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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
184Donner Jan-Hein (...2430Rovira Mas Jorge ...22901-036 ≣E41Olympiad
115Donner Jan-Hein (...2430Matanovic Aleksan...24900-137 ≣E41It
26Bronstein David I...2432Horberg Bengt-Eric1-033 ≣E41Olympiad
10Bronstein David I...2432Porath Yosef (ISR)23401-049 ≣E47Olympiad
491Gual Pascual Anto...2433Kolev Atanas (BUL)25580-141 ≣E47It (open)
551Khurtsidze Nino (...2433Balashov Yuri S (...25211-033 ≣A40It (open) \
60Uhlmann Wolfgang ...2434Olafsson Fridrik ...24340-130 ≣A17Olympiad10 Sep 1956
571Petkevich Jusefs ...2436Gerenski Hristo (...22041-050 ≣A04Ch Europe (seniors)
672Kozakov Mikhail (...2437Ganin Maksim (UKR)24271-040 ≣E41It \17 Apr 2009
78Panno Oscar (ARG)2438Rossetto Hector (...22851-035 ≣A17Zt
363Fiorito Fabian (ARG)2438Fernandez Murga R...22301-048 ≣E47Ch Argentina
84Panno Oscar (ARG)2438Garcia Vera Romeo1-032 ≣E41Ch Argentina
18Panno Oscar (ARG)2438Ivkov Borislav (SRB)24161-024 ≣E10Ch World (juniors)
6Nikolac Juraj (CRO)2438Matanovic Aleksan...24900-128 ≣E41Ch Yugoslavia
688Zilberman Yaacov ...2439Lerner Konstantin...25490-133 ≣E47Memorial L.Slutsk...19 Dec 2009
566Bromberger Stefan...2440Loeffler Stefan (...24320-130 ≣E40Bundesliga 2002/03
543Muse Drazen (CRO)2442Ellers Holger (GER)24251-034 ≣A05Bundesliga 2002/03
380Popov Sinisa S (SRB)2443Stanimirovic Alek...22401-031 ≣E40Ch Yugoslavia (team)
644Chuprikov Dmitry ...2443Rodin Dmitrij (RUS)24211-046 ≣E47Ch City06 Mar 2008
590Gual Pascual Anto...2443Hernando Rodrigo ...23611-040 ≣E47Ch Catalunia28 Mar 2005
315Gil Capape Javier...2444Murshed Niaz (BAN)24421-037 ≣E47Ch World (juniors...
307Gil Capape Javier...2444Janssen Han (NED)23280-147 ≣E47It \
588Porat Shi (ISR)2444Greet Andrew (ENG)24281-039 ≣E47It (cat.7)09 Mar 2005
22Averbakh Yuri L (...2445Euwe Max (NED)1-045 ≣E41Tournament (candi...
17Najdorf Miguel (POL)2445Reshevsky Samuel ...24300-135 ≣E41Match
32Najdorf Miguel (POL)2445Salas Romo Julio ...1-031 ≣E47It
165Averbakh Yuri L (...2445Rozhdestvensky V1-048 ≣E47Ch URS (team)
257Pinter Jozsef (HUN)2445Rigo Janos (HUN)23851-040 ≣E21Ch Hungary
66Gligoric Svetozar...2447Evans Larry M (USA)24701-039 ≣E21It
89Gligoric Svetozar...2447Anderson Frank R ...1-042 ≣E46Olympiad
577Gonzalez Garcia J...2447Hernandez Holden ...24731-033 ≣E47Memorial J.Capabl...12 May 2004
733Urkedal Frode (NOR)2447Tari Aryan (NOR)22241-029 ≣E47It (open)02 Oct 2011
67Gligoric Svetozar...2447Stenborg Ake (SWE)22800-148 ≣E41Zt
2Gligoric Svetozar...2447Rossolimo Nichola...24501-041 ≣E41It
28Gligoric Svetozar...2447Janosevic Dragolj...23301-032 ≣E41It
97Gligoric Svetozar...2447Pachman Ludek (GER)22781-042 ≣E47Izt
511Savon Vladimir A ...2449Smirnov Igor (UKR)24161-047 ≣E41Ch Ukraine (team)
635Kozakov Mikhail (...2449Rybak Tomasz (POL)22821-041 ≣E47Tournament (open)28 Jul 2007
265Podgaets Mikhail ...2450Romanishin Oleg M...25601-049 ≣E41?
436Sjoberg Mats (SWE)2450Kveinys Aloyzas (...25150-136 ≣E47It (open)
394Semkov Semko (BUL)2450Serrano Marhuenda...21031-022 ≣E47It (open)
406Semkov Semko (BUL)2450Padreny J1-036 ≣E47It (open)
727Gomez Ledo Robert...2452Gensana Berzunces...19971-029 ≣E41It (open)18 Jul 2011
658Kovalenko Igor (UKR)2453Kurukin Dmitry (RUS)21861-036 ≣E47It (open)12 Aug 2008
603Radziewicz Iweta ...2453Turov Maxim (RUS)25460-120 ≣E41It (cat.7)06 Nov 2005
647Chabanon Jean-Luc...2454Garro Pierre (FRA)21411-026 ≣E21Ch France (team) ...10 Apr 2008
109Geller Efim P (RUS)2455Levin M1-044 ≣A15Ch Ukraine
263Keene Raymond D (...2455Romanishin Oleg M...25600-140 ≣E41?
608Zhao Zong-Yuan (AUS)2455Van Riemsdijk Her...23811-022 ≣A05It (open)22 Jan 2006
107Geller Efim P (RUS)2455Padevsky Nikola (...23551-044 ≣E41It
23Geller Efim P (RUS)2455Kotov Alexander A...25000-142 ≣E41Tournament (candi...
103Geller Efim P (RUS)2455Osnos Viatcheslav...23841-050 ≣E47Ch URS (1/2 final)
293Azmaiparashvili Z...2455Franzen Jozef (SVK)23021-030 ≣E41Cup Tatran
666Piorun Kacper (POL)2457Bartel Mateusz (POL)26190-134 ≣D31Ch Poland05 Feb 2009
126O'kelly De Galway...2460Stockl E1-039 ≣E47It
51O'kelly De Galway...2460Rabar Braslav (YUG)1-030 ≣E47It
105O'kelly De Galway...2460Secchi Ernesto1-042 ≣E41Ch World (corr.)
416Lesiege Alexandre...2460Baragar Fletcher ...22851-047 ≣E47Ch Canada
246Lukacs Peter (HUN)2460Barczay Laszlo (HUN)24650-122 ≣E47Ch Hungary
452Iskusnyh Sergei (...2460Skvortsov A (RUS)23370-137 ≣E47Ch Russia (1/2 fi...
621Pogorelov Ruslan ...2462Hernandez Holden ...25240-139 ≣E47It (open)11 Oct 2006
629Kozhuharov Spas (...2463Daurelle Herve (FRA)22631-030 ≣E41It (open)17 Apr 2007
254Podgaets Mikhail ...2465Donchenko Anatoly...23851-033 ≣E41?
174Podgaets Mikhail ...2465Schoeneberg Manfr...22791-033 ≣E47Ch World (students)
95Evans Larry M (USA)2470Sherwin James T (...22460-142 ≣E41Ch USA
484Garcia Palermo Ca...2470Van Riemsdijk Her...24050-148 ≣E10It (cat.6)
393Murdzia Piotr (POL)2472Aleksandrov Aleks...25050-143 ≣E47Ch Europe (juniors)
757Meins Gerlef (GER)2475Poetsch Hagen (GER)24361-041 ≣E47It \14 Jul 2012
258Portisch Ferenc (...2475Rigo Janos (HUN)23851-036 ≣E41Ch Hungary
663Salem A R Saleh (...2476Amin Bassem (EGY)25601-037 ≣A40Ch Arabic Countries22 Dec 2008
364Manor Ilan (ISR)2476Horvath Jozsef M ...21040-139 ≣A46It \
700Zilka Stepan (CZE)2479Bugalski Michal (...22401-033 ≣E47It (open)08 Aug 2010
582Braun Arik (GER)2480Iotov Valentin (BUL)24140-145 ≣E47Ch World (juniors...07 Nov 2004
726Atalik Ekaterina ...2481Nikolova Adriana ...22681-032 ≣E47Ch Turkey (team)07 Jul 2011
649Mareco Sandro (ARG)2481Mahia Gustavo (ARG)24170-141 ≣A09Ch Argentina (1/2...14 Apr 2008
564Pavlovic Milos (SRB)2481Beliavsky Alexand...26600-124 ≣E47Ch Slovenia (team)
723Di Berardino Dieg...2483Aranha Filho Alva...23151-043 ≣E47Zt26 Jun 2011
633Tadic Branko (SRB)2484Ilincic Zlatko (SRB)25450-141 ≣E47Ch Bosnia & Herze...10 Jun 2007
332Lalic Bogdan (ENG)2485Ortega Lexy (ITA)24401-040 ≣E47It (cat.11)
135Sanguinetti Raul ...2485Bielicki Carlos (...23151-040 ≣E41It
397Lukacs Peter (HUN)2485Landenbergue Clau...23971-043 ≣A40It \
251Rodriguez Orestes...2485Olafsson Fridrik ...25300-126 ≣E41It (cat.10)
214Loginov Valery A ...2486Ivanov Alexander ...20330-127 ≣A05Tournament (juniors)
158Farago Ivan (HUN)2488Pogats Jozsef (HUN)22301-028 ≣E47Ch Hungary
151Farago Ivan (HUN)2488Dely Peter (HUN)23910-124 ≣E47Ch Hungary
728Salem A R Saleh (...2489Ashwath R (IND)22491-036 ≣E41Ch World (juniors...07 Aug 2011
237Tarjan James E (USA)2490Padevsky Nikola (...23551-030 ≣E41It
288Knaak Rainer (GER)2490Prandstetter Edua...24401-027 ≣E47Ch Czechoslovakia...
215Donner Jan-Hein (...2495Knaak Rainer (GER)25151-038 ≣E47It \
625Henrichs Thomas (...2498Prusikin Michael ...25640-126 ≣E47Ch Germany23 Jan 2007
702Zhukova Natalia (...2499Koneru Humpy (IND)25931-047 ≣D31Ch World (blitz) ...18 Sep 2010
224Beliavsky Alexand...2500Slutzky Leonid (ISR)23281-030 ≣E47Olympiad URS
13Kotov Alexander A...2500Matanovic Aleksan...24901-041 ≣E41Izt
611Iotov Valentin (BUL)2503Petkov Vladimir (...24431-031 ≣E47Ch Bulgaria
680Mareco Sandro (ARG)2503Corrales Fidel (CUB)26020-142E10Ch Continental Am...30 Jul 2009
324Knaak Rainer (GER)2505Georgiev Kiril (MKD)25351-038 ≣E47Match \
286Knaak Rainer (GER)2505Tischbierek Raj (...24541-042 ≣E41It
418Fominyh Alexander...2505Granovski Aleksan...23401-037 ≣E47It (open)
325Knaak Rainer (GER)2505Horvath Jozsef M ...21041-030 ≣E47It (cat.12)
632Iotov Valentin (BUL)2509Kuzubov Yuriy (UKR)25821-045 ≣E41It \07 Jun 2007