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Nimzo-Indian, 4.e3, Main line 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Nf3 d5 6. Bd3 c5 7. 0-0 Nc6 8. a3 Bxc3+ 9. bxc3 dxc4

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
372Cacho Reigadas Se...2524Corral Blanco Jua...24361-030 ≣E40It (active)
694Potkin Vladimir (...2630Corrales Fidel (CUB)25991-035 ≣E40Memorial J.Capabl...16 Jun 2010
680Mareco Sandro (ARG)2503Corrales Fidel (CUB)26020-142E10Ch Continental Am...30 Jul 2009
428Storkebaum Karl H...Cors Heinz-Friedr...19350-137 ≣E41Memorial Weber (o...
739Ramon Solans Albe...2280Cruz Jonathan (PER)23860-122 ≣E40It (cat.2)07 Dec 2011
725Peralta Fernando ...2602Cruz Jonathan (PER)24121-042 ≣E47It (open)03 Jul 2011
162Ojanen Kaarle S (...2335Cuartas Carlos (COL)22561-026 ≣E41Olympiad
618Fedorovsky Michae...2346Czakon Jakub (POL)24860-139 ≣E47It (open)29 Jul 2006
148Kozma Julius (CSR)2380Damjanovic Mato (...23031-038 ≣E47It
173Lukic ArsenijeDamjanovic Mato (...23030-134 ≣E21It
160Bachtiar Arovah (...2285Damjanovic Mato (...23030-140 ≣E47It \
52Taimanov Mark E (...2386Darga Klaus (GER)24531-027 ≣A17It
61Taimanov Mark Ye....2387Darga Klaus Vikto...24531-031 ≣A17Olympiad12 Sep 1956
756Maiorov Nikita (BLR)2574Darmarakis Mihail...22140-140 ≣E47It (open)08 Jul 2012
629Kozhuharov Spas (...2463Daurelle Herve (FRA)22631-030 ≣E41It (open)17 Apr 2007
219Garcia Martinez S...2400Debarnot Roberto ...24201-031 ≣E47It
379Manchego CarlosDebarnot Roberto ...23550-143 ≣E21It (open) \
410Pappa Domingo (ARG)2120Deforel Jorge Edu...1-021 ≣E47corr.
345Cembran EzioDeforel Jorge Edu...1-041 ≣E47corr.
745Monticelli Romain1820De Gueldre Philip...21270-127 ≣E00Tournament (open)30 Mar 2012
607Perepelitsky Edwa...2123De Guzman Ricardo...23830-133 ≣E47It (open)19 Dec 2005
385Brancaleoni Mauri...2275Delanoy Arnaud (FRA)22110-122 ≣D31It (open)
593Mercier Pierre (FRA)1770Delort Frederic (...21700-122 ≣D31It (open)18 Apr 2005
575Van Buskirk Charl...2293Del Pilar Reynald...23061-037 ≣E41It (open)15 Feb 2004
567Zilberstein Dmitr...2379Del Pilar Reynald...23061-033 ≣E41It \
151Farago Ivan (HUN)2488Dely Peter (HUN)23910-124 ≣E47Ch Hungary
572Melkumjanc NicolajDeuber Roman (SUI)20960-121 ≣E20Ch Switzerland
189Gavrilovic Mikhail2200De Veauce Louis (...23001-047 ≣E47Ch Great Britain
737Lund Esben (DEN)2398De Verdier Michae...23861-027 ≣E47It (open)26 Nov 2011
716Brodsky Michail (...2553De Verdier Michae...23861-050 ≣E47It (open)01 Mar 2011
670Richardson John R...2298Devereaux Maxim (...23870-150 ≣E47Ch England (team)...22 Mar 2009
626Grigoriants Serge...2591Dgebuadze Alexand...25051-034 ≣E47It (open)09 Mar 2007
574Garcia Gata Jorge...2021Dimitrov Vladimir...24340-126 ≣E47Memorial Narciso ...
423Lyrberg Patrik (SWE)2405Dive Russell John...23151-023 ≣E41It
435Kovacic Peter (SLO)2173Dizdar Goran (CRO)25350-150 ≣E47It (open)
222Ball Stephen (CAN)2225Dobrich Walter (CAN)22300-128 ≣E47Ch Canada
548Grycel Kamil (POL)2295Dobrowolski Piotr...23960-136 ≣E47Ch Poland (team)
331Donaldson John W ...2390Dolgitser Konstan...22611-041 ≣E47It (open)
374Ferrer Serrano Ro...2138Dominguez Ofretor...21380-129 ≣E41It \
351Gupta Milon (GER)2270Dommisse C (NED)1-050 ≣E47It (open)
254Podgaets Mikhail ...2465Donchenko Anatoly...23851-033 ≣E41?
161Bachtiar Arovah (...2285Donner Jan-Hein (...24300-144 ≣E41It \
520Labat Antoine (FRA)2024Dourerassou Jonat...21030-142 ≣E11Ch France (team) ...
685Purdon Colin (ENG)2102Downey Keith (WLS)19310-140 ≣E47It (open)20 Oct 2009
414Parulava Temur (GER)2287Dudek Richard (GER)22450-120 ≣E41Bundesliga (2nd) ...
248KeneszDuenhaupt HW (GER)1-040 ≣E41Ch Europe (team) ...
762Maurer Fritz (SUI)2152Duruz Noe (SUI)19301-033 ≣E47It (open)15 Oct 2012
703Pesqueira Jose (ARU)1982Dzhumabayev Rinat...25470-135 ≣E41Olympiad21 Sep 2010
665Sasikiran Krishna...2669Efimenko Zahar (UKR)26540-141 ≣E47It (cat.16)28 Jan 2009
299Gneusz WEichenberg1-034 ≣E41corr.
457Akhsharumova Anna...2340Einarsson Bergste...21750-136 ≣E47It (open)
50Palmason Gudmundu...2270Einarsson Jon1-029 ≣E41It
142Lampela OlaviEkblom PE (FIN)1-035 ≣A40?
734Kamel Salama (EGY)2037Elhares Alaa17411-029 ≣E47Tournament (Elo) \15 Oct 2011
476Speelman Jonathan...2600Ellers Holger (GER)24251-040 ≣A05Bundesliga 1998/99
543Muse Drazen (CRO)2442Ellers Holger (GER)24251-034 ≣A05Bundesliga 2002/03
432Parulava Temur (GER)2287Ellers Holger (GER)23600-138 ≣E47Ch Germany (junio...
514Zuehlke Burkhard ...2173Ertl Rolf21601-034 ≣E47Bayern Regionalli...
25Taimanov Mark E (...2386Euwe Max (NED)0-141 ≣E41Tournament (candi...
119Borja MEuwe Max (NED)0-134 ≣E41Olympiad
24Reshevsky Samuel ...2430Euwe Max (NED)1-040 ≣E41Tournament (candi...
92Ojanen Kaarle S (...2335Euwe Max (NED)0-131 ≣E41Olympiad
22Averbakh Yuri L (...2445Euwe Max (NED)1-045 ≣E41Tournament (candi...
34Burger Karl (USA)2310Evans Larry M (USA)24700-122 ≣E47Ch USA
66Gligoric Svetozar...2447Evans Larry M (USA)24701-039 ≣E21It
132Trmal Jaroslav (CZE)2184Fabian Jaroslav (...21921-038 ≣E47Ch Czechoslovakia
532Degtiarev Evgeny ...2180Faizrakhmanov Gen...21900-133 ≣E41Ch Russia (junior...
693Skomorokhin Roman...2417Fedoseev Vladimir...21541-031 ≣E47Memorial R.Nezhme...03 Jun 2010
376Hager Franz (AUT)2224Felsberger Alfred...23611-035 ≣E41Staatsliga 1991/92
443Sasata Robert (CAN)2279Ferguson Bobby (USA)22320-134 ≣E21It (open)
363Fiorito Fabian (ARG)2438Fernandez Murga R...22301-048 ≣E47Ch Argentina
595Pacheco Daniel (ARG)2297Ferrufino Boris (...22111-041 ≣E21It (cat.2)12 Jun 2005
671Macias Murillo Br...2335Fier Alexander Hi...26041-033 ≣E47Ch South America ...11 Apr 2009
101Ivanov P (BUL)Filipov F (BUL)1-040 ≣E47Ch Bulgaria
489Potapov Alexander...2241Filippov Valerij ...25951-045 ≣E41Cup Russia
124Varnusz Egon (HUN)2345Flesch Janos0-142 ≣E46Ch Hungary
15Kluger Gyula (HUN)2250Florian Tibor (HUN)1-038 ≣E41Ch Hungary
576Verzhansky Alexan...2327Flyagin Dmitriy (...1-035 ≣E41Ch Russia (junior...
293Azmaiparashvili Z...2455Franzen Jozef (SVK)23021-030 ≣E41Cup Tatran
295Letic Stevan (SRB)2104Franzen Jozef (SVK)23020-140 ≣E41corr.
244Brinck-Claussen B...2263Fries-Nielsen Jen...23871-042 ≣E47Ch Denmark
386Israel Jens (GER)2193Fritze Bernd (GER)22350-124 ≣A40Oberliga Northwes...
648Stegariu Vlad-Ionut1937Frusescu Dorian-C...1-041 ≣E40Ch Romania (juniors)12 Apr 2008
740Skliba Martin (CZE)2301Fusek Lukas19841-045 ≣E47Czech League 2011...08 Jan 2012
365Ograbek Grzegorz ...2177Gaida H0-124 ≣E47Ch Poland (corr.)
672Kozakov Mikhail (...2437Ganin Maksim (UKR)24271-040 ≣E41It \17 Apr 2009
226Kozlovskaya Valen...2281Gaprindashvili No...24250-142 ≣E47Olympiad URS
216Knaak Rainer (GER)2515Garcia Gonzales G...24501-042 ≣E41Memorial J.Capabl...
676Miranda Yerisbel ...2194Garcia Pantoja Ro...23760-134 ≣E41Memorial J.Capabl...11 Jun 2009
362Garralda AGarcia Trobat Fra...22910-133E41It (open)
84Panno Oscar (ARG)2438Garcia Vera Romeo1-032 ≣E41Ch Argentina
647Chabanon Jean-Luc...2454Garro Pierre (FRA)21411-026 ≣E21Ch France (team) ...10 Apr 2008
320Hoffmann Hans (GER)2120Garscha F0-125 ≣E46corr.
358Oriansky AGaspariants I1-048 ≣E47Ch Europe (corr.)
498Mihelakis GeorgiosGelashvili Tamaz ...25311-019 ≣E47It (open)
727Gomez Ledo Robert...2452Gensana Berzunces...19971-029 ≣E41It (open)18 Jul 2011
324Knaak Rainer (GER)2505Georgiev Kiril (MKD)25351-038 ≣E47Match \
571Petkevich Jusefs ...2436Gerenski Hristo (...22041-050 ≣A04Ch Europe (seniors)
508Kantsler Boris (ISR)2524Gershon Alik (ISR)25021-030 ≣E47Ch Israel (team)
545Divljan Igor (YUG)2165Gerzhoy Leonid (CAN)23800-147 ≣E47Ch World (juniors...