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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
571Petkevich Jusefs ...2436Gerenski Hristo (...22041-050 ≣A04Ch Europe (seniors)
408Alipayo Rodulfo (...2380Hergott Deen (CAN)24300-127 ≣A05It (open) \
608Zhao Zong-Yuan (AUS)2455Van Riemsdijk Her...23811-022 ≣A05It (open)22 Jan 2006
214Loginov Valery A ...2486Ivanov Alexander ...20330-127 ≣A05Tournament (juniors)
289Panno Oscar (ARG)2515Hase Juan C (ARG)24151-029 ≣A05It (a)
476Speelman Jonathan...2600Ellers Holger (GER)24251-040 ≣A05Bundesliga 1998/99
543Muse Drazen (CRO)2442Ellers Holger (GER)24251-034 ≣A05Bundesliga 2002/03
391Bjerke Richard (NOR)2285Hultin Johan (SWE)23071-025 ≣A06It (b)
684Quiroga Facundo (...2329Van Riemsdijk Her...23800-138 ≣A06Ch Paulista (final)03 Oct 2009
42Negyesy GyorgyKluger Gyula (HUN)22501-045 ≣A06Ch Hungary
139Noi (LUX)Safvat J (IRI)0-120 ≣A06Olympiad
649Mareco Sandro (ARG)2481Mahia Gustavo (ARG)24170-141 ≣A09Ch Argentina (1/2...14 Apr 2008
483Kveinys Aloyzas (...2545Nikcevic Nebojsa ...24801-035 ≣A13It (open)
305Spraggett Kevin (...2540Hartman Brian (CAN)22301-044 ≣A13Ch Canada
91Johannsson Ingi R...2410Safvat Y1-038 ≣A15Olympiad
555Johannessen Leif ...2527Moen Andreas (NOR)22650-134 ≣A15It (cat.6)
542Johannessen Leif ...2527Jenni Florian (SUI)25161-029 ≣A15Bundesliga 2002/03
336Leserer HKaiser0-124 ≣A15Ch BRD (corr.)
264Clayton JAWilson PA1-048 ≣A15corr.
100Bobotsov Milko G ...2405Kadrev Zdravko1-048A15Ch Bulgaria
109Geller Efim P (RUS)2455Levin M1-044 ≣A15Ch Ukraine
121Ujtelsky Maximili...2295Kramer Haije J (NED)23301-040 ≣A17Olympiad
61Taimanov Mark Ye....2387Darga Klaus Vikto...24531-031 ≣A17Olympiad12 Sep 1956
78Panno Oscar (ARG)2438Rossetto Hector (...22851-035 ≣A17Zt
36Simagin Vladimir ...Gipslis Aivars (LAT)24290-143 ≣A17Ch URS (team)
421Almer JohanWelin Mats (SWE)22511-027 ≣A17It (open) (b)
284Olafsson Helgi (ISL)2270Zaltsman Vitaly F...24451-036 ≣A17It (open)
72Taimanov Mark E (...2386Nedeljkovic Sreck...21881-034 ≣A17Match \
90Johannsson Ingi R...2410Anderson Frank R ...0-127 ≣A17Olympiad
60Uhlmann Wolfgang ...2434Olafsson Fridrik ...24340-130 ≣A17Olympiad10 Sep 1956
56Wexler FranciscoNajdorf Miguel (POL)24450-143 ≣A17It
628Lorens Ristovic L...2035Jovanovic Zoran (...25490-143 ≣A17Cup Belgrade 2007...11 Apr 2007
234Just Joachim (GER)2047Potthammel Joerg ...21300-140 ≣A17Ch DDR (corr.)
52Taimanov Mark E (...2386Darga Klaus (GER)24531-027 ≣A17It
292BarbagalloLyne Colin18700-131 ≣A17corr.
409Rodriguez Lopez R...2313Martin Garcia Jua...21420-137 ≣A17It (open)
143Beggi Pierluigi (...2122Trincardi Tullio ...22351-032 ≣A17It
86Polo Gomez Vicent...2212Shocron Ruben (USA)22590-142 ≣A17?
71Taimanov Mark E (...2386Nedeljkovic Sreck...21881-034 ≣A17Match \
551Khurtsidze Nino (...2433Balashov Yuri S (...25211-033 ≣A40It (open) \
541Babula Vlastimil ...2581Luther Thomas (GER)25751-033 ≣A40Bundesliga 2001/02
549Gutierrez Lopez C...2172Jimenez Ruiz Jose...19800-134 ≣A40Ch Malaga (qual)
397Lukacs Peter (HUN)2485Landenbergue Clau...23971-043 ≣A40It \
469Computer \Luther Thomas (GER)25250-146 ≣A40It (cat.7)
474Huss Rolf (GER)2163Schild Christoph ...22880-132 ≣A40It (open)
445Frolik Martin (CZE)2255Kubala Martin (CZE)22301-042 ≣A40Czech League 1995...
468Pieniazek Artur (...2415Luther Thomas (GER)25250-136 ≣A40It (open) (a)
404Thibodeau ChrisRyan R11-010 ≣A40It \
592Radojevic Sasa (SRB)2104Jovic Aleksandar ...24090-125 ≣A40Cup Belgrade 2005...05 Apr 2005
282Kell KlausSelke Horst1-024 ≣A40corr.
309Goehring Karl-Hei...2335Budde Vladimir (GER)22911-043 ≣A40Bundesliga 1984/85
386Israel Jens (GER)2193Fritze Bernd (GER)22350-124 ≣A40Oberliga Northwes...
353Macskasy Elod (CAN)Joyner Lionel (CAN)22401-044 ≣A40It
303Kahn Manfred (GER)2139Staller Peter (GER)22441-043 ≣A40It
663Salem A R Saleh (...2476Amin Bassem (EGY)25601-037 ≣A40Ch Arabic Countries22 Dec 2008
699Lund Esben (DEN)2401Sammalvuo Tapani ...24651-040 ≣A40Memorial Heini Ol...24 Jul 2010
194Wildt VolkerLederer G0-120 ≣A40corr.
142Lampela OlaviEkblom PE (FIN)1-035 ≣A40?
19Donner Jan-Hein (...2430Kupper Josef (SUI)23741-035 ≣A40It
280Glasewald Stefan ...2079Selke Horst1-047 ≣A40corr.
581Ruetten Ingmar (GER)2047Hilmer Frank (GER)21790-126 ≣A40It (open)01 Oct 2004
622Ackermann Peter1935Malzacher Wolfgang18080-126 ≣A46Verbandsliga Bade...26 Nov 2006
98Sokolov Vladimir ...2310Ivkovic Dusan (SRB)22341-042 ≣A46Ch Yugoslavia
364Manor Ilan (ISR)2476Horvath Jozsef M ...21040-139 ≣A46It \
748Schwalfenberg Joe...Maehrlein Christoph1-049 ≣A46Verbandsliga Bade...29 Apr 2012
558Martinez Fernande...2001Lalic Bogdan (ENG)25470-138 ≣D02It (open)
613Melnichuk Mikhail...2227Kovalenko Igor (UKR)23250-136 ≣D02Ch Ukraine (junio...12 Mar 2006
753Ivana Maria Furtado2065Jargalmaa Sarantuya17731-034 ≣D02Ch Asia (juniors)...27 Jun 2012
593Mercier Pierre (FRA)1770Delort Frederic (...21700-122 ≣D31It (open)18 Apr 2005
424Weindl Alfred (GER)2350Joachim Sven (GER)23801-043 ≣D31It (open)
385Brancaleoni Mauri...2275Delanoy Arnaud (FRA)22110-122 ≣D31It (open)
702Zhukova Natalia (...2499Koneru Humpy (IND)25931-047 ≣D31Ch World (blitz) ...18 Sep 2010
691Gaprindashvili Va...2404Arutinian David (...25780-145 ≣D31Cup Municipality20 May 2010
666Piorun Kacper (POL)2457Bartel Mateusz (POL)26190-134 ≣D31Ch Poland05 Feb 2009
650Medina Sanchez Gi...1711Ramirez Alvarez R...20360-134 ≣D31It (open)26 Apr 2008
745Monticelli Romain1820De Gueldre Philip...21270-127 ≣E00Tournament (open)30 Mar 2012
552Shipov Sergei (RUS)2604Bagirov Rufat (AZE)24940-136 ≣E10It (open) \
458Kock Hans-Uwe (LIE)2235Kiesslich W1-029E10It (open)
484Garcia Palermo Ca...2470Van Riemsdijk Her...24050-148 ≣E10It (cat.6)
18Panno Oscar (ARG)2438Ivkov Borislav (SRB)24161-024 ≣E10Ch World (juniors)
732Rasmussen Henning...2172Byrne Ray (IRL)20540-143 ≣E10Cup European Club26 Sep 2011
682Rees Ioan (WLS)2339Pap Gyula (HUN)25030-146 ≣E10It (cat.8)03 Aug 2009
442Karp Serge (LUX)2095Pytel Krzysztof (...24250-122 ≣E10It (open)
606Van der Werf RVermeulen F0-129 ≣E10It (open)
680Mareco Sandro (ARG)2503Corrales Fidel (CUB)26020-142E10Ch Continental Am...30 Jul 2009
201Littleton Michael...2275Sharif Mehrshad (...23301-012 ≣E10Olympiad
88Angos AlexanderSafvat Y0-121 ≣E10Olympiad
602Dias Paulo (POR)2306Blalock Rex (USA)22181-036 ≣E10It (open)03 Nov 2005
652Fistek Dariusz (POL)2265Sopur Lech (POL)24250-135 ≣E10It (open)28 Apr 2008
520Labat Antoine (FRA)2024Dourerassou Jonat...21030-142 ≣E11Ch France (team) ...
758Zwirs Nico (NED)2173Leenhouts Koen (NED)23840-134 ≣E11It (open)07 Aug 2012
447Van Den Bergh Jan...2068Bjarnason Saevar ...22850-135 ≣E11It (open)
713Schnider Gert (AUT)2358Schwenk Andreas (...21301-035 ≣E11It (open)17 Feb 2011
499Kodentsov Grisja ...2275Werle Jan (NED)22161-040 ≣E20Ch Netherlands (j...
572Melkumjanc NicolajDeuber Roman (SUI)20960-121 ≣E20Ch Switzerland
624Pushkov Nikolai (...2513Kornyukov Alexey ...24161-037 ≣E21Memorial G.I.Ivan...03 Jan 2007
623D'apa Matteo (ITA)2026Cardani Roberto (...19031-050 ≣E21Memorial Crespi (...08 Dec 2006
495Kovacs Istvan (HUN)2236Somogyi Istvan (HUN)22381-050 ≣E21Ch Hungary (team)...
631Hoang Thi Bao Tra...2265Andriasian Siranu...22341-044 ≣E21Ch World (team) (w)21 May 2007
455Bjornsson Bjorn F...2230Addison James1-029 ≣E21It \