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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
22Averbakh Yuri L (...2445Euwe Max (NED)1-045 ≣E41Tournament (candi...
293Azmaiparashvili Z...2455Franzen Jozef (SVK)23021-030 ≣E41Cup Tatran
199Baart JoanWeyerstrass Ronal...0-148E41Match
161Bachtiar Arovah (...2285Donner Jan-Hein (...24300-144 ≣E41It \
496Balogh JBoros Laszlo (HUN)19190-139 ≣E41Ch Hungary (team)...
58Barda Yngvar (NOR)2280Keller Dieter Ren...23590-128 ≣E41Olympiad (sf)02 Sep 1956
389Bazan GerardoKanefsck Gustavo ...23731-034 ≣E41It (open)
213Bergdahl AssarNordstrom Felix (...21810-140 ≣E41corr.
500Bernat Marcin (POL)2227Rybak Tomasz (POL)21631-030 ≣E41Ch Poland (team) ...
57Bisguier Arthur B...2237Turner Abe22001-046 ≣E41Memorial Rosenwald
573Biswas KarlCarlucci Paul A0-150 ≣E41It (open) \23 Oct 2003
119Borja MEuwe Max (NED)0-134 ≣E41Olympiad
252Boudy Julio (CUB)2188Campos Lopez Mari...23551-042 ≣E41It
26Bronstein David I...2432Horberg Bengt-Eric1-033 ≣E41Olympiad
186Bronstein Luis (ARG)2349Schweber Samuel (...23480-138 ≣E41It
673Bublei Pavel (RUS)2189Musaev Rasul (RUS)21100-129 ≣E41Ch Russia (junior...19 Apr 2009
470Burlov Vassili (RUS)2345Nikolenko Oleg (RUS)24900-143 ≣E41Ch Moscow
200Cardoso Carlos Al...2207Sharif Mehrshad (...23300-141 ≣E41Olympiad
181Cherepkov Alexand...2395Tseshkovsky Vital...24720-141 ≣E41Ch URS
59Ciocaltea Viktor ...2420Safvat Yousof (IRN)0-146 ≣E41Olympiad (sf)06 Sep 1956
27Cuellar Gacharna ...2280Vesterinen J1-043 ≣E41Olympiad
645Danilov Evgeny (RUS)2215Iljiushenok Ilia ...23140-126 ≣E41Ch Russia (junior...
532Degtiarev Evgeny ...2180Faizrakhmanov Gen...21900-133 ≣E41Ch Russia (junior...
176Diez Del Corral J...2415O'kelly De Galway...24600-144 ≣E41It
76Dittmann SieghardOlafsson Fridrik ...24340-140 ≣E41Olympiad (student...
341Dive Russell John...2339Martin Benjamin (...23751-050 ≣E41Ch New Zealand
104Donner Jan-Hein (...2430Clarke Peter H (ENG)23001-032 ≣E41Match \
87Donner Jan-Hein (...2430Larsen Bent (DEN)24150-133 ≣E41Match
184Donner Jan-Hein (...2430Rovira Mas Jorge ...22901-036 ≣E41Olympiad
115Donner Jan-Hein (...2430Matanovic Aleksan...24900-137 ≣E41It
82Dzieciolowski AdamWiniwarter Felix ...21760-133 ≣E41Memorial Przepiorka
479Eberhardt Olaf (GER)2099Wohlfart Paulus D...22220-140 ≣E41Oberliga 1997/98
502Elsness Frode (NOR)2395Khenkin Igor (GER)26330-150 ≣E41Cup Rilton
153Emma Jaime (ARG)2395Polo Gomez Vicent...22120-144 ≣E41Ch Buenos Aires (...
54Enevoldsen Jens (...2350Larsen Bent (DEN)24150-129 ≣E41It
95Evans Larry M (USA)2470Sherwin James T (...22460-142 ≣E41Ch USA
195FehsingerSchlosser1-029 ≣E41Europe Tournament...
374Ferrer Serrano Ro...2138Dominguez Ofretor...21380-129 ≣E41It \
355Foldi Istvan (HUN)2285Schmittdiel Eckha...24550-136 ≣E41Memorial Elekes
456Franic Milan (CRO)2390Zelic Zdravko (CRO)23901-032 ≣E41Cup Croatia
326Frieser Klaus (GER)2151Prizant Michael (...21360-138 ≣E41Europe Tournament...
46Furman Semen (RUS)2550Kotov Alexander A...25001-037 ≣E41Ch URS
45Furman Semen (RUS)2550Antoshin Vladimir...22500-146 ≣E41Ch URS
163Furman Semen (RUS)2550Padevsky Nikola (...23551-042 ≣E41Ch Czechoslovakia...
47Furman Semen (RUS)2550Spassky Boris V (...25481-029 ≣E41Ch URS
123Galonska WIwaschin A1-046 ≣E41corr.
486Galt ArMikhailov Sergey ...23970-130 ≣E41It (open)
152Garcia Horacio2200Polo Gomez Vicent...22120-134 ≣E41Ch Buenos Aires
362Garralda AGarcia Trobat Fra...22910-133E41It (open)
417Gelfand Boris (ISR)2680Korchnoi Viktor (...26150-137 ≣E41It (cat.16)
107Geller Efim P (RUS)2455Padevsky Nikola (...23551-044 ≣E41It
23Geller Efim P (RUS)2455Kotov Alexander A...25000-142 ≣E41Tournament (candi...
9Germek MilanO'kelly De Galway...24600-134 ≣E41It
271Gerusel Mathias (...2395Behle Karl-Willi ...22561-028 ≣E41Bundesliga (2nd) ...
589Glavas Dragan (CRO)2333Krkljes Slaven (CRO)21671-039 ≣E41Ch Croatia (team)...20 Mar 2005
67Gligoric Svetozar...2447Stenborg Ake (SWE)22800-148 ≣E41Zt
28Gligoric Svetozar...2447Janosevic Dragolj...23301-032 ≣E41It
2Gligoric Svetozar...2447Rossolimo Nichola...24501-041 ≣E41It
299Gneusz WEichenberg1-034 ≣E41corr.
559Golovchenko Gleb ...2260Vlasov Egor (RUS)22510-136 ≣E41Ch City (juniors)...
727Gomez Ledo Robert...2452Gensana Berzunces...19971-029 ≣E41It (open)18 Jul 2011
554Gutov Andrey (RUS)2366Kolomensky Vladim...23151-047 ≣E41Ch Russia (1/2 fi...
376Hager Franz (AUT)2224Felsberger Alfred...23611-035 ≣E41Staatsliga 1991/92
156Harjunpaa VeikkoTschernauskas0-134 ≣E41Cup Baltic (corr.)
266Heiberg ThomasJohannessen Svein...22730-124 ≣E41Memorial Sigurd S...30 Aug 1979
65Herink Miroslav (...2071Blatny Frantisek ...21121-038E41It
140Herren WalterBernhardt Rolf (GER)22880-140 ≣E41It
291Hesselbarth Karlh...1808Piastowski Kurt (...19781-039 ≣E41Ch DDR (corr.)
192Hofmann GeorgeSchmid Hans-Peter...18990-142 ≣E41corr.
312Hoi Carsten (DEN)2420Kormanyos Zoltan ...23141-034 ≣E41It (open)
43Idigoras GregorioNajdorf Miguel (POL)24450-139 ≣E41Ch Argentina
16Idigoras GregorioMarini Luis0-143 ≣E41Ch Argentina
44Idigoras GregorioSanguinetti J0-145 ≣E41Ch Argentina
632Iotov Valentin (BUL)2509Kuzubov Yuriy (UKR)25821-045 ≣E41It \07 Jun 2007
197Ivanchenko Sergey...2054Rovner Dmitry (RUS)0-138 ≣E41?
243Ivanov Igor V (CAN)2424Popov Nikolay (MDA)24100-140 ≣E41Tournament
110Ivkov Borislav (SRB)2416Wexler Bernardo (...1-040 ≣E41?
760Jacso Adam (HUN)2224Kozma Gabor19591-040 ≣E41It (open)19 Aug 2012
146Jenik JHannemann H0-119 ≣E41Europe Tournament...
39Jorgensen Vagn RauheSpassky Boris V (...25480-133 ≣E41Ch World (juniors...
467Karayannis Athana...2245Nikolaidis Ioanni...25200-143 ≣E41It (open)
196Karjarinta TapaniNurmi Toivo0-128 ≣E41?
690Kashlinskaya Alin...2358Girya Olga (RUS)24141-050 ≣E41Ch Russia (junior...18 Apr 2010
297Kausek KZlebcik L1-037 ≣E41Ch Czechoslovakia...
494Kay JBStracy D (NZL)1-033 ≣E41Ch North Island (b)
263Keene Raymond D (...2455Romanishin Oleg M...25600-140 ≣E41?
248KeneszDuenhaupt HW (GER)1-040 ≣E41Ch Europe (team) ...
471Khasin Abram (RUS)2420Leonidov Vitaly (...23650-142 ≣E41It (seniors)
15Kluger Gyula (HUN)2250Florian Tibor (HUN)1-038 ≣E41Ch Hungary
286Knaak Rainer (GER)2505Tischbierek Raj (...24541-042 ≣E41It
216Knaak Rainer (GER)2515Garcia Gonzales G...24501-042 ≣E41Memorial J.Capabl...
172Kolarov Atanas S ...2415Sapunov Lilko1-028 ≣E41Ch Bulgaria01 Mar 1966
231Koski PekkaRantanen Veikko1-023 ≣E41?
472Kostin Sergei (RUS)2290Tunik Gennady (RUS)24500-147 ≣E41Cup Russia (open)
13Kotov Alexander A...2500Matanovic Aleksan...24901-041 ≣E41Izt
672Kozakov Mikhail (...2437Ganin Maksim (UKR)24271-040 ≣E41It \17 Apr 2009
629Kozhuharov Spas (...2463Daurelle Herve (FRA)22631-030 ≣E41It (open)17 Apr 2007
53Kozma Julius (CSR)2380Lax Hendrich1-029 ≣E41Ch Czechoslovakia...
147Krutiansky Anatoly AZhdanov Igor0-127 ≣E41Ch Latvia
696Lahiri Atanu (IND)2341Savic Miodrag R (...25030-143 ≣E41It (open)12 Jul 2010