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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
546Davydenko Andrey ...2080Novoselsky Oleg (...21950-140 ≣E46Memorial Y.Sakhar...
715Nieto Emanuel (BEL)2275Tjiam Dharma (NED)23820-140 ≣E41Ch Belgium (team)...27 Feb 2011
135Sanguinetti Raul ...2485Bielicki Carlos (...23151-040 ≣E41It
101Ivanov P (BUL)Filipov F (BUL)1-040 ≣E47Ch Bulgaria
719Wojtaszek Radosla...2704Sasikiran Krishna...26890-140 ≣E47It (cat.18)17 May 2011
180ZverevicMarkovic Igor (CRO)22070-140 ≣E41Tournament (corr.)
590Gual Pascual Anto...2443Hernando Rodrigo ...23611-040 ≣E47Ch Catalunia28 Mar 2005
760Jacso Adam (HUN)2224Kozma Gabor19591-040 ≣E41It (open)19 Aug 2012
497Cody Philip CMurden Clive1-040 ≣E47corr. ICCF
240Christoffel Marti...Sarosi Zoltan (HUN)22971-040 ≣E47Olympiad (corr.)
499Kodentsov Grisja ...2275Werle Jan (NED)22161-040 ≣E20Ch Netherlands (j...
540Salo Heikki (FIN)2279Sorsa Nuutti (FIN)22311-040 ≣E47Ch Finland (team)...
263Keene Raymond D (...2455Romanishin Oleg M...25600-140 ≣E41?
332Lalic Bogdan (ENG)2485Ortega Lexy (ITA)24401-040 ≣E47It (cat.11)
76Dittmann SieghardOlafsson Fridrik ...24340-140 ≣E41Olympiad (student...
257Pinter Jozsef (HUN)2445Rigo Janos (HUN)23851-040 ≣E21Ch Hungary
37Milic Borislav (YUG)Matanovic Aleksan...24900-140 ≣E41Match
248KeneszDuenhaupt HW (GER)1-040 ≣E41Ch Europe (team) ...
310Genovese ESleidinger GR1-040 ≣E46?
295Letic Stevan (SRB)2104Franzen Jozef (SVK)23020-140 ≣E41corr.
79Lutikov Anatoly S...2515Aronson Lev (RUS)1-040 ≣E47Ch URS (1/2 final)
243Ivanov Igor V (CAN)2424Popov Nikolay (MDA)24100-140 ≣E41Tournament
140Herren WalterBernhardt Rolf (GER)22880-140 ≣E41It
672Kozakov Mikhail (...2437Ganin Maksim (UKR)24271-040 ≣E41It \17 Apr 2009
464Michenka Jozef (CZE)2330Machycek Lubomir ...22550-140 ≣E47Ch MSS
465Schoen Wolfram (GER)2410Hall Jesper (SWE)24600-140 ≣E47Bundesliga (2nd) ...
108Uhlmann Wolfgang ...2379Lokvenc Josef (AUT)1-040 ≣E47It
110Ivkov Borislav (SRB)2416Wexler Bernardo (...1-040 ≣E41?
234Just Joachim (GER)2047Potthammel Joerg ...21300-140 ≣A17Ch DDR (corr.)
213Bergdahl AssarNordstrom Felix (...21810-140 ≣E41corr.
699Lund Esben (DEN)2401Sammalvuo Tapani ...24651-040 ≣A40Memorial Heini Ol...24 Jul 2010
187Teschner Rudolf (...2295Rossolimo Nichola...24500-140 ≣E47It
116Goldenberg EdgardoBehrensen Jorge (...23251-040 ≣E47Ch Argentina
685Purdon Colin (ENG)2102Downey Keith (WLS)19310-140 ≣E47It (open)20 Oct 2009
476Speelman Jonathan...2600Ellers Holger (GER)24251-040 ≣A05Bundesliga 1998/99
665Sasikiran Krishna...2669Efimenko Zahar (UKR)26540-141 ≣E47It (cat.16)28 Jan 2009
550Gutierrez Lopez C...2172Lorenzini Martin ...23751-041 ≣E47It (open)
430Mertanen Janne (FIN)2369Nokso-Koivisto An...22350-141 ≣E47Ch Finland (team)...
345Cembran EzioDeforel Jorge Edu...1-041 ≣E47corr.
649Mareco Sandro (ARG)2481Mahia Gustavo (ARG)24170-141 ≣A09Ch Argentina (1/2...14 Apr 2008
334Zsinka Laszlo (HUN)2286Cladouras Panagio...23701-041 ≣E47It
331Donaldson John W ...2390Dolgitser Konstan...22611-041 ≣E47It (open)
73Casas Fernando (ARG)2245Lombardy William ...24351-041 ≣E47It
648Stegariu Vlad-Ionut1937Frusescu Dorian-C...1-041 ≣E40Ch Romania (juniors)12 Apr 2008
697Kapnisis Spyridon...2511Pavlidou Ekaterin...21911-041 ≣E47Cup Artemis (open)14 Jul 2010
459Valden Petros (GRE)2243Tzoumbas Anastasi...23800-141 ≣E41Ch Greece (team)
13Kotov Alexander A...2500Matanovic Aleksan...24901-041 ≣E41Izt
2Gligoric Svetozar...2447Rossolimo Nichola...24501-041 ≣E41It
273Lukacs Peter (HUN)2405Pinkas Karol (POL)23201-041 ≣E21It (a)
25Taimanov Mark E (...2386Euwe Max (NED)0-141 ≣E41Tournament (candi...
706Bezemer Arno (NED)2318L'Ami Erwin (NED)26240-141 ≣E47It (open)22 Oct 2010
635Kozakov Mikhail (...2449Rybak Tomasz (POL)22821-041 ≣E47Tournament (open)28 Jul 2007
634Kashlinskaya Alin...2263Ogleznev Alexandr...22621-041 ≣E47It \22 Jul 2007
74Taimanov Mark E (...2386Antoshin Vladimir...22501-041 ≣E41Ch URS
488Nor Igor (ISR)2280Jagodzinski Andre...22150-141 ≣E47It (cat.2)
633Tadic Branko (SRB)2484Ilincic Zlatko (SRB)25450-141 ≣E47Ch Bosnia & Herze...10 Jun 2007
491Gual Pascual Anto...2433Kolev Atanas (BUL)25580-141 ≣E47It (open)
643Andreev Stanislav...2097Nikolova Adriana ...22811-041 ≣E47It \24 Feb 2008
200Cardoso Carlos Al...2207Sharif Mehrshad (...23300-141 ≣E41Olympiad
503Rogers Ian (AUS)2574Solomon Stephen J...24351-041 ≣E47It (cat.10)
141Lengyel Levente (...2293Somogyi Istvan (HUN)22051-041 ≣E47Ch Hungary
313Portisch Ferenc (...2405Rigo Janos (HUN)23190-141 ≣E47It (open)
641Chuprikov Dmitry ...2404Belikov Vladimir ...25780-141 ≣E47Ch City09 Dec 2007
562Pelletier Yannick...2589Lutz Christopher ...25961-041 ≣E47It (cat.16)
166Petrosian Tigran ...2580Spassky Boris V (...25481-041 ≣E47Ch World (match)
595Pacheco Daniel (ARG)2297Ferrufino Boris (...22111-041 ≣E21It (cat.2)12 Jun 2005
533Zolotov Bogdan (RUS)2207Chuiko Alexander ...24130-141 ≣E40Ch Tula Region (o...
183Shashin Alexsande...2350Osnos Viatcheslav...23841-041 ≣E47Ch Leningrad
181Cherepkov Alexand...2395Tseshkovsky Vital...24720-141 ≣E41Ch URS
250Lerner Konstantin...2515Zaichik Gennadi (...24571-041 ≣E41Memorial V.Karsel...
757Meins Gerlef (GER)2475Poetsch Hagen (GER)24361-041 ≣E47It \14 Jul 2012
77SehlstedtBlatny Frantisek ...21120-141 ≣E41Olympiad (student...
660Vazquez Renier (ESP)2530Vassallo Mauricio...24181-041 ≣E47It (open)24 Aug 2008
64Thorbergsson Frey...2340Catozzi Henry (FRA)1-042 ≣E47Olympiad20 Sep 1956
286Knaak Rainer (GER)2505Tischbierek Raj (...24541-042 ≣E41It
471Khasin Abram (RUS)2420Leonidov Vitaly (...23650-142 ≣E41It (seniors)
216Knaak Rainer (GER)2515Garcia Gonzales G...24501-042 ≣E41Memorial J.Capabl...
134Luckis Marcos2270Caro1-042 ≣E47Ch Pan-American
686Byklum Bjornar (NOR)2310Grandelius Nils (...25150-142 ≣E47Ch Norway (team) ...06 Nov 2009
192Hofmann GeorgeSchmid Hans-Peter...18990-142 ≣E41corr.
687Grotnes Nils (NOR)2232Johannessen Leif ...25530-142 ≣E47Ch Norway (team) ...06 Nov 2009
86Polo Gomez Vicent...2212Shocron Ruben (USA)22590-142 ≣A17?
138Omari FatosSafvat Younnus0-142 ≣E41Olympiad
226Kozlovskaya Valen...2281Gaprindashvili No...24250-142 ≣E47Olympiad URS
262Mueller Georg (GER)2054Zimmermann Martin...22381-042 ≣E47corr.
49Kozma Julius (CSR)2380Vesely Jaromir (CZE)19791-042 ≣E21Ch Czechoslovakia
244Brinck-Claussen B...2263Fries-Nielsen Jen...23871-042 ≣E47Ch Denmark
97Gligoric Svetozar...2447Pachman Ludek (GER)22781-042 ≣E47Izt
105O'kelly De Galway...2460Secchi Ernesto1-042 ≣E41Ch World (corr.)
252Boudy Julio (CUB)2188Campos Lopez Mari...23551-042 ≣E41It
98Sokolov Vladimir ...2310Ivkovic Dusan (SRB)22341-042 ≣A46Ch Yugoslavia
680Mareco Sandro (ARG)2503Corrales Fidel (CUB)26020-142E10Ch Continental Am...30 Jul 2009
23Geller Efim P (RUS)2455Kotov Alexander A...25000-142 ≣E41Tournament (candi...
95Evans Larry M (USA)2470Sherwin James T (...22460-142 ≣E41Ch USA
185Visier Segovia Fe...2233Medina-Garcia Ant...22531-042 ≣E41?
747Tovmasian Vardges...2420Soltanici Ruslan ...23970-142 ≣E47Memorial V.Naboko...25 Apr 2012
504Aboud Firas (SYR)2310Aboudi M (JOR)21661-042 ≣E47Ch Asian Cities (...
89Gligoric Svetozar...2447Anderson Frank R ...1-042 ≣E46Olympiad
163Furman Semen (RUS)2550Padevsky Nikola (...23551-042 ≣E41Ch Czechoslovakia...
725Peralta Fernando ...2602Cruz Jonathan (PER)24121-042 ≣E47It (open)03 Jul 2011