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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
213Bergdahl AssarNordstrom Felix (...21810-140 ≣E41corr.
475Doyle JimGrant Alan (SCO)21860-134 ≣E47Ch West Scotland
658Kovalenko Igor (UKR)2453Kurukin Dmitry (RUS)21861-036 ≣E47It (open)12 Aug 2008
738Netusil Miroslav ...2318Sura Jaroslav (CZE)21871-033 ≣E47Ch Czech Republic...27 Nov 2011
667Yurkov Alexey (UKR)2163Mazurchak Bogdan ...21870-139 ≣E47Ch Ukraine (junio...14 Feb 2009
71Taimanov Mark E (...2386Nedeljkovic Sreck...21881-034 ≣A17Match \
72Taimanov Mark E (...2386Nedeljkovic Sreck...21881-034 ≣A17Match \
321Pilgenroether MHeigl Rudolf (GER)21901-014 ≣E47corr.
532Degtiarev Evgeny ...2180Faizrakhmanov Gen...21900-133 ≣E41Ch Russia (junior...
697Kapnisis Spyridon...2511Pavlidou Ekaterin...21911-041 ≣E47Cup Artemis (open)14 Jul 2010
493Buhmann Rainer (GER)2386Schreiner Richard...21921-049 ≣E47Bundesliga (2nd) ...
368Jolowicz Matias D...2243Wronn Bernd (GER)21920-124 ≣E47Regionalliga Nort...
477Juhnke Karl (GER)2290Wronn Bernd (GER)21921-048 ≣E47Oberliga Northwes...
132Trmal Jaroslav (CZE)2184Fabian Jaroslav (...21921-038 ≣E47Ch Czechoslovakia
133Zilber Israel (USA)2400Roizman Michael (...21941-048 ≣E41Ch URS (team)
546Davydenko Andrey ...2080Novoselsky Oleg (...21950-140 ≣E46Memorial Y.Sakhar...
677Nikolov Sasho (BUL)2416Videnova Iva (BUL)21970-148 ≣E47It (open)23 Jun 2009
1Benko Pal C (USA)2408Szabo Laszlo (GER)22001-046 ≣E47
357MrazCallens Alex22001-045 ≣E47Ch Europe (corr.)
381Siciarz JLewandowski K22001-035 ≣E47Ch Poland (corr.)
57Bisguier Arthur B...2237Turner Abe22001-046 ≣E41Memorial Rosenwald
437Ruzzier Dario (ITA)1981Ceresoli Luigi (ITA)22020-145 ≣E47It (open)
571Petkevich Jusefs ...2436Gerenski Hristo (...22041-050 ≣A04Ch Europe (seniors)
141Lengyel Levente (...2293Somogyi Istvan (HUN)22051-041 ≣E47Ch Hungary
145Morgulov Alexsand...2335Sardarov Edward (...22060-131 ≣E41Ch Azerbaijan
180ZverevicMarkovic Igor (CRO)22070-140 ≣E41Tournament (corr.)
595Pacheco Daniel (ARG)2297Ferrufino Boris (...22111-041 ≣E21It (cat.2)12 Jun 2005
323CartensLaarhoven Thijs (...22110-143 ≣E47corr.
385Brancaleoni Mauri...2275Delanoy Arnaud (FRA)22110-122 ≣D31It (open)
304Nieland CLaarhoven Thijs (...22111-039 ≣E47corr.
536Johannessen Leif ...2527Moussa Alaa-Eddin...22121-045 ≣E47Olympiad
152Garcia Horacio2200Polo Gomez Vicent...22120-134 ≣E41Ch Buenos Aires
153Emma Jaime (ARG)2395Polo Gomez Vicent...22120-144 ≣E41Ch Buenos Aires (...
756Maiorov Nikita (BLR)2574Darmarakis Mihail...22140-140 ≣E47It (open)08 Jul 2012
488Nor Igor (ISR)2280Jagodzinski Andre...22150-141 ≣E47It (cat.2)
518Salo Heikki (FIN)2242Nyysti Sampsa (FIN)22150-148 ≣E47Ch Finland (team)...
499Kodentsov Grisja ...2275Werle Jan (NED)22161-040 ≣E20Ch Netherlands (j...
602Dias Paulo (POR)2306Blalock Rex (USA)22181-036 ≣E10It (open)03 Nov 2005
730Peralta Fernando ...2601Pavlidou Ekaterin...22201-039 ≣E47It (open)19 Aug 2011
461Mancini Mario (FRA)2290Gosset Arnaud (FRA)22201-028 ≣E47It (open)
501Babula Vlastimil ...2567Rigo Zsolt (SVK)22221-027 ≣E47Ch Slovakia
453Wabschke AlfredHenrich Thomas (GER)22221-026 ≣E47VL1 1996/97
479Eberhardt Olaf (GER)2099Wohlfart Paulus D...22220-140 ≣E41Oberliga 1997/98
733Urkedal Frode (NOR)2447Tari Aryan (NOR)22241-029 ≣E47It (open)02 Oct 2011
639Enchev Evgeni (BUL)1988Nikolova Adriana ...22250-133 ≣E40Ch Bulgaria (stud...10 Nov 2007
651Maurer Fritz (SUI)2080Grabher Heinz (AUT)22260-130 ≣E47It (open)26 Apr 2008
591Drozdowski Kacper...1812Paprocki Jaroslaw...22270-148 ≣E21Tournament (regio...04 Apr 2005
445Frolik Martin (CZE)2255Kubala Martin (CZE)22301-042 ≣A40Czech League 1995...
30Szabo Laszlo (HUN)1903Pogats Jozsef (HUN)22301-034 ≣E41Ch Hungary
420Atalik Suat (BIH)2535Karason Askell O ...22301-036 ≣E47It (open)
158Farago Ivan (HUN)2488Pogats Jozsef (HUN)22301-028 ≣E47Ch Hungary
305Spraggett Kevin (...2540Hartman Brian (CAN)22301-044 ≣A13Ch Canada
363Fiorito Fabian (ARG)2438Fernandez Murga R...22301-048 ≣E47Ch Argentina
222Ball Stephen (CAN)2225Dobrich Walter (CAN)22300-128 ≣E47Ch Canada
63Soos Bela (ROM)2281Ingerslev Aage (DEN)22301-039 ≣E41Olympiad16 Sep 1956
636Koelbl Wolfgang (...1912Schulte Torsten (...22310-130 ≣E47It (open)02 Aug 2007
540Salo Heikki (FIN)2279Sorsa Nuutti (FIN)22311-040 ≣E47Ch Finland (team)...
675Li Panru (CHN)2132Wang Xiaohui (CHN)22310-149 ≣E47Ch Asia (w)23 May 2009
443Sasata Robert (CAN)2279Ferguson Bobby (USA)22320-134 ≣E21It (open)
631Hoang Thi Bao Tra...2265Andriasian Siranu...22341-044 ≣E21Ch World (team) (w)21 May 2007
306Ostenstad Berge (...2315O'Cinneide Mel (IRL)22341-028 ≣E46Ch World (juniors...03 Aug 1984
98Sokolov Vladimir ...2310Ivkovic Dusan (SRB)22341-042 ≣A46Ch Yugoslavia
430Mertanen Janne (FIN)2369Nokso-Koivisto An...22350-141 ≣E47Ch Finland (team)...
386Israel Jens (GER)2193Fritze Bernd (GER)22350-124 ≣A40Oberliga Northwes...
35Szabo Laszlo (HUN)1903Sliwa Bogdan (POL)22351-028 ≣E47Zt
143Beggi Pierluigi (...2122Trincardi Tullio ...22351-032 ≣A17It
255Webb Simon (ENG)2420Boehlig Heinz Dr ...22371-049 ≣E47It \04 Jun 1978
262Mueller Georg (GER)2054Zimmermann Martin...22381-042 ≣E47corr.
495Kovacs Istvan (HUN)2236Somogyi Istvan (HUN)22381-050 ≣E21Ch Hungary (team)...
353Macskasy Elod (CAN)Joyner Lionel (CAN)22401-044 ≣A40It
700Zilka Stepan (CZE)2479Bugalski Michal (...22401-033 ≣E47It (open)08 Aug 2010
380Popov Sinisa S (SRB)2443Stanimirovic Alek...22401-031 ≣E40Ch Yugoslavia (team)
303Kahn Manfred (GER)2139Staller Peter (GER)22441-043 ≣A40It
137Tanin SRausch Wilfried (...22451-029 ≣E41corr.
414Parulava Temur (GER)2287Dudek Richard (GER)22450-120 ≣E41Bundesliga (2nd) ...
95Evans Larry M (USA)2470Sherwin James T (...22460-142 ≣E41Ch USA
159Lapienis Donatas ...2282Rusakov Jury (RUS)22470-124 ≣E41Ch Lithuania
728Salem A R Saleh (...2489Ashwath R (IND)22491-036 ≣E41Ch World (juniors...07 Aug 2011
74Taimanov Mark E (...2386Antoshin Vladimir...22501-041 ≣E41Ch URS
45Furman Semen (RUS)2550Antoshin Vladimir...22500-146 ≣E41Ch URS
42Negyesy GyorgyKluger Gyula (HUN)22501-045 ≣A06Ch Hungary
421Almer JohanWelin Mats (SWE)22511-027 ≣A17It (open) (b)
561Giuriato Sergio (...2020Wronn Bernd (GER)22510-120 ≣E40It (open)
559Golovchenko Gleb ...2260Vlasov Egor (RUS)22510-136 ≣E41Ch City (juniors)...
583Zakharchenko Arno...2273Borsuk Konstantin...22521-039 ≣E47Ch Kiev21 Jan 2005
185Visier Segovia Fe...2233Medina-Garcia Ant...22531-042 ≣E41?
178Portisch Lajos (HUN)2523Sarapu Ortvin (NZL)22551-036 ≣E47Izt
464Michenka Jozef (CZE)2330Machycek Lubomir ...22550-140 ≣E47Ch MSS
271Gerusel Mathias (...2395Behle Karl-Willi ...22561-028 ≣E41Bundesliga (2nd) ...
162Ojanen Kaarle S (...2335Cuartas Carlos (COL)22561-026 ≣E41Olympiad
746Salinas Herrera P...2366Valiente Cristoba...22571-035 ≣E47It (cat.3)02 Apr 2012
86Polo Gomez Vicent...2212Shocron Ruben (USA)22590-142 ≣A17?
85Emma Jaime (ARG)2395Shocron Ruben (USA)22591-037 ≣E47?
112Souza Mendes JoaoShocron Ruben (USA)22591-046 ≣E41?
656Bagapsh Astamur (...Sanakoev Grigory ...22590-120 ≣E21It (open) (a)03 Aug 2008
331Donaldson John W ...2390Dolgitser Konstan...22611-041 ≣E47It (open)
634Kashlinskaya Alin...2263Ogleznev Alexandr...22621-041 ≣E47It \22 Jul 2007
629Kozhuharov Spas (...2463Daurelle Herve (FRA)22631-030 ≣E41It (open)17 Apr 2007
68Golz Werner (GER)2410Rellstab Ludwig S...22650-124 ≣E40It
431Glianietz Alexand...2398Murzin Lenar (RUS)22651-029 ≣E47Ch Russia (1/2 fi...