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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
263Keene Raymond D (...2455Romanishin Oleg M...25600-140 ≣E41?
262Mueller Georg (GER)2054Zimmermann Martin...22381-042 ≣E47corr.
261Cherek GunterSchimron H0-129 ≣E40corr.
260Anton V (GER)Bunke Wilfried (GER)20901-046E47corr.
259Yrjonen MarkkuMolarius Reijo (FIN)1-036 ≣E41?
258Portisch Ferenc (...2475Rigo Janos (HUN)23851-036 ≣E41Ch Hungary
257Pinter Jozsef (HUN)2445Rigo Janos (HUN)23851-040 ≣E21Ch Hungary
256Chandler Murray G...2380Speelman Jonathan...24700-144 ≣E47It
255Webb Simon (ENG)2420Boehlig Heinz Dr ...22371-049 ≣E47It \04 Jun 1978
254Podgaets Mikhail ...2465Donchenko Anatoly...23851-033 ≣E41?
253Portisch Lajos (HUN)2630Sosonko Gennadi (...25751-038 ≣E41It (cat.14)
252Boudy Julio (CUB)2188Campos Lopez Mari...23551-042 ≣E41It
251Rodriguez Orestes...2485Olafsson Fridrik ...25300-126 ≣E41It (cat.10)
250Lerner Konstantin...2515Zaichik Gennadi (...24571-041 ≣E41Memorial V.Karsel...
249Kaarlonen KaarloMettinen Timo1-031 ≣E47?
248KeneszDuenhaupt HW (GER)1-040 ≣E41Ch Europe (team) ...
247Brilla Banfalvi S...Gisbrecht Ewgeni ...24151-049 ≣E47Ch Europe (team) ...
246Lukacs Peter (HUN)2460Barczay Laszlo (HUN)24650-122 ≣E47Ch Hungary
245Juhnke Karl (GER)2178Ruehrig Volkhard ...0-137 ≣E47Ch Germany (team)...
244Brinck-Claussen B...2263Fries-Nielsen Jen...23871-042 ≣E47Ch Denmark
243Ivanov Igor V (CAN)2424Popov Nikolay (MDA)24100-140 ≣E41Tournament
242Koski PekkaHeikkinen Jyrki0-125 ≣E47?
241Kuuskmaa EndelSarosi Zoltan (HUN)22970-144 ≣E47Olympiad (corr.)
240Christoffel Marti...Sarosi Zoltan (HUN)22971-040 ≣E47Olympiad (corr.)
239Reid Alan (SCO)2205Prizant Michael (...21360-120 ≣E47Ch Great Britain
238Knaak Rainer (GER)2520Timoscenko Gennad...24830-134 ≣E47?
237Tarjan James E (USA)2490Padevsky Nikola (...23551-030 ≣E41It
236Sydor Andrzej (POL)2325Pinkas Karol (POL)23201-045 ≣E41It (b)
235Hesselbarth Karlh...1808Klatt O1-035 ≣E47corr.
234Just Joachim (GER)2047Potthammel Joerg ...21300-140 ≣A17Ch DDR (corr.)
233Uimonen Matti (FIN)2098Lampinen Juha1-032 ≣E47?
232Palmo Pentti (FIN)2065Hietanen Pentti1-033 ≣E21?
231Koski PekkaRantanen Veikko1-023 ≣E41?
230Lombard Andre (SUI)2350Unzicker Wolfgang...25351-038 ≣E47Ch Switzerland
229Svensson Gert (SWE)2215Bengtsson Bo (SWE)23000-138 ≣E47Ch Sweden
228Sorsak Jozef Sr (...2125Kolesar Milan (SVK)21750-130 ≣E21It (b)
227Taimanov Mark E (...2580Zaichik Gennadi (...24571-039 ≣E21Olympiad URS
226Kozlovskaya Valen...2281Gaprindashvili No...24250-142 ≣E47Olympiad URS
225Gorniak Juri (MDA)Siniavsky Alexander1-021 ≣E21Olympiad URS
224Beliavsky Alexand...2500Slutzky Leonid (ISR)23281-030 ≣E47Olympiad URS
223CaridiCarrettoni1-026 ≣E47corr.
222Ball Stephen (CAN)2225Dobrich Walter (CAN)22300-128 ≣E47Ch Canada
221Emma Jaime (ARG)2405Link Hugo E (ARG)22751-048 ≣E47Tournament
220Dydyshko Viachesl...2512Begun Sergei M (BLR)22951-029 ≣E47?
219Garcia Martinez S...2400Debarnot Roberto ...24201-031 ≣E47It
218Miettinen ReinoBjorkqvist Armas1-028 ≣E47corr.
217TothJavelle Gabriel1-037 ≣E47It (cat.6)
216Knaak Rainer (GER)2515Garcia Gonzales G...24501-042 ≣E41Memorial J.Capabl...
215Donner Jan-Hein (...2495Knaak Rainer (GER)25151-038 ≣E47It \
214Loginov Valery A ...2486Ivanov Alexander ...20330-127 ≣A05Tournament (juniors)
213Bergdahl AssarNordstrom Felix (...21810-140 ≣E41corr.
212Reshevsky Samuel ...2560Tan Lian-Ann (SIN)23701-043 ≣E47Izt
211Rajkovic Dusan (SRB)2415Hort Vlastimil (GER)25901-034 ≣E47It
210Pamperin Gerhard ...1999Albert Garrote Am...18681-028 ≣E47corr.
209Ketzscher Roland ...2085Jordan Garcia Jos...1-032 ≣E47corr.
208Steiner Josef (AUT)2116Kauranen Risto0-130 ≣E47It (cat.7)
207Thapper RolandZlebcik L0-149 ≣E47Ch Europe (team) ...
206MoranSantoro O1-031 ≣E47Ch Europe (team) ...
205Corleo MargheritaZlebcik L0-138 ≣E47Ch Europe (team) ...
204Pulieri PaoloMicka0-132 ≣E47Ch Europe (corr.)
203Corleo GSchaetzel F0-124 ≣E47Ch Europe (corr.)
202Steiner Josef (AUT)2116Yudovich Mikhail ...1-033 ≣E41corr.
201Littleton Michael...2275Sharif Mehrshad (...23301-012 ≣E10Olympiad
200Cardoso Carlos Al...2207Sharif Mehrshad (...23300-141 ≣E41Olympiad
199Baart JoanWeyerstrass Ronal...0-148E41Match
198Bjerre Troels (DEN)2320Hamann Svend (DEN)24900-130 ≣E40Tournament
197Ivanchenko Sergey...2054Rovner Dmitry (RUS)0-138 ≣E41?
196Karjarinta TapaniNurmi Toivo0-128 ≣E41?
195FehsingerSchlosser1-029 ≣E41Europe Tournament...
194Wildt VolkerLederer G0-120 ≣A40corr.
193Schmidt Waldemar ...2029Reimer Karl17040-134 ≣E46corr.
192Hofmann GeorgeSchmid Hans-Peter...18990-142 ≣E41corr.
191Colon Romero MiguelO'kelly De Galway...24600-136 ≣E47It
190Poulsson Eivind (...2340Hernandez Roman (...23751-027 ≣E47Ch World (team) (...01 Aug 1969
189Gavrilovic Mikhail2200De Veauce Louis (...23001-047 ≣E47Ch Great Britain
188Taimanov Mark E (...2386Platonov Igor V (...24301-037 ≣E47Ch URS
187Teschner Rudolf (...2295Rossolimo Nichola...24500-140 ≣E47It
186Bronstein Luis (ARG)2349Schweber Samuel (...23480-138 ≣E41It
185Visier Segovia Fe...2233Medina-Garcia Ant...22531-042 ≣E41?
184Donner Jan-Hein (...2430Rovira Mas Jorge ...22901-036 ≣E41Olympiad
183Shashin Alexsande...2350Osnos Viatcheslav...23841-041 ≣E47Ch Leningrad
182Kausek KBubenik J1-037 ≣E47?
181Cherepkov Alexand...2395Tseshkovsky Vital...24720-141 ≣E41Ch URS
180ZverevicMarkovic Igor (CRO)22070-140 ≣E41Tournament (corr.)
179Klompus GrigoryRoskov V1-037 ≣E47corr.
178Portisch Lajos (HUN)2523Sarapu Ortvin (NZL)22551-036 ≣E47Izt
177Barczay Laszlo (HUN)2381Korchnoi Viktor (...25560-127 ≣E47Izt
176Diez Del Corral J...2415O'kelly De Galway...24600-144 ≣E41It
175Neumann AbrahamCabezudo Carlos1-026 ≣E46Ch World (juniors...
174Podgaets Mikhail ...2465Schoeneberg Manfr...22791-033 ≣E47Ch World (students)
173Lukic ArsenijeDamjanovic Mato (...23030-134 ≣E21It
172Kolarov Atanas S ...2415Sapunov Lilko1-028 ≣E41Ch Bulgaria01 Mar 1966
171Sychev AVlansky P1-049 ≣E47Ch URS (corr.)
170McSheehy CJLudgate Alan (IRL)22650-139 ≣E47Ch Great Britain ...
169Schweber Samuel (...2348Mecking Henrique ...25781-039 ≣E41Tournament
168Mecking Henrique ...2578Alvarez Jose_ (CUB)23681-022 ≣E47Zt
167Luckis Marcos2270Alvarez Jose_ (CUB)23680-126 ≣E47Zt
166Petrosian Tigran ...2580Spassky Boris V (...25481-041 ≣E47Ch World (match)
165Averbakh Yuri L (...2445Rozhdestvensky V1-048 ≣E47Ch URS (team)
164Szabo Laszlo (HUN)1903Matanovic Aleksan...24901-033 ≣E41Match \