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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
19Donner Jan-Hein (...2430Kupper Josef (SUI)23741-035 ≣A40It
381Siciarz JLewandowski K22001-035 ≣E47Ch Poland (corr.)
703Pesqueira Jose (ARU)1982Dzhumabayev Rinat...25470-135 ≣E41Olympiad21 Sep 2010
142Lampela OlaviEkblom PE (FIN)1-035 ≣A40?
400Sherbakov Ruslan ...2580Kupreichik Viktor...25351-035 ≣E47It \
447Van Den Bergh Jan...2068Bjarnason Saevar ...22850-135 ≣E11It (open)
449Voutilainen HannuIrvin Jimmy0-135 ≣E47?
451Veenstra HylkeVan Hassel Rene0-135 ≣E47Ch Netherlands (t...
694Potkin Vladimir (...2630Corrales Fidel (CUB)25991-035 ≣E40Memorial J.Capabl...16 Jun 2010
478Nor Igor (ISR)2280Seidl Juergen (GER)21701-035 ≣E41Memorial Karl Wag...
78Panno Oscar (ARG)2438Rossetto Hector (...22851-035 ≣A17Zt
578Vdovichenko Vladi...2219Kucherenko Daniil...23130-135 ≣E46Ch Ukraine (team)20 May 2004
492Gislason IngolfurSteindorsson Sigu...20520-135 ≣E47It (open) \
279Easton Alex (SCO)2147Miles Jana0-135 ≣E47It (open)
576Verzhansky Alexan...2327Flyagin Dmitriy (...1-035 ≣E41Ch Russia (junior...
661Korobov Anton (UKR)2605Wang Hao (CHN)26960-135 ≣E47World Mindsports ...04 Oct 2008
642Potkin Vladimir (...2613Kiselev Vitaliy (...25271-035 ≣E47It (open)07 Feb 2008
655Perez Inclan Jorg...1626Lorinczi Retek Pe...16861-035 ≣E41It (open)
652Fistek Dariusz (POL)2265Sopur Lech (POL)24250-135 ≣E10It (open)28 Apr 2008
125Trmal Jaroslav (CZE)2184Altshul M1-035 ≣E47Ch Czechoslovakia
609Berkes Ferenc (HUN)2589Ilincic Zlatko (SRB)24511-035 ≣E47Ch Hungary (team)...12 Feb 2006
612Guseva Marina (RUS)2306Kovanova Baira (RUS)23101-035 ≣E47Ch Russia (junior...10 Mar 2006
302MolzahnSelke Horst1-035E47corr.
746Salinas Herrera P...2366Valiente Cristoba...22571-035 ≣E47It (cat.3)02 Apr 2012
538Netusil Miroslav ...2306Prandstetter Edua...23650-135 ≣E47Czech League (V) ...
596Ovod Evgenija (RUS)2366Kosintseva Nadezh...24860-135 ≣E47Ch Europe (w)14 Jun 2005
40Schweber Samuel (...2348Spassky Boris V (...25480-135 ≣E41Ch World (juniors...
650Medina Sanchez Gi...1711Ramirez Alvarez R...20360-134 ≣D31It (open)26 Apr 2008
144Reshevsky Samuel ...2430Porath Yosef (ISR)23401-034 ≣E41Izt
758Zwirs Nico (NED)2173Leenhouts Koen (NED)23840-134 ≣E11It (open)07 Aug 2012
9Germek MilanO'kelly De Galway...24600-134 ≣E41It
102Spassky Boris V (...2548Ghitescu Theodor ...23841-034 ≣E21Ch World (students)
30Szabo Laszlo (HUN)1903Pogats Jozsef (HUN)22301-034 ≣E41Ch Hungary
119Borja MEuwe Max (NED)0-134 ≣E41Olympiad
285Hoi Carsten (DEN)2390Norgaard Jesper (...24081-034 ≣E47Tournament
676Miranda Yerisbel ...2194Garcia Pantoja Ro...23760-134 ≣E41Memorial J.Capabl...11 Jun 2009
5Martin Pedro (ARG)2021Souza Mendes Joao1-034 ≣E41Zt
12Moisieev Oleg L (...2385Byvshev Vasily Mi...1-034 ≣E41Ch URS
71Taimanov Mark E (...2386Nedeljkovic Sreck...21881-034 ≣A17Match \
72Taimanov Mark E (...2386Nedeljkovic Sreck...21881-034 ≣A17Match \
152Garcia Horacio2200Polo Gomez Vicent...22120-134 ≣E41Ch Buenos Aires
156Harjunpaa VeikkoTschernauskas0-134 ≣E41Cup Baltic (corr.)
173Lukic ArsenijeDamjanovic Mato (...23030-134 ≣E21It
193Schmidt Waldemar ...2029Reimer Karl17040-134 ≣E46corr.
211Rajkovic Dusan (SRB)2415Hort Vlastimil (GER)25901-034 ≣E47It
238Knaak Rainer (GER)2520Timoscenko Gennad...24830-134 ≣E47?
626Grigoriants Serge...2591Dgebuadze Alexand...25051-034 ≣E47It (open)09 Mar 2007
299Gneusz WEichenberg1-034 ≣E41corr.
709Gonzalez Manchon ...2091Kolev Atanas (BUL)25710-134 ≣E46It (open)04 Dec 2010
717Sokolov Ivan (NED)2673Sammalvuo Tapani ...24771-034 ≣E47It (open)13 Mar 2011
389Bazan GerardoKanefsck Gustavo ...23731-034 ≣E41It (open)
516Albarran Gustavo ...2255Martello J A (ARG)1-034 ≣E47It \
269Luft Josef2155Grzeskowiak Felix1-034 ≣E47World Tournament ...
294DadicUlkjar1-034 ≣E47corr.
312Hoi Carsten (DEN)2420Kormanyos Zoltan ...23141-034 ≣E41It (open)
330Vogel Robert (GER)2256Waldow Frank1-034 ≣E41Bundesliga 1987/88
384Reading MichaelLittke Adam (CAN)23100-134 ≣E47It (open)
443Sasata Robert (CAN)2279Ferguson Bobby (USA)22320-134 ≣E21It (open)
427Storkebaum Karl H...Bockius Albert (GER)21621-034 ≣E46Memorial Weber (o...
475Doyle JimGrant Alan (SCO)21860-134 ≣E47Ch West Scotland
514Zuehlke Burkhard ...2173Ertl Rolf21601-034 ≣E47Bayern Regionalli...
528Prudnikova Svetla...2411Baginskaite Camil...23361-034 ≣E47Ch World FIDE (KO...
543Muse Drazen (CRO)2442Ellers Holger (GER)24251-034 ≣A05Bundesliga 2002/03
549Gutierrez Lopez C...2172Jimenez Ruiz Jose...19800-134 ≣A40Ch Malaga (qual)
555Johannessen Leif ...2527Moen Andreas (NOR)22650-134 ≣A15It (cat.6)
556Jasny Stanislav (...1858Machycek Lubomir ...22711-034 ≣E47It (open)
585Lugovoi Aleksei (...2547Naiditsch Arkadij...26411-034 ≣E47It (open) \16 Feb 2005
646Ovod Evgenija (RUS)2429Iljushina Olga (RUS)23111-034 ≣E47Ch Russia (club) (w)04 Apr 2008
666Piorun Kacper (POL)2457Bartel Mateusz (POL)26190-134 ≣D31Ch Poland05 Feb 2009
707Ben Arzi Ido (ISR)2183Abasov Nijat Azad...25170-134 ≣E47Ch World (juniors...26 Oct 2010
718Tyn Ondrej1902Pavelek Karel (CZE)21550-134E21Czech League 2010...03 Apr 2011
753Ivana Maria Furtado2065Jargalmaa Sarantuya17731-034 ≣D02Ch Asia (juniors)...27 Jun 2012
362Garralda AGarcia Trobat Fra...22910-133E41It (open)
202Steiner Josef (AUT)2116Yudovich Mikhail ...1-033 ≣E41corr.
383Michenka Jozef (CZE)2346Prandstetter Edua...24100-133 ≣E47Ch Czechoslovakia...
638Batsiashvili Nino...2313Babujian Levon (ARM)24280-133 ≣E21It (open)17 Sep 2007
708Anand Viswanathan...2800Bacrot Etienne (FRA)27161-033 ≣E47It \30 Oct 2010
254Podgaets Mikhail ...2465Donchenko Anatoly...23851-033 ≣E41?
448Mackie John JMrugala Artur0-133 ≣E46?
232Palmo Pentti (FIN)2065Hietanen Pentti1-033 ≣E21?
494Kay JBStracy D (NZL)1-033 ≣E41Ch North Island (b)
762Maurer Fritz (SUI)2152Duruz Noe (SUI)19301-033 ≣E47It (open)15 Oct 2012
639Enchev Evgeni (BUL)1988Nikolova Adriana ...22250-133 ≣E40Ch Bulgaria (stud...10 Nov 2007
373Gulko Boris F (USA)2565Gruenfeld Yehuda ...24801-033 ≣E47It (open)
607Perepelitsky Edwa...2123De Guzman Ricardo...23830-133 ≣E47It (open)19 Dec 2005
39Jorgensen Vagn RauheSpassky Boris V (...25480-133 ≣E41Ch World (juniors...
577Gonzalez Garcia J...2447Hernandez Holden ...24731-033 ≣E47Memorial J.Capabl...12 May 2004
567Zilberstein Dmitr...2379Del Pilar Reynald...23061-033 ≣E41It \
700Zilka Stepan (CZE)2479Bugalski Michal (...22401-033 ≣E47It (open)08 Aug 2010
688Zilberman Yaacov ...2439Lerner Konstantin...25490-133 ≣E47Memorial L.Slutsk...19 Dec 2009
82Dzieciolowski AdamWiniwarter Felix ...21760-133 ≣E41Memorial Przepiorka
11Furman Semen (RUS)2550Kondratiev Pavel ...1-033 ≣E47Ch URS (1/2 final)
551Khurtsidze Nino (...2433Balashov Yuri S (...25211-033 ≣A40It (open) \
630Hesselbarth Karlh...1878Bauer Norbert (GER)21180-133 ≣E47It (open) \16 May 2007
640Kanakaris G (GRE)2236Bakos Balazs (HUN)24010-133 ≣E47Ch World (juniors...28 Nov 2007
87Donner Jan-Hein (...2430Larsen Bent (DEN)24150-133 ≣E41Match
547Ferrufino Boris (...2201Pecorelli Garcia ...24510-133 ≣E47It \
26Bronstein David I...2432Horberg Bengt-Eric1-033 ≣E41Olympiad
738Netusil Miroslav ...2318Sura Jaroslav (CZE)21871-033 ≣E47Ch Czech Republic...27 Nov 2011
388Tsevremes Ioannis...1955Tolnai Tibor (HUN)24950-133 ≣E47It (open)