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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
167Luckis Marcos2270Alvarez Jose_ (CUB)23680-126 ≣E47Zt
171Sychev AVlansky P1-049 ≣E47Ch URS (corr.)
173Lukic ArsenijeDamjanovic Mato (...23030-134 ≣E21It
175Neumann AbrahamCabezudo Carlos1-026 ≣E46Ch World (juniors...
502Elsness Frode (NOR)2395Khenkin Igor (GER)26330-150 ≣E41Cup Rilton
177Barczay Laszlo (HUN)2381Korchnoi Viktor (...25560-127 ≣E47Izt
178Portisch Lajos (HUN)2523Sarapu Ortvin (NZL)22551-036 ≣E47Izt
179Klompus GrigoryRoskov V1-037 ≣E47corr.
180ZverevicMarkovic Igor (CRO)22070-140 ≣E41Tournament (corr.)
181Cherepkov Alexand...2395Tseshkovsky Vital...24720-141 ≣E41Ch URS
182Kausek KBubenik J1-037 ≣E47?
183Shashin Alexsande...2350Osnos Viatcheslav...23841-041 ≣E47Ch Leningrad
184Donner Jan-Hein (...2430Rovira Mas Jorge ...22901-036 ≣E41Olympiad
185Visier Segovia Fe...2233Medina-Garcia Ant...22531-042 ≣E41?
187Teschner Rudolf (...2295Rossolimo Nichola...24500-140 ≣E47It
188Taimanov Mark E (...2386Platonov Igor V (...24301-037 ≣E47Ch URS
189Gavrilovic Mikhail2200De Veauce Louis (...23001-047 ≣E47Ch Great Britain
191Colon Romero MiguelO'kelly De Galway...24600-136 ≣E47It
193Schmidt Waldemar ...2029Reimer Karl17040-134 ≣E46corr.
194Wildt VolkerLederer G0-120 ≣A40corr.
195FehsingerSchlosser1-029 ≣E41Europe Tournament...
198Bjerre Troels (DEN)2320Hamann Svend (DEN)24900-130 ≣E40Tournament
223CaridiCarrettoni1-026 ≣E47corr.
199Baart JoanWeyerstrass Ronal...0-148E41Match
201Littleton Michael...2275Sharif Mehrshad (...23301-012 ≣E10Olympiad
202Steiner Josef (AUT)2116Yudovich Mikhail ...1-033 ≣E41corr.
203Corleo GSchaetzel F0-124 ≣E47Ch Europe (corr.)
205Corleo MargheritaZlebcik L0-138 ≣E47Ch Europe (team) ...
206MoranSantoro O1-031 ≣E47Ch Europe (team) ...
207Thapper RolandZlebcik L0-149 ≣E47Ch Europe (team) ...
208Steiner Josef (AUT)2116Kauranen Risto0-130 ≣E47It (cat.7)
209Ketzscher Roland ...2085Jordan Garcia Jos...1-032 ≣E47corr.
210Pamperin Gerhard ...1999Albert Garrote Am...18681-028 ≣E47corr.
211Rajkovic Dusan (SRB)2415Hort Vlastimil (GER)25901-034 ≣E47It
214Loginov Valery A ...2486Ivanov Alexander ...20330-127 ≣A05Tournament (juniors)
217TothJavelle Gabriel1-037 ≣E47It (cat.6)
220Dydyshko Viachesl...2512Begun Sergei M (BLR)22951-029 ≣E47?
221Emma Jaime (ARG)2405Link Hugo E (ARG)22751-048 ≣E47Tournament
222Ball Stephen (CAN)2225Dobrich Walter (CAN)22300-128 ≣E47Ch Canada
224Beliavsky Alexand...2500Slutzky Leonid (ISR)23281-030 ≣E47Olympiad URS
225Gorniak Juri (MDA)Siniavsky Alexander1-021 ≣E21Olympiad URS
226Kozlovskaya Valen...2281Gaprindashvili No...24250-142 ≣E47Olympiad URS
227Taimanov Mark E (...2580Zaichik Gennadi (...24571-039 ≣E21Olympiad URS
228Sorsak Jozef Sr (...2125Kolesar Milan (SVK)21750-130 ≣E21It (b)
230Lombard Andre (SUI)2350Unzicker Wolfgang...25351-038 ≣E47Ch Switzerland
232Palmo Pentti (FIN)2065Hietanen Pentti1-033 ≣E21?
234Just Joachim (GER)2047Potthammel Joerg ...21300-140 ≣A17Ch DDR (corr.)
235Hesselbarth Karlh...1808Klatt O1-035 ≣E47corr.
236Sydor Andrzej (POL)2325Pinkas Karol (POL)23201-045 ≣E41It (b)
237Tarjan James E (USA)2490Padevsky Nikola (...23551-030 ≣E41It
238Knaak Rainer (GER)2520Timoscenko Gennad...24830-134 ≣E47?
239Reid Alan (SCO)2205Prizant Michael (...21360-120 ≣E47Ch Great Britain
240Christoffel Marti...Sarosi Zoltan (HUN)22971-040 ≣E47Olympiad (corr.)
242Koski PekkaHeikkinen Jyrki0-125 ≣E47?
243Ivanov Igor V (CAN)2424Popov Nikolay (MDA)24100-140 ≣E41Tournament
245Juhnke Karl (GER)2178Ruehrig Volkhard ...0-137 ≣E47Ch Germany (team)...
246Lukacs Peter (HUN)2460Barczay Laszlo (HUN)24650-122 ≣E47Ch Hungary
261Cherek GunterSchimron H0-129 ≣E40corr.
247Brilla Banfalvi S...Gisbrecht Ewgeni ...24151-049 ≣E47Ch Europe (team) ...
248KeneszDuenhaupt HW (GER)1-040 ≣E41Ch Europe (team) ...
250Lerner Konstantin...2515Zaichik Gennadi (...24571-041 ≣E41Memorial V.Karsel...
252Boudy Julio (CUB)2188Campos Lopez Mari...23551-042 ≣E41It
253Portisch Lajos (HUN)2630Sosonko Gennadi (...25751-038 ≣E41It (cat.14)
254Podgaets Mikhail ...2465Donchenko Anatoly...23851-033 ≣E41?
256Chandler Murray G...2380Speelman Jonathan...24700-144 ≣E47It
257Pinter Jozsef (HUN)2445Rigo Janos (HUN)23851-040 ≣E21Ch Hungary
258Portisch Ferenc (...2475Rigo Janos (HUN)23851-036 ≣E41Ch Hungary
259Yrjonen MarkkuMolarius Reijo (FIN)1-036 ≣E41?
260Anton V (GER)Bunke Wilfried (GER)20901-046E47corr.
262Mueller Georg (GER)2054Zimmermann Martin...22381-042 ≣E47corr.
109Geller Efim P (RUS)2455Levin M1-044 ≣A15Ch Ukraine
332Lalic Bogdan (ENG)2485Ortega Lexy (ITA)24401-040 ≣E47It (cat.11)
501Babula Vlastimil ...2567Rigo Zsolt (SVK)22221-027 ≣E47Ch Slovakia
499Kodentsov Grisja ...2275Werle Jan (NED)22161-040 ≣E20Ch Netherlands (j...
299Gneusz WEichenberg1-034 ≣E41corr.
133Zilber Israel (USA)2400Roizman Michael (...21941-048 ≣E41Ch URS (team)
93Pachman Ludek (GER)2278Sterner Olaf1-043 ≣E47Olympiad
526Montalvo Alejandr...2259Warner Delisle (BAR)21761-031 ≣E47Sub-zt
518Salo Heikki (FIN)2242Nyysti Sampsa (FIN)22150-148 ≣E47Ch Finland (team)...
554Gutov Andrey (RUS)2366Kolomensky Vladim...23151-047 ≣E41Ch Russia (1/2 fi...
170McSheehy CJLudgate Alan (IRL)22650-139 ≣E47Ch Great Britain ...
79Lutikov Anatoly S...2515Aronson Lev (RUS)1-040 ≣E47Ch URS (1/2 final)
406Semkov Semko (BUL)2450Padreny J1-036 ≣E47It (open)
297Kausek KZlebcik L1-037 ≣E41Ch Czechoslovakia...
498Mihelakis GeorgiosGelashvili Tamaz ...25311-019 ≣E47It (open)
497Cody Philip CMurden Clive1-040 ≣E47corr. ICCF
492Gislason IngolfurSteindorsson Sigu...20520-135 ≣E47It (open) \
491Gual Pascual Anto...2433Kolev Atanas (BUL)25580-141 ≣E47It (open)
569Ramirez Alejandro...2519Hernandez Holden ...24731-039 ≣E46Memorial C.Torre ...
546Davydenko Andrey ...2080Novoselsky Oleg (...21950-140 ≣E46Memorial Y.Sakhar...
264Clayton JAWilson PA1-048 ≣A15corr.
488Nor Igor (ISR)2280Jagodzinski Andre...22150-141 ≣E47It (cat.2)
326Frieser Klaus (GER)2151Prizant Michael (...21360-138 ≣E41Europe Tournament...
538Netusil Miroslav ...2306Prandstetter Edua...23650-135 ≣E47Czech League (V) ...
446Beliavsky Alexand...2620Lendwai Reinhard ...23701-039 ≣E47It (open)
389Bazan GerardoKanefsck Gustavo ...23731-034 ≣E41It (open)
487Michenka Jozef (CZE)2315Klima Lukas (CZE)22851-038 ≣E47It
599Brener Ilja (GER)2334Warakomski Tomasz...23960-124 ≣E40Ch Europe (junior...
323CartensLaarhoven Thijs (...22110-143 ≣E47corr.
213Bergdahl AssarNordstrom Felix (...21810-140 ≣E41corr.