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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
707Ben Arzi Ido (ISR)2183Abasov Nijat Azad...25170-134 ≣E47Ch World (juniors...26 Oct 2010
504Aboud Firas (SYR)2310Aboudi M (JOR)21661-042 ≣E47Ch Asian Cities (...
361Felice AAlagna S1-032 ≣E47corr.
210Pamperin Gerhard ...1999Albert Garrote Am...18681-028 ≣E47corr.
393Murdzia Piotr (POL)2472Aleksandrov Aleks...25050-143 ≣E47Ch Europe (juniors)
125Trmal Jaroslav (CZE)2184Altshul M1-035 ≣E47Ch Czechoslovakia
167Luckis Marcos2270Alvarez Jose_ (CUB)23680-126 ≣E47Zt
168Mecking Henrique ...2578Alvarez Jose_ (CUB)23681-022 ≣E47Zt
723Di Berardino Dieg...2483Aranha Filho Alva...23151-043 ≣E47Zt26 Jun 2011
155EngelArlamowski Jerzy ...1-045 ≣E47Cup Baltic (corr.)
79Lutikov Anatoly S...2515Aronson Lev (RUS)1-040 ≣E47Ch URS (1/2 final)
708Anand Viswanathan...2800Bacrot Etienne (FRA)27161-033 ≣E47It \30 Oct 2010
528Prudnikova Svetla...2411Baginskaite Camil...23361-034 ≣E47Ch World FIDE (KO...
640Kanakaris G (GRE)2236Bakos Balazs (HUN)24010-133 ≣E47Ch World (juniors...28 Nov 2007
429Iskusnyh Sergei (...2430Balashov Yuri S (...24900-147 ≣E47Ch Russia
416Lesiege Alexandre...2460Baragar Fletcher ...22851-047 ≣E47Ch Canada
246Lukacs Peter (HUN)2460Barczay Laszlo (HUN)24650-122 ≣E47Ch Hungary
630Hesselbarth Karlh...1878Bauer Norbert (GER)21180-133 ≣E47It (open) \16 May 2007
544Westermayer Johan...1802Baumegger Siegfri...23500-132 ≣E47It (open)
741Ben Arzi Ido (ISR)2284Becking Franz-Jos...19560-138E47It (open) \29 Jan 2012
220Dydyshko Viachesl...2512Begun Sergei M (BLR)22951-029 ≣E47?
116Goldenberg EdgardoBehrensen Jorge (...23251-040 ≣E47Ch Argentina
419Jussupow Artur (GER)2655Beliavsky Alexand...26400-139 ≣E47It
564Pavlovic Milos (SRB)2481Beliavsky Alexand...26600-124 ≣E47Ch Slovenia (team)
641Chuprikov Dmitry ...2404Belikov Vladimir ...25780-141 ≣E47Ch City09 Dec 2007
610Muir Andrew J (SCO)2341Bellia Fabrizio (...23950-136 ≣E47It (cat.7)17 Feb 2006
387Janssen Ger (NED)2228Bellin Robert (ENG)23850-136 ≣E47It (open)
229Svensson Gert (SWE)2215Bengtsson Bo (SWE)23000-138 ≣E47Ch Sweden
335Hinchey CBenjamin Joel (USA)25600-132 ≣E47It (open)
350Kozma Julius (CSR)2380Beran Josef (CZE)22700-146 ≣E47Ch Czechoslovakia...
563Jakab Attila (HUN)2402Berczes Csaba (HUN)24191-039 ≣E47It (cat.2)
322Pohl Walter (GER)2123Bernard H0-126 ≣E47corr.
751Kharitonov Alexan...2547Biriukov Nikolai ...24201-032 ≣E47It (open)18 Jun 2012
218Miettinen ReinoBjorkqvist Armas1-028 ≣E47corr.
131Hybl Jaroslav (CZE)2172Blatny Frantisek ...21120-133 ≣E47Ch Czechoslovakia
255Webb Simon (ENG)2420Boehlig Heinz Dr ...22371-049 ≣E47It \04 Jun 1978
4Martin Pedro (ARG)2021Bolbochan Julio (...24400-132 ≣E47Zt
614Sondermann Johann...2152Bolvary Tamara (HUN)20610-131 ≣E47Tournament (Elo) (a)07 Apr 2006
583Zakharchenko Arno...2273Borsuk Konstantin...22521-039 ≣E47Ch Kiev21 Jan 2005
267Endzelins Lucius ...Bouwmeester Hans ...23430-144 ≣E47Memorial Perfors ...
182Kausek KBubenik J1-037 ≣E47?
700Zilka Stepan (CZE)2479Bugalski Michal (...22401-033 ≣E47It (open)08 Aug 2010
260Anton V (GER)Bunke Wilfried (GER)20901-046E47corr.
357MrazCallens Alex22001-045 ≣E47Ch Europe (corr.)
529Santa Luis A (PUR)2161Campora Daniel H ...25360-121 ≣E47It (open)
134Luckis Marcos2270Caro1-042 ≣E47Ch Pan-American
223CaridiCarrettoni1-026 ≣E47corr.
94Ravn PalleCatozzi H0-133 ≣E47Olympiad
64Thorbergsson Frey...2340Catozzi Henry (FRA)1-042 ≣E47Olympiad20 Sep 1956
437Ruzzier Dario (ITA)1981Ceresoli Luigi (ITA)22020-145 ≣E47It (open)
317Andersson NiklasChmiel T (POL)0-132 ≣E47Cup Baltic (corr.)
334Zsinka Laszlo (HUN)2286Cladouras Panagio...23701-041 ≣E47It
505Computer \Computer \1-045 ≣E47It (computers)
513Computer \Computer \1-047 ≣E47Tournament (compu...
375Computer \Computer \0-138 ≣E47Ch World (computers)01 Jan 1991
754Peralta Fernando ...2602Cori T Deysi (PER)23861-031 ≣E47It (open)03 Jul 2012
287Gomez AmalioCorral Blanco Jua...24360-144 ≣E47Ch Asturias (team)
725Peralta Fernando ...2602Cruz Jonathan (PER)24121-042 ≣E47It (open)03 Jul 2011
618Fedorovsky Michae...2346Czakon Jakub (POL)24860-139 ≣E47It (open)29 Jul 2006
160Bachtiar Arovah (...2285Damjanovic Mato (...23030-140 ≣E47It \
148Kozma Julius (CSR)2380Damjanovic Mato (...23031-038 ≣E47It
756Maiorov Nikita (BLR)2574Darmarakis Mihail...22140-140 ≣E47It (open)08 Jul 2012
219Garcia Martinez S...2400Debarnot Roberto ...24201-031 ≣E47It
345Cembran EzioDeforel Jorge Edu...1-041 ≣E47corr.
410Pappa Domingo (ARG)2120Deforel Jorge Edu...1-021 ≣E47corr.
607Perepelitsky Edwa...2123De Guzman Ricardo...23830-133 ≣E47It (open)19 Dec 2005
151Farago Ivan (HUN)2488Dely Peter (HUN)23910-124 ≣E47Ch Hungary
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 ...
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)
351Gupta Milon (GER)2270Dommisse C (NED)1-050 ≣E47It (open)
685Purdon Colin (ENG)2102Downey Keith (WLS)19310-140 ≣E47It (open)20 Oct 2009
762Maurer Fritz (SUI)2152Duruz Noe (SUI)19301-033 ≣E47It (open)15 Oct 2012
665Sasikiran Krishna...2669Efimenko Zahar (UKR)26540-141 ≣E47It (cat.16)28 Jan 2009
457Akhsharumova Anna...2340Einarsson Bergste...21750-136 ≣E47It (open)
734Kamel Salama (EGY)2037Elhares Alaa17411-029 ≣E47Tournament (Elo) \15 Oct 2011
432Parulava Temur (GER)2287Ellers Holger (GER)23600-138 ≣E47Ch Germany (junio...
514Zuehlke Burkhard ...2173Ertl Rolf21601-034 ≣E47Bayern Regionalli...
34Burger Karl (USA)2310Evans Larry M (USA)24700-122 ≣E47Ch USA
132Trmal Jaroslav (CZE)2184Fabian Jaroslav (...21921-038 ≣E47Ch Czechoslovakia
693Skomorokhin Roman...2417Fedoseev Vladimir...21541-031 ≣E47Memorial R.Nezhme...03 Jun 2010
363Fiorito Fabian (ARG)2438Fernandez Murga R...22301-048 ≣E47Ch Argentina
671Macias Murillo Br...2335Fier Alexander Hi...26041-033 ≣E47Ch South America ...11 Apr 2009
101Ivanov P (BUL)Filipov F (BUL)1-040 ≣E47Ch Bulgaria
244Brinck-Claussen B...2263Fries-Nielsen Jen...23871-042 ≣E47Ch Denmark
740Skliba Martin (CZE)2301Fusek Lukas19841-045 ≣E47Czech League 2011...08 Jan 2012
365Ograbek Grzegorz ...2177Gaida H0-124 ≣E47Ch Poland (corr.)
226Kozlovskaya Valen...2281Gaprindashvili No...24250-142 ≣E47Olympiad URS
358Oriansky AGaspariants I1-048 ≣E47Ch Europe (corr.)
498Mihelakis GeorgiosGelashvili Tamaz ...25311-019 ≣E47It (open)
324Knaak Rainer (GER)2505Georgiev Kiril (MKD)25351-038 ≣E47Match \
508Kantsler Boris (ISR)2524Gershon Alik (ISR)25021-030 ≣E47Ch Israel (team)
545Divljan Igor (YUG)2165Gerzhoy Leonid (CAN)23800-147 ≣E47Ch World (juniors...