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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
620Abeln Michiel (NED)2380Thorfinnsson Brag...23870-138 ≣E47Cup European Club10 Oct 2006
504Aboud Firas (SYR)2310Aboudi M (JOR)21661-042 ≣E47Ch Asian Cities (...
622Ackermann Peter1935Malzacher Wolfgang18080-126 ≣A46Verbandsliga Bade...26 Nov 2006
683Ahlander Bjorn (SWE)2423Ulfarsson Magnus ...23800-139 ≣E47Ch Iceland (team)...26 Sep 2009
457Akhsharumova Anna...2340Einarsson Bergste...21750-136 ≣E47It (open)
515Albarran Gustavo ...2255Vazquez Maximilia...21311-050 ≣E47Ch Superior Torre...
516Albarran Gustavo ...2255Martello J A (ARG)1-034 ≣E47It \
535Ali Bin Ali (UAE)2175Ghorbani Mohsen (...23170-133 ≣E47Ch Asian Cities (...
408Alipayo Rodulfo (...2380Hergott Deen (CAN)24300-127 ≣A05It (open) \
377Allacher Erwin (AUT)2124Wutte H20101-026 ≣E47Staatsliga B
421Almer JohanWelin Mats (SWE)22511-027 ≣A17It (open) (b)
347Also LuisMartin Fernandez ...21561-019 ≣E47It (open)
708Anand Viswanathan...2800Bacrot Etienne (FRA)27161-033 ≣E47It \30 Oct 2010
370Anapolsky Sergey ...2407Ostojic Nikola (SRB)24461-039 ≣E47Match \
317Andersson NiklasChmiel T (POL)0-132 ≣E47Cup Baltic (corr.)
662Andreev Stanislav...2097Nikolova Adriana ...22810-119 ≣E47It \02 Nov 2008
643Andreev Stanislav...2097Nikolova Adriana ...22811-041 ≣E47It \24 Feb 2008
88Angos AlexanderSafvat Y0-121 ≣E10Olympiad
260Anton V (GER)Bunke Wilfried (GER)20901-046E47corr.
759Arishin Sergei (KGZ)2183Nukin Ashat (KAZ)23470-125 ≣E21Memorial Izmailov...12 Aug 2012
681Aronian Levon (ARM)2768Naiditsch Arkadij...26971-049 ≣E47Ch World (active)...
726Atalik Ekaterina ...2481Nikolova Adriana ...22681-032 ≣E47Ch Turkey (team)07 Jul 2011
420Atalik Suat (BIH)2535Karason Askell O ...22301-036 ≣E47It (open)
165Averbakh Yuri L (...2445Rozhdestvensky V1-048 ≣E47Ch URS (team)
22Averbakh Yuri L (...2445Euwe Max (NED)1-045 ≣E41Tournament (candi...
293Azmaiparashvili Z...2455Franzen Jozef (SVK)23021-030 ≣E41Cup Tatran
199Baart JoanWeyerstrass Ronal...0-148E41Match
541Babula Vlastimil ...2581Luther Thomas (GER)25751-033 ≣A40Bundesliga 2001/02
501Babula Vlastimil ...2567Rigo Zsolt (SVK)22221-027 ≣E47Ch Slovakia
161Bachtiar Arovah (...2285Donner Jan-Hein (...24300-144 ≣E41It \
160Bachtiar Arovah (...2285Damjanovic Mato (...23030-140 ≣E47It \
742Baciu Stefan (ROM)2222Tudose Cristian (...18541-039 ≣E40Ch Romania17 Feb 2012
654Baciu Stefan (ROM)2242Pop Alexandru (ROM)19660-136 ≣E47Tournament (open)20 Jul 2008
656Bagapsh Astamur (...Sanakoev Grigory ...22590-120 ≣E21It (open) (a)03 Aug 2008
342Balashov Yuri S (...2540Rozentalis Eduard...24901-032 ≣E47Ch URS (1 liga) (...
222Ball Stephen (CAN)2225Dobrich Walter (CAN)22300-128 ≣E47Ch Canada
496Balogh JBoros Laszlo (HUN)19190-139 ≣E41Ch Hungary (team)...
292BarbagalloLyne Colin18700-131 ≣A17corr.
177Barczay Laszlo (HUN)2381Korchnoi Viktor (...25560-127 ≣E47Izt
58Barda Yngvar (NOR)2280Keller Dieter Ren...23590-128 ≣E41Olympiad (sf)02 Sep 1956
339BaruckerPiekarz P1-022 ≣E47corr.
638Batsiashvili Nino...2313Babujian Levon (ARM)24280-133 ≣E21It (open)17 Sep 2007
389Bazan GerardoKanefsck Gustavo ...23731-034 ≣E41It (open)
143Beggi Pierluigi (...2122Trincardi Tullio ...22351-032 ≣A17It
446Beliavsky Alexand...2620Lendwai Reinhard ...23701-039 ≣E47It (open)
224Beliavsky Alexand...2500Slutzky Leonid (ISR)23281-030 ≣E47Olympiad URS
586Belov Vladimir (RUS)2620Zhao Jun (CHN)25001-029 ≣E47It (open) \19 Feb 2005
707Ben Arzi Ido (ISR)2183Abasov Nijat Azad...25170-134 ≣E47Ch World (juniors...26 Oct 2010
741Ben Arzi Ido (ISR)2284Becking Franz-Jos...19560-138E47It (open) \29 Jan 2012
1Benko Pal C (USA)2408Szabo Laszlo (GER)22001-046 ≣E47
213Bergdahl AssarNordstrom Felix (...21810-140 ≣E41corr.
609Berkes Ferenc (HUN)2589Ilincic Zlatko (SRB)24511-035 ≣E47Ch Hungary (team)...12 Feb 2006
500Bernat Marcin (POL)2227Rybak Tomasz (POL)21631-030 ≣E41Ch Poland (team) ...
106Bertholdt DieterSzabo Laszlo (HUN)19031-029 ≣E47It
276Beutler MKuhn0-128 ≣E47corr.
706Bezemer Arno (NED)2318L'Ami Erwin (NED)26240-141 ≣E47It (open)22 Oct 2010
154Binkauskas BSalminsh Gedimins...0-139 ≣E47Cup Baltic (corr.)
714Biriukov Ilja (RUS)2410Kurilin Alexander...22711-032 ≣E47It (cat.6)20 Feb 2011
57Bisguier Arthur B...2237Turner Abe22001-046 ≣E41Memorial Rosenwald
573Biswas KarlCarlucci Paul A0-150 ≣E41It (open) \23 Oct 2003
391Bjerke Richard (NOR)2285Hultin Johan (SWE)23071-025 ≣A06It (b)
198Bjerre Troels (DEN)2320Hamann Svend (DEN)24900-130 ≣E40Tournament
455Bjornsson Bjorn F...2230Addison James1-029 ≣E21It \
100Bobotsov Milko G ...2405Kadrev Zdravko1-048A15Ch Bulgaria
704Boettger Lukas (GER)2130Hummel Dennis (GER)20201-037 ≣E47Ch Germany (unive...09 Oct 2010
346Bokor Istvan (HUN)2226Horvath Csaba (HUN)24450-149 ≣E47It (open) \
122Borisenko Georgy ...2354Kondratiev1-042 ≣E21It
119Borja MEuwe Max (NED)0-134 ≣E41Olympiad
252Boudy Julio (CUB)2188Campos Lopez Mari...23551-042 ≣E41It
385Brancaleoni Mauri...2275Delanoy Arnaud (FRA)22110-122 ≣D31It (open)
582Braun Arik (GER)2480Iotov Valentin (BUL)24140-145 ≣E47Ch World (juniors...07 Nov 2004
594Brener Ilja (GER)2334Lettieri Giuseppe...22650-150 ≣E40Cup Mitropa25 May 2005
599Brener Ilja (GER)2334Warakomski Tomasz...23960-124 ≣E40Ch Europe (junior...
247Brilla Banfalvi S...Gisbrecht Ewgeni ...24151-049 ≣E47Ch Europe (team) ...
244Brinck-Claussen B...2263Fries-Nielsen Jen...23871-042 ≣E47Ch Denmark
716Brodsky Michail (...2553De Verdier Michae...23861-050 ≣E47It (open)01 Mar 2011
566Bromberger Stefan...2440Loeffler Stefan (...24320-130 ≣E40Bundesliga 2002/03
10Bronstein David I...2432Porath Yosef (ISR)23401-049 ≣E47Olympiad
26Bronstein David I...2432Horberg Bengt-Eric1-033 ≣E41Olympiad
186Bronstein Luis (ARG)2349Schweber Samuel (...23480-138 ≣E41It
673Bublei Pavel (RUS)2189Musaev Rasul (RUS)21100-129 ≣E41Ch Russia (junior...19 Apr 2009
493Buhmann Rainer (GER)2386Schreiner Richard...21921-049 ≣E47Bundesliga (2nd) ...
34Burger Karl (USA)2310Evans Larry M (USA)24700-122 ≣E47Ch USA
470Burlov Vassili (RUS)2345Nikolenko Oleg (RUS)24900-143 ≣E41Ch Moscow
743Burnett Jim (ENG)2137Hawkins Jonathan ...24800-147 ≣E47It (open)09 Mar 2012
340BuszlerJust Joachim (GER)20470-121 ≣E47corr.
686Byklum Bjornar (NOR)2310Grandelius Nils (...25150-142 ≣E47Ch Norway (team) ...06 Nov 2009
763Byklum Bjornar (NOR)2298Vuilleumier Alex ...23261-049 ≣E47Cup European Club17 Oct 2012
372Cacho Reigadas Se...2524Corral Blanco Jua...24361-030 ≣E40It (active)
200Cardoso Carlos Al...2207Sharif Mehrshad (...23300-141 ≣E41Olympiad
223CaridiCarrettoni1-026 ≣E47corr.
382Carlsson GoranHagstrom Allan1-044 ≣E46Ch Sweden (corr.)
323CartensLaarhoven Thijs (...22110-143 ≣E47corr.
73Casas Fernando (ARG)2245Lombardy William ...24351-041 ≣E47It
345Cembran EzioDeforel Jorge Edu...1-041 ≣E47corr.
352Cenni F1620Alagna S0-125 ≣E46corr.
647Chabanon Jean-Luc...2454Garro Pierre (FRA)21411-026 ≣E21Ch France (team) ...10 Apr 2008
256Chandler Murray G...2380Speelman Jonathan...24700-144 ≣E47It
261Cherek GunterSchimron H0-129 ≣E40corr.
181Cherepkov Alexand...2395Tseshkovsky Vital...24720-141 ≣E41Ch URS