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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
547Ferrufino Boris (...2201Pecorelli Garcia ...24510-133 ≣E47It \
463Pihlajamaki JaakkoPennanen Eino0-130 ≣E41?
611Iotov Valentin (BUL)2503Petkov Vladimir (...24431-031 ≣E47Ch Bulgaria
434Vaisser Anatoly (...2555Petursson Margeir...25651-026 ≣E47It (open)
275Mann VPiastowski Kurt (...19780-124 ≣E41Ch DDR (corr.)
291Hesselbarth Karlh...1808Piastowski Kurt (...19781-039 ≣E41Ch DDR (corr.)
339BaruckerPiekarz P1-022 ≣E47corr.
349SchepersPiekorz Roland19300-132 ≣E41Ch DDR (corr.)
273Lukacs Peter (HUN)2405Pinkas Karol (POL)23201-041 ≣E21It (a)
236Sydor Andrzej (POL)2325Pinkas Karol (POL)23201-045 ≣E41It (b)
415Erwes Theo (GER)2104Pioch Thomas (GER)21651-043 ≣E47Hessenliga 1993/94
439Hultin Per (SWE)2102Plato Bo (SWE)20800-130 ≣E47Ch Sweden (team)
188Taimanov Mark E (...2386Platonov Igor V (...24301-037 ≣E47Ch URS
750Shiva Ravi Pillai...1861Podolchenko Evgen...24640-127 ≣E46Cup Mayors (open)10 Jun 2012
757Meins Gerlef (GER)2475Poetsch Hagen (GER)24361-041 ≣E47It \14 Jul 2012
158Farago Ivan (HUN)2488Pogats Jozsef (HUN)22301-028 ≣E47Ch Hungary
30Szabo Laszlo (HUN)1903Pogats Jozsef (HUN)22301-034 ≣E41Ch Hungary
153Emma Jaime (ARG)2395Polo Gomez Vicent...22120-144 ≣E41Ch Buenos Aires (...
152Garcia Horacio2200Polo Gomez Vicent...22120-134 ≣E41Ch Buenos Aires
654Baciu Stefan (ROM)2242Pop Alexandru (ROM)19660-136 ≣E47Tournament (open)20 Jul 2008
243Ivanov Igor V (CAN)2424Popov Nikolay (MDA)24100-140 ≣E41Tournament
144Reshevsky Samuel ...2430Porath Yosef (ISR)23401-034 ≣E41Izt
10Bronstein David I...2432Porath Yosef (ISR)23401-049 ≣E47Olympiad
150Portisch Lajos (HUN)2523Porath Yosef (ISR)23401-044 ≣E41Olympiad
234Just Joachim (GER)2047Potthammel Joerg ...21300-140 ≣A17Ch DDR (corr.)
395Muir Andrew J (SCO)2360Prandstetter Edua...23750-149E47Cup European Club
288Knaak Rainer (GER)2490Prandstetter Edua...24401-027 ≣E47Ch Czechoslovakia...
383Michenka Jozef (CZE)2346Prandstetter Edua...24100-133 ≣E47Ch Czechoslovakia...
538Netusil Miroslav ...2306Prandstetter Edua...23650-135 ≣E47Czech League (V) ...
392Hlavnicka Jiri (CZE)2243Prandstetter Edua...24100-129 ≣E47Ch Czech Chess Union
326Frieser Klaus (GER)2151Prizant Michael (...21360-138 ≣E41Europe Tournament...
239Reid Alan (SCO)2205Prizant Michael (...21360-120 ≣E47Ch Great Britain
664Marinone Lucio (ITA)2008Provera Emanuele ...21380-131 ≣E41It (open)28 Dec 2008
625Henrichs Thomas (...2498Prusikin Michael ...25640-126 ≣E47Ch Germany23 Jan 2007
157MeeristePulliainen Erkki1-024 ≣E47Cup Baltic (corr.)
442Karp Serge (LUX)2095Pytel Krzysztof (...24250-122 ≣E10It (open)
277Loschi EQuattrocchi Gaetano1-022E46?
8Vukovic Sava (YUG)Rabar Braslav (YUG)0-123 ≣E41Ch Yugoslavia
7Vukovic Sava (YUG)Rabar Braslav (YUG)0-123 ≣E41Ch Yugoslavia
38Fuderer Andrija (...Rabar Braslav (YUG)0-139 ≣E47Ch Yugoslavia (ma...
51O'kelly De Galway...2460Rabar Braslav (YUG)1-030 ≣E47It
274Hawelko Marek (POL)2380Radziejewski Dari...23001-045 ≣E47It
650Medina Sanchez Gi...1711Ramirez Alvarez R...20360-134 ≣D31It (open)26 Apr 2008
231Koski PekkaRantanen Veikko1-023 ≣E41?
137Tanin SRausch Wilfried (...22451-029 ≣E41corr.
111Letelier Rene (CHI)2151Redolfi1-049 ≣E41?
441Sanchez Cutillas ...2083Reig Albero Ferra...21621-029 ≣E41Ch Aragon (team)
193Schmidt Waldemar ...2029Reimer Karl17040-134 ≣E46corr.
117Schweber Samuel (...2348Reinhardt Enrique...1-046 ≣E47Ch Argentina (pla...
62Tserendagva D (MGL)Reissmann Paul (PRO)1-030 ≣E40Olympiad12 Sep 1956
68Golz Werner (GER)2410Rellstab Ludwig S...22650-124 ≣E40It
17Najdorf Miguel (POL)2445Reshevsky Samuel ...24300-135 ≣E41Match
313Portisch Ferenc (...2405Rigo Janos (HUN)23190-141 ≣E47It (open)
258Portisch Ferenc (...2475Rigo Janos (HUN)23851-036 ≣E41Ch Hungary
257Pinter Jozsef (HUN)2445Rigo Janos (HUN)23851-040 ≣E21Ch Hungary
501Babula Vlastimil ...2567Rigo Zsolt (SVK)22221-027 ≣E47Ch Slovakia
644Chuprikov Dmitry ...2443Rodin Dmitrij (RUS)24211-046 ≣E47Ch City06 Mar 2008
401Reinemer Frank (GER)2275Roemling Sven (GER)21601-046 ≣E41It (open)
133Zilber Israel (USA)2400Roizman Michael (...21941-048 ≣E41Ch URS (team)
265Podgaets Mikhail ...2450Romanishin Oleg M...25601-049 ≣E41?
263Keene Raymond D (...2455Romanishin Oleg M...25600-140 ≣E41?
179Klompus GrigoryRoskov V1-037 ≣E47corr.
78Panno Oscar (ARG)2438Rossetto Hector (...22851-035 ≣A17Zt
187Teschner Rudolf (...2295Rossolimo Nichola...24500-140 ≣E47It
2Gligoric Svetozar...2447Rossolimo Nichola...24501-041 ≣E41It
184Donner Jan-Hein (...2430Rovira Mas Jorge ...22901-036 ≣E41Olympiad
96Prokhorovich Taras ERovner Dmitry Osi...1-048 ≣E47Tournament
70Furman Semen (RUS)2550Rovner Dmitry (RUS)1-023 ≣E47Ch Leningrad
197Ivanchenko Sergey...2054Rovner Dmitry (RUS)0-138 ≣E41?
568Zilberstein Dmitr...2379Rowley Robert (USA)22821-032 ≣E47It \
342Balashov Yuri S (...2540Rozentalis Eduard...24901-032 ≣E47Ch URS (1 liga) (...
165Averbakh Yuri L (...2445Rozhdestvensky V1-048 ≣E47Ch URS (team)
245Juhnke Karl (GER)2178Ruehrig Volkhard ...0-137 ≣E47Ch Germany (team)...
159Lapienis Donatas ...2282Rusakov Jury (RUS)22470-124 ≣E41Ch Lithuania
695Kozenkov Valery (...2132Rutman Aleksandr ...21441-027 ≣E40It (open) \24 Jun 2010
404Thibodeau ChrisRyan R11-010 ≣A40It \
635Kozakov Mikhail (...2449Rybak Tomasz (POL)22821-041 ≣E47Tournament (open)28 Jul 2007
500Bernat Marcin (POL)2227Rybak Tomasz (POL)21631-030 ≣E41Ch Poland (team) ...
600Laasanen Teemu (FIN)2140Saastamoinen Aarn...21650-147 ≣E47Ch Finland (team)...10 Sep 2005
139Noi (LUX)Safvat J (IRI)0-120 ≣A06Olympiad
91Johannsson Ingi R...2410Safvat Y1-038 ≣A15Olympiad
149Niemela IlmariSafvat Y1-029 ≣E41Olympiad
88Angos AlexanderSafvat Y0-121 ≣E10Olympiad
138Omari FatosSafvat Younnus0-142 ≣E41Olympiad
59Ciocaltea Viktor ...2420Safvat Yousof (IRN)0-146 ≣E41Olympiad (sf)06 Sep 1956
761Spindelboeck Gern...2227Sakelsek Tadej (SLO)24361-026 ≣E46It (open)26 Aug 2012
32Najdorf Miguel (POL)2445Salas Romo Julio ...1-031 ≣E47It
154Binkauskas BSalminsh Gedimins...0-139 ≣E47Cup Baltic (corr.)
717Sokolov Ivan (NED)2673Sammalvuo Tapani ...24771-034 ≣E47It (open)13 Mar 2011
699Lund Esben (DEN)2401Sammalvuo Tapani ...24651-040 ≣A40Memorial Heini Ol...24 Jul 2010
656Bagapsh Astamur (...Sanakoev Grigory ...22590-120 ≣E21It (open) (a)03 Aug 2008
604Galvan Jesus (PER)2226Sanchez Aller Fer...22740-123 ≣E47It (open)15 Nov 2005
701Del Rio Angelis S...2515Sanchez Gonzalez ...22881-046 ≣E47It (open)11 Sep 2010
710Nieto De La Cruz ...2154Sanchez Gonzalez ...22861-043 ≣E47Liga Madrilena 20...09 Jan 2011
44Idigoras GregorioSanguinetti J0-145 ≣E41Ch Argentina
206MoranSantoro O1-031 ≣E47Ch Europe (team) ...
172Kolarov Atanas S ...2415Sapunov Lilko1-028 ≣E41Ch Bulgaria01 Mar 1966
178Portisch Lajos (HUN)2523Sarapu Ortvin (NZL)22551-036 ≣E47Izt
145Morgulov Alexsand...2335Sardarov Edward (...22060-131 ≣E41Ch Azerbaijan
240Christoffel Marti...Sarosi Zoltan (HUN)22971-040 ≣E47Olympiad (corr.)