22090-127 ≣A40It (open) \10 Aug 2010
190Popovic Petar (SRB)2485Karaklajic Nikola...23030-135 ≣E20It
647Ahern JohnKarkanaqe Ilir (ALB)23660-128 ≣E41Cup European Club...
206Nisman Boris I (RUS)2351Karpov Anatoly (RUS)26170-146 ≣A17Ch URS (team)
607Sidorchuk Dmitry ...2266Katuzian Valery (...21831-031 ≣E20It (open)
426Dauner KarlKatz Markus1-025 ≣A40Liga North Baden
228Sorri Kari Juhani...2251Keeshan M22001-037 ≣E20Olympiad
230De Carbonnel HeinzKeglevic Pavao (CRO)22030-132 ≣E20Ch Europe (team) ...
890Dobos Jozsef (HUN)2272Kelemen Gabor (HUN)21890-141 ≣E41Ch Hungary (team)...01 May 2011
388Moulton PKennedy Michael (...17991-044 ≣E20It (open)
314Mustonen Ilkka (FIN)2030Keravuori Jukka0-135 ≣A15Ch Finland (corr.)
3Stahlberg Gideon ...Keres Paul (EST)25800-127 ≣A40It
40Szabo Laszlo (HUN)1903Keres Paul (EST)25800-146 ≣E20Tournament (candi...
231Haut HKetzscher Roland ...20850-159 ≣E20corr.
653Perchik VladimirKhliastikov Georg...20820-146 ≣E20Memorial I.Stepichev
131Geller Efim P (RUS)2455Kholmov Ratmir D ...24321-034 ≣E20Memorial Przepiorka
106Vladimirov Boris ...2340Kholmov Ratmir D ...24320-141 ≣E20Ch URS (1/2 final)
891Zheleznov Valenti...2267Kigel Dmytro (UKR)22151-032 ≣A40Ch Ukraine (club)20 May 2011
732Berczes David (HUN)2415Kincs Imre (HUN)22401-041 ≣E20It (open)24 Jun 2006
687Pushin Vladimir (...2231Kiselev Vitaliy (...21621-035 ≣E41Ch Russia (junior...
135Pasman MarksKlasups Karlis1-040 ≣E41Ch Riga
903Andris Valentin1697Klemt Gerhard16071-036E20It \17 Jul 2011
604Toth Bela (ITA)2389Kluss Kai (GER)22271-030 ≣E41Bundesliga (2nd) ...
222Steudtmann Christ...2268Koehler Gerhard (...21431-032 ≣E20It (open)
102Alster DKolarov Atanas S ...24150-135 ≣E20It
107Ajanski Jordan S ...2350Kolarov Atanas S ...24150-135 ≣E20Ch Bulgaria
628Wohlers-Armas Fri...2193Kolbe Jana (GER)20481-034 ≣E20Bundesliga (2nd) ...
456Malo Guillen Jose...2189Kolev Atanas (BUL)24950-157 ≣E20It (open) \