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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
496Balogh JBoros Laszlo (HUN)19190-139 ≣E41Ch Hungary (team)...
57Bisguier Arthur B...2237Turner Abe22001-046 ≣E41Memorial Rosenwald
13Kotov Alexander A...2500Matanovic Aleksan...24901-041 ≣E41Izt
192Hofmann GeorgeSchmid Hans-Peter...18990-142 ≣E41corr.
40Schweber Samuel (...2348Spassky Boris V (...25480-135 ≣E41Ch World (juniors...
472Kostin Sergei (RUS)2290Tunik Gennady (RUS)24500-147 ≣E41Cup Russia (open)
489Potapov Alexander...2241Filippov Valerij ...25951-045 ≣E41Cup Russia
67Gligoric Svetozar...2447Stenborg Ake (SWE)22800-148 ≣E41Zt
9Germek MilanO'kelly De Galway...24600-134 ≣E41It
690Kashlinskaya Alin...2358Girya Olga (RUS)24141-050 ≣E41Ch Russia (junior...18 Apr 2010
341Dive Russell John...2339Martin Benjamin (...23751-050 ≣E41Ch New Zealand
28Gligoric Svetozar...2447Janosevic Dragolj...23301-032 ≣E41It
41Somers StafJorgensen Vagn Rauhe0-139 ≣E41Ch World (juniors...
200Cardoso Carlos Al...2207Sharif Mehrshad (...23300-141 ≣E41Olympiad
30Szabo Laszlo (HUN)1903Pogats Jozsef (HUN)22301-034 ≣E41Ch Hungary
48Vladimirov Boris ...2340Lisitsyn Georgy (...0-133 ≣E41Ch URS (1/2 final)
46Furman Semen (RUS)2550Kotov Alexander A...25001-037 ≣E41Ch URS
54Enevoldsen Jens (...2350Larsen Bent (DEN)24150-129 ≣E41It
92Ojanen Kaarle S (...2335Euwe Max (NED)0-131 ≣E41Olympiad
25Taimanov Mark E (...2386Euwe Max (NED)0-141 ≣E41Tournament (candi...
17Najdorf Miguel (POL)2445Reshevsky Samuel ...24300-135 ≣E41Match
76Dittmann SieghardOlafsson Fridrik ...24340-140 ≣E41Olympiad (student...
37Milic Borislav (YUG)Matanovic Aleksan...24900-140 ≣E41Match
153Emma Jaime (ARG)2395Polo Gomez Vicent...22120-144 ≣E41Ch Buenos Aires (...
559Golovchenko Gleb ...2260Vlasov Egor (RUS)22510-136 ≣E41Ch City (juniors)...
462Usachyi Vladimir ...2245Baklan Vladimir (...25700-130 ≣E41It (open)
172Kolarov Atanas S ...2415Sapunov Lilko1-028 ≣E41Ch Bulgaria01 Mar 1966
728Salem A R Saleh (...2489Ashwath R (IND)22491-036 ≣E41Ch World (juniors...07 Aug 2011
111Letelier Rene (CHI)2151Redolfi1-049 ≣E41?
196Karjarinta TapaniNurmi Toivo0-128 ≣E41?
119Borja MEuwe Max (NED)0-134 ≣E41Olympiad
263Keene Raymond D (...2455Romanishin Oleg M...25600-140 ≣E41?
74Taimanov Mark E (...2386Antoshin Vladimir...22501-041 ≣E41Ch URS
47Furman Semen (RUS)2550Spassky Boris V (...25481-029 ≣E41Ch URS
24Reshevsky Samuel ...2430Euwe Max (NED)1-040 ≣E41Tournament (candi...
59Ciocaltea Viktor ...2420Safvat Yousof (IRN)0-146 ≣E41Olympiad (sf)06 Sep 1956
362Garralda AGarcia Trobat Fra...22910-133E41It (open)
2Gligoric Svetozar...2447Rossolimo Nichola...24501-041 ≣E41It
360RimpinevaKivisto Mikko (SIN)22771-026 ≣E41Ch Finland (corr.)
231Koski PekkaRantanen Veikko1-023 ≣E41?
58Barda Yngvar (NOR)2280Keller Dieter Ren...23590-128 ≣E41Olympiad (sf)02 Sep 1956
27Cuellar Gacharna ...2280Vesterinen J1-043 ≣E41Olympiad
337Michenka Jozef (CZE)2346Kazek Krzysztof (...20001-026 ≣E41It
676Miranda Yerisbel ...2194Garcia Pantoja Ro...23760-134 ≣E41Memorial J.Capabl...11 Jun 2009
16Idigoras GregorioMarini Luis0-143 ≣E41Ch Argentina
63Soos Bela (ROM)2281Ingerslev Aage (DEN)22301-039 ≣E41Olympiad16 Sep 1956
6Nikolac Juraj (CRO)2438Matanovic Aleksan...24900-128 ≣E41Ch Yugoslavia
22Averbakh Yuri L (...2445Euwe Max (NED)1-045 ≣E41Tournament (candi...
144Reshevsky Samuel ...2430Porath Yosef (ISR)23401-034 ≣E41Izt
44Idigoras GregorioSanguinetti J0-145 ≣E41Ch Argentina
632Iotov Valentin (BUL)2509Kuzubov Yuriy (UKR)25821-045 ≣E41It \07 Jun 2007
77SehlstedtBlatny Frantisek ...21120-141 ≣E41Olympiad (student...
14Tolush Alexander ...Troianescu Octav ...23301-037 ≣E41It
3Wood GabrielMitchell Graham1-028 ≣E41Ch World (corr.)
5Martin Pedro (ARG)2021Souza Mendes Joao1-034 ≣E41Zt
7Vukovic Sava (YUG)Rabar Braslav (YUG)0-123 ≣E41Ch Yugoslavia
8Vukovic Sava (YUG)Rabar Braslav (YUG)0-123 ≣E41Ch Yugoslavia
12Moisieev Oleg L (...2385Byvshev Vasily Mi...1-034 ≣E41Ch URS
15Kluger Gyula (HUN)2250Florian Tibor (HUN)1-038 ≣E41Ch Hungary
23Geller Efim P (RUS)2455Kotov Alexander A...25000-142 ≣E41Tournament (candi...
26Bronstein David I...2432Horberg Bengt-Eric1-033 ≣E41Olympiad
29Rabar Braslav (YUG)Janosevic Dragolj...23300-147 ≣E41It
33Uusi Gunnar (EST)2410Levenfish Grigori...1-028 ≣E41Ch Moscow
39Jorgensen Vagn RauheSpassky Boris V (...25480-133 ≣E41Ch World (juniors...
43Idigoras GregorioNajdorf Miguel (POL)24450-139 ≣E41Ch Argentina
45Furman Semen (RUS)2550Antoshin Vladimir...22500-146 ≣E41Ch URS
50Palmason Gudmundu...2270Einarsson Jon1-029 ≣E41It
53Kozma Julius (CSR)2380Lax Hendrich1-029 ≣E41Ch Czechoslovakia...
81Yepez Olavo (ECU)2305Blatny Frantisek ...21120-123 ≣E41Ch World (team) (...
82Dzieciolowski AdamWiniwarter Felix ...21760-133 ≣E41Memorial Przepiorka
84Panno Oscar (ARG)2438Garcia Vera Romeo1-032 ≣E41Ch Argentina
87Donner Jan-Hein (...2430Larsen Bent (DEN)24150-133 ≣E41Match
95Evans Larry M (USA)2470Sherwin James T (...22460-142 ≣E41Ch USA
104Donner Jan-Hein (...2430Clarke Peter H (ENG)23001-032 ≣E41Match \
105O'kelly De Galway...2460Secchi Ernesto1-042 ≣E41Ch World (corr.)
107Geller Efim P (RUS)2455Padevsky Nikola (...23551-044 ≣E41It
110Ivkov Borislav (SRB)2416Wexler Bernardo (...1-040 ≣E41?
112Souza Mendes JoaoShocron Ruben (USA)22591-046 ≣E41?
113Minev Nikolay N (...2370Blatny Frantisek ...21120-137 ≣E41It
115Donner Jan-Hein (...2430Matanovic Aleksan...24900-137 ≣E41It
120Thorbergsson Frey...2340Humerez C0-132 ≣E41Olympiad
123Galonska WIwaschin A1-046 ≣E41corr.
135Sanguinetti Raul ...2485Bielicki Carlos (...23151-040 ≣E41It
137Tanin SRausch Wilfried (...22451-029 ≣E41corr.
138Omari FatosSafvat Younnus0-142 ≣E41Olympiad
140Herren WalterBernhardt Rolf (GER)22880-140 ≣E41It
145Morgulov Alexsand...2335Sardarov Edward (...22060-131 ≣E41Ch Azerbaijan
146Jenik JHannemann H0-119 ≣E41Europe Tournament...
147Krutiansky Anatoly AZhdanov Igor0-127 ≣E41Ch Latvia
149Niemela IlmariSafvat Y1-029 ≣E41Olympiad
150Portisch Lajos (HUN)2523Porath Yosef (ISR)23401-044 ≣E41Olympiad
152Garcia Horacio2200Polo Gomez Vicent...22120-134 ≣E41Ch Buenos Aires
156Harjunpaa VeikkoTschernauskas0-134 ≣E41Cup Baltic (corr.)
159Lapienis Donatas ...2282Rusakov Jury (RUS)22470-124 ≣E41Ch Lithuania
161Bachtiar Arovah (...2285Donner Jan-Hein (...24300-144 ≣E41It \
162Ojanen Kaarle S (...2335Cuartas Carlos (COL)22561-026 ≣E41Olympiad
164Szabo Laszlo (HUN)1903Matanovic Aleksan...24901-033 ≣E41Match \
169Schweber Samuel (...2348Mecking Henrique ...25781-039 ≣E41Tournament
180ZverevicMarkovic Igor (CRO)22070-140 ≣E41Tournament (corr.)
181Cherepkov Alexand...2395Tseshkovsky Vital...24720-141 ≣E41Ch URS