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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
556Jasny Stanislav (...1858Machycek Lubomir ...22711-034 ≣E47It (open)
748Schwalfenberg Joe...Maehrlein Christoph1-049 ≣A46Verbandsliga Bade...29 Apr 2012
649Mareco Sandro (ARG)2481Mahia Gustavo (ARG)24170-141 ≣A09Ch Argentina (1/2...14 Apr 2008
622Ackermann Peter1935Malzacher Wolfgang18080-126 ≣A46Verbandsliga Bade...26 Nov 2006
523Hasidovski Arnold...2202Marcotulli Giancarlo1-043 ≣E47Tournament (IECG)
16Idigoras GregorioMarini Luis0-143 ≣E41Ch Argentina
531Motuz Karol (SVK)2354Markos Jan (SVK)24350-137 ≣E47Extra League 2001/02
180ZverevicMarkovic Igor (CRO)22070-140 ≣E41Tournament (corr.)
516Albarran Gustavo ...2255Martello J A (ARG)1-034 ≣E47It \
341Dive Russell John...2339Martin Benjamin (...23751-050 ≣E41Ch New Zealand
347Also LuisMartin Fernandez ...21561-019 ≣E47It (open)
409Rodriguez Lopez R...2313Martin Garcia Jua...21420-137 ≣A17It (open)
480Cody Philip CMary Patrick0-145 ≣E47?
485Mancini Mario (FRA)2285Marzolo Cyril (FRA)23701-024 ≣E47Ch France (b)
164Szabo Laszlo (HUN)1903Matanovic Aleksan...24901-033 ≣E41Match \
13Kotov Alexander A...2500Matanovic Aleksan...24901-041 ≣E41Izt
6Nikolac Juraj (CRO)2438Matanovic Aleksan...24900-128 ≣E41Ch Yugoslavia
115Donner Jan-Hein (...2430Matanovic Aleksan...24900-137 ≣E41It
37Milic Borislav (YUG)Matanovic Aleksan...24900-140 ≣E41Match
667Yurkov Alexey (UKR)2163Mazurchak Bogdan ...21870-139 ≣E47Ch Ukraine (junio...14 Feb 2009
407Livshits Ron (CAN)2336McGarrett Ian (CAN)21721-025 ≣E47It
169Schweber Samuel (...2348Mecking Henrique ...25781-039 ≣E41Tournament
185Visier Segovia Fe...2233Medina-Garcia Ant...22531-042 ≣E41?
249Kaarlonen KaarloMettinen Timo1-031 ≣E47?
204Pulieri PaoloMicka0-132 ≣E47Ch Europe (corr.)
486Galt ArMikhailov Sergey ...23970-130 ≣E41It (open)
279Easton Alex (SCO)2147Miles Jana0-135 ≣E47It (open)
553Prasad Devaki V (...2400Mishra Neeraj-Kum...23411-043 ≣E47Ch India
3Wood GabrielMitchell Graham1-028 ≣E41Ch World (corr.)
555Johannessen Leif ...2527Moen Andreas (NOR)22650-134 ≣A15It (cat.6)
259Yrjonen MarkkuMolarius Reijo (FIN)1-036 ≣E41?
371Wiederkehr WMold C1-028 ≣E47corr.
536Johannessen Leif ...2527Moussa Alaa-Eddin...22121-045 ≣E47Olympiad
448Mackie John JMrugala Artur0-133 ≣E46?
722Schreiner Till (GER)2150Mueller Nick19580-133 ≣E47Ch Germany (junio...14 Jun 2011
497Cody Philip CMurden Clive1-040 ≣E47corr. ICCF
315Gil Capape Javier...2444Murshed Niaz (BAN)24421-037 ≣E47Ch World (juniors...
431Glianietz Alexand...2398Murzin Lenar (RUS)22651-029 ≣E47Ch Russia (1/2 fi...
673Bublei Pavel (RUS)2189Musaev Rasul (RUS)21100-129 ≣E41Ch Russia (junior...19 Apr 2009
585Lugovoi Aleksei (...2547Naiditsch Arkadij...26411-034 ≣E47It (open) \16 Feb 2005
681Aronian Levon (ARM)2768Naiditsch Arkadij...26971-049 ≣E47Ch World (active)...
698Ponomariov Ruslan...2749Naiditsch Arkadij...26741-046 ≣E47It (cat.20)23 Jul 2010
43Idigoras GregorioNajdorf Miguel (POL)24450-139 ≣E41Ch Argentina
56Wexler FranciscoNajdorf Miguel (POL)24450-143 ≣A17It
653Zavadil Michal (CZE)2057Narayanan Srinath...24120-122 ≣E41It (cat.1) \05 Jul 2008
396Yepez Olavo (ECU)2305Narciso Dublan Ma...23000-123 ≣E40It (open)
72Taimanov Mark E (...2386Nedeljkovic Sreck...21881-034 ≣A17Match \
71Taimanov Mark E (...2386Nedeljkovic Sreck...21881-034 ≣A17Match \
584Korotylev Alexey ...2604Negi Parimarjan (...23521-039 ≣E47It (cat.7)23 Jan 2005
413Komljenovic Luka ...2228Niedermaier Hans ...22690-140 ≣E47Bundesliga (2nd) ...
483Kveinys Aloyzas (...2545Nikcevic Nebojsa ...24801-035 ≣A13It (open)
467Karayannis Athana...2245Nikolaidis Ioanni...25200-143 ≣E41It (open)
470Burlov Vassili (RUS)2345Nikolenko Oleg (RUS)24900-143 ≣E41Ch Moscow
726Atalik Ekaterina ...2481Nikolova Adriana ...22681-032 ≣E47Ch Turkey (team)07 Jul 2011
662Andreev Stanislav...2097Nikolova Adriana ...22810-119 ≣E47It \02 Nov 2008
643Andreev Stanislav...2097Nikolova Adriana ...22811-041 ≣E47It \24 Feb 2008
639Enchev Evgeni (BUL)1988Nikolova Adriana ...22250-133 ≣E40Ch Bulgaria (stud...10 Nov 2007
692Ruschukov BojanNikolova Adriana ...22950-137 ≣E40It \22 May 2010
674Nikolov Sasho (BUL)2416Nikolov Momchil (...25170-136 ≣E47Ch Bulgaria (team)09 May 2009
637Nikolov Sasho (BUL)2409Nikolov Momchil (...24890-122 ≣E47Memorial Kesarovs...13 Sep 2007
430Mertanen Janne (FIN)2369Nokso-Koivisto An...22350-141 ≣E47Ch Finland (team)...
213Bergdahl AssarNordstrom Felix (...21810-140 ≣E41corr.
285Hoi Carsten (DEN)2390Norgaard Jesper (...24081-034 ≣E47Tournament
546Davydenko Andrey ...2080Novoselsky Oleg (...21950-140 ≣E46Memorial Y.Sakhar...
398Hoszowski PiotrNowak Z1-037 ≣E47Ch Poland (corr.)
759Arishin Sergei (KGZ)2183Nukin Ashat (KAZ)23470-125 ≣E21Memorial Izmailov...12 Aug 2012
196Karjarinta TapaniNurmi Toivo0-128 ≣E41?
518Salo Heikki (FIN)2242Nyysti Sampsa (FIN)22150-148 ≣E47Ch Finland (team)...
268Hermlin Aarne (EST)2233Oberwalthal1-047 ≣E47World Tournament ...
306Ostenstad Berge (...2315O'Cinneide Mel (IRL)22341-028 ≣E46Ch World (juniors...03 Aug 1984
634Kashlinskaya Alin...2263Ogleznev Alexandr...22621-041 ≣E47It \22 Jul 2007
176Diez Del Corral J...2415O'kelly De Galway...24600-144 ≣E41It
9Germek MilanO'kelly De Galway...24600-134 ≣E41It
191Colon Romero MiguelO'kelly De Galway...24600-136 ≣E47It
426Maki-Torkko Martt...2195Oksanen Yrjo1-032 ≣E47?
76Dittmann SieghardOlafsson Fridrik ...24340-140 ≣E41Olympiad (student...
251Rodriguez Orestes...2485Olafsson Fridrik ...25300-126 ≣E41It (cat.10)
60Uhlmann Wolfgang ...2434Olafsson Fridrik ...24340-130 ≣A17Olympiad10 Sep 1956
332Lalic Bogdan (ENG)2485Ortega Lexy (ITA)24401-040 ≣E47It (cat.11)
103Geller Efim P (RUS)2455Osnos Viatcheslav...23841-050 ≣E47Ch URS (1/2 final)
183Shashin Alexsande...2350Osnos Viatcheslav...23841-041 ≣E47Ch Leningrad
444Tikkanen Kari (FIN)2265Osterman Georg (FIN)22811-048 ≣E47?
481Nesic Nebojsa (SRB)2175Ostojic Nikola (SRB)24450-138 ≣E47It (cat.8)
370Anapolsky Sergey ...2407Ostojic Nikola (SRB)24461-039 ≣E47Match \
97Gligoric Svetozar...2447Pachman Ludek (GER)22781-042 ≣E47Izt
237Tarjan James E (USA)2490Padevsky Nikola (...23551-030 ≣E41It
107Geller Efim P (RUS)2455Padevsky Nikola (...23551-044 ≣E41It
163Furman Semen (RUS)2550Padevsky Nikola (...23551-042 ≣E41Ch Czechoslovakia...
406Semkov Semko (BUL)2450Padreny J1-036 ≣E47It (open)
721Kostov Galin (BUL)2197Pantev Veselin (BUL)23730-145 ≣E47Ch Bulgaria (team...05 Jun 2011
682Rees Ioan (WLS)2339Pap Gyula (HUN)25030-146 ≣E10It (cat.8)03 Aug 2009
601Peralta Fernando ...2538Papp Gabor (HUN)24740-125 ≣E47It (open)24 Oct 2005
617Ganaus Hannes (AUT)2326Papp Gabor (HUN)24660-132 ≣E47It (open)14 Jul 2006
591Drozdowski Kacper...1812Paprocki Jaroslaw...22270-148 ≣E21Tournament (regio...04 Apr 2005
510Korotylev Alexey ...2528Paramonov Dimitri...23321-032 ≣E47Memorial M.Chigor...
718Tyn Ondrej1902Pavelek Karel (CZE)21550-134E21Czech League 2010...03 Apr 2011
615Galopoulos N (GRE)2063Pavlidis Antonios...21070-124 ≣E47Ch World (schools)01 May 2006
598Galopoulos N (GRE)2016Pavlidis Antonios...20100-145 ≣E47Ch Greece (team)08 Jul 2005
697Kapnisis Spyridon...2511Pavlidou Ekaterin...21911-041 ≣E47Cup Artemis (open)14 Jul 2010
730Peralta Fernando ...2601Pavlidou Ekaterin...22201-039 ≣E47It (open)19 Aug 2011