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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
146Jenik JHannemann H0-119 ≣E41Europe Tournament...
603Radziewicz Iweta ...2453Turov Maxim (RUS)25460-120 ≣E41It (cat.7)06 Nov 2005
414Parulava Temur (GER)2287Dudek Richard (GER)22450-120 ≣E41Bundesliga (2nd) ...
653Zavadil Michal (CZE)2057Narayanan Srinath...24120-122 ≣E41It (cat.1) \05 Jul 2008
311Maresca FilippoVincenzi R0-122 ≣E41?
231Koski PekkaRantanen Veikko1-023 ≣E41?
423Lyrberg Patrik (SWE)2405Dive Russell John...23151-023 ≣E41It
81Yepez Olavo (ECU)2305Blatny Frantisek ...21120-123 ≣E41Ch World (team) (...
8Vukovic Sava (YUG)Rabar Braslav (YUG)0-123 ≣E41Ch Yugoslavia
7Vukovic Sava (YUG)Rabar Braslav (YUG)0-123 ≣E41Ch Yugoslavia
159Lapienis Donatas ...2282Rusakov Jury (RUS)22470-124 ≣E41Ch Lithuania
266Heiberg ThomasJohannessen Svein...22730-124 ≣E41Memorial Sigurd S...30 Aug 1979
275Mann VPiastowski Kurt (...19780-124 ≣E41Ch DDR (corr.)
251Rodriguez Orestes...2485Olafsson Fridrik ...25300-126 ≣E41It (cat.10)
162Ojanen Kaarle S (...2335Cuartas Carlos (COL)22561-026 ≣E41Olympiad
360RimpinevaKivisto Mikko (SIN)22771-026 ≣E41Ch Finland (corr.)
403Lengyel Ferenc (HUN)2280Kladiva Imre (HUN)20141-026 ≣E41It (open)
337Michenka Jozef (CZE)2346Kazek Krzysztof (...20001-026 ≣E41It
645Danilov Evgeny (RUS)2215Iljiushenok Ilia ...23140-126 ≣E41Ch Russia (junior...
147Krutiansky Anatoly AZhdanov Igor0-127 ≣E41Ch Latvia
329MatthaeiSebald Ralph1-028 ≣E41corr.
6Nikolac Juraj (CRO)2438Matanovic Aleksan...24900-128 ≣E41Ch Yugoslavia
58Barda Yngvar (NOR)2280Keller Dieter Ren...23590-128 ≣E41Olympiad (sf)02 Sep 1956
271Gerusel Mathias (...2395Behle Karl-Willi ...22561-028 ≣E41Bundesliga (2nd) ...
172Kolarov Atanas S ...2415Sapunov Lilko1-028 ≣E41Ch Bulgaria01 Mar 1966
33Uusi Gunnar (EST)2410Levenfish Grigori...1-028 ≣E41Ch Moscow
196Karjarinta TapaniNurmi Toivo0-128 ≣E41?
3Wood GabrielMitchell Graham1-028 ≣E41Ch World (corr.)
50Palmason Gudmundu...2270Einarsson Jon1-029 ≣E41It
54Enevoldsen Jens (...2350Larsen Bent (DEN)24150-129 ≣E41It
673Bublei Pavel (RUS)2189Musaev Rasul (RUS)21100-129 ≣E41Ch Russia (junior...19 Apr 2009
727Gomez Ledo Robert...2452Gensana Berzunces...19971-029 ≣E41It (open)18 Jul 2011
450Lyrberg Patrik (SWE)2415Bilalic Merim (BIH)22810-129 ≣E41Ch World (juniors...
47Furman Semen (RUS)2550Spassky Boris V (...25481-029 ≣E41Ch URS
441Sanchez Cutillas ...2083Reig Albero Ferra...21621-029 ≣E41Ch Aragon (team)
374Ferrer Serrano Ro...2138Dominguez Ofretor...21380-129 ≣E41It \
149Niemela IlmariSafvat Y1-029 ≣E41Olympiad
53Kozma Julius (CSR)2380Lax Hendrich1-029 ≣E41Ch Czechoslovakia...
195FehsingerSchlosser1-029 ≣E41Europe Tournament...
137Tanin SRausch Wilfried (...22451-029 ≣E41corr.
629Kozhuharov Spas (...2463Daurelle Herve (FRA)22631-030 ≣E41It (open)17 Apr 2007
486Galt ArMikhailov Sergey ...23970-130 ≣E41It (open)
463Pihlajamaki JaakkoPennanen Eino0-130 ≣E41?
237Tarjan James E (USA)2490Padevsky Nikola (...23551-030 ≣E41It
293Azmaiparashvili Z...2455Franzen Jozef (SVK)23021-030 ≣E41Cup Tatran
462Usachyi Vladimir ...2245Baklan Vladimir (...25700-130 ≣E41It (open)
500Bernat Marcin (POL)2227Rybak Tomasz (POL)21631-030 ≣E41Ch Poland (team) ...
466Zilberman Yaacov ...2560Tsesarsky Ilya (ISR)24451-030 ≣E41Tournament
92Ojanen Kaarle S (...2335Euwe Max (NED)0-131 ≣E41Olympiad
664Marinone Lucio (ITA)2008Provera Emanuele ...21380-131 ≣E41It (open)28 Dec 2008
145Morgulov Alexsand...2335Sardarov Edward (...22060-131 ≣E41Ch Azerbaijan
456Franic Milan (CRO)2390Zelic Zdravko (CRO)23901-032 ≣E41Cup Croatia
84Panno Oscar (ARG)2438Garcia Vera Romeo1-032 ≣E41Ch Argentina
349SchepersPiekorz Roland19300-132 ≣E41Ch DDR (corr.)
104Donner Jan-Hein (...2430Clarke Peter H (ENG)23001-032 ≣E41Match \
120Thorbergsson Frey...2340Humerez C0-132 ≣E41Olympiad
28Gligoric Svetozar...2447Janosevic Dragolj...23301-032 ≣E41It
532Degtiarev Evgeny ...2180Faizrakhmanov Gen...21900-133 ≣E41Ch Russia (junior...
82Dzieciolowski AdamWiniwarter Felix ...21760-133 ≣E41Memorial Przepiorka
362Garralda AGarcia Trobat Fra...22910-133E41It (open)
26Bronstein David I...2432Horberg Bengt-Eric1-033 ≣E41Olympiad
202Steiner Josef (AUT)2116Yudovich Mikhail ...1-033 ≣E41corr.
567Zilberstein Dmitr...2379Del Pilar Reynald...23061-033 ≣E41It \
39Jorgensen Vagn RauheSpassky Boris V (...25480-133 ≣E41Ch World (juniors...
494Kay JBStracy D (NZL)1-033 ≣E41Ch North Island (b)
87Donner Jan-Hein (...2430Larsen Bent (DEN)24150-133 ≣E41Match
164Szabo Laszlo (HUN)1903Matanovic Aleksan...24901-033 ≣E41Match \
254Podgaets Mikhail ...2465Donchenko Anatoly...23851-033 ≣E41?
48Vladimirov Boris ...2340Lisitsyn Georgy (...0-133 ≣E41Ch URS (1/2 final)
30Szabo Laszlo (HUN)1903Pogats Jozsef (HUN)22301-034 ≣E41Ch Hungary
676Miranda Yerisbel ...2194Garcia Pantoja Ro...23760-134 ≣E41Memorial J.Capabl...11 Jun 2009
144Reshevsky Samuel ...2430Porath Yosef (ISR)23401-034 ≣E41Izt
330Vogel Robert (GER)2256Waldow Frank1-034 ≣E41Bundesliga 1987/88
312Hoi Carsten (DEN)2420Kormanyos Zoltan ...23141-034 ≣E41It (open)
5Martin Pedro (ARG)2021Souza Mendes Joao1-034 ≣E41Zt
12Moisieev Oleg L (...2385Byvshev Vasily Mi...1-034 ≣E41Ch URS
299Gneusz WEichenberg1-034 ≣E41corr.
156Harjunpaa VeikkoTschernauskas0-134 ≣E41Cup Baltic (corr.)
9Germek MilanO'kelly De Galway...24600-134 ≣E41It
389Bazan GerardoKanefsck Gustavo ...23731-034 ≣E41It (open)
152Garcia Horacio2200Polo Gomez Vicent...22120-134 ≣E41Ch Buenos Aires
119Borja MEuwe Max (NED)0-134 ≣E41Olympiad
40Schweber Samuel (...2348Spassky Boris V (...25480-135 ≣E41Ch World (juniors...
478Nor Igor (ISR)2280Seidl Juergen (GER)21701-035 ≣E41Memorial Karl Wag...
576Verzhansky Alexan...2327Flyagin Dmitriy (...1-035 ≣E41Ch Russia (junior...
17Najdorf Miguel (POL)2445Reshevsky Samuel ...24300-135 ≣E41Match
376Hager Franz (AUT)2224Felsberger Alfred...23611-035 ≣E41Staatsliga 1991/92
703Pesqueira Jose (ARU)1982Dzhumabayev Rinat...25470-135 ≣E41Olympiad21 Sep 2010
655Perez Inclan Jorg...1626Lorinczi Retek Pe...16861-035 ≣E41It (open)
559Golovchenko Gleb ...2260Vlasov Egor (RUS)22510-136 ≣E41Ch City (juniors)...
728Salem A R Saleh (...2489Ashwath R (IND)22491-036 ≣E41Ch World (juniors...07 Aug 2011
184Donner Jan-Hein (...2430Rovira Mas Jorge ...22901-036 ≣E41Olympiad
258Portisch Ferenc (...2475Rigo Janos (HUN)23851-036 ≣E41Ch Hungary
259Yrjonen MarkkuMolarius Reijo (FIN)1-036 ≣E41?
355Foldi Istvan (HUN)2285Schmittdiel Eckha...24550-136 ≣E41Memorial Elekes
290Savolainen MattiHaapasalo Risto1-037 ≣E41?
14Tolush Alexander ...Troianescu Octav ...23301-037 ≣E41It
115Donner Jan-Hein (...2430Matanovic Aleksan...24900-137 ≣E41It
428Storkebaum Karl H...Cors Heinz-Friedr...19350-137 ≣E41Memorial Weber (o...
113Minev Nikolay N (...2370Blatny Frantisek ...21120-137 ≣E41It