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Nimzo-Indian, Sämisch Variation, Keres Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5

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
431Aaltio Erkki (FIN)2133Sammalvuo Tapani ...23930-127 ≣E20It (open)
380Aaltio Erkki (FIN)2133Kytoniemi Jyrki (...22100-139 ≣E20?
761Aaltio Erkki (FIN)2133Peltomaa Jukka (FIN)19511-028 ≣E20Ch Finland (team)...15 Oct 2011
410Aaltio Erkki (FIN)2133Raaste Eero J (FIN)23350-134 ≣E20Ch Finland (team)...
455Aaltio Erkki (FIN)2133Veingold Aleksand...24570-129 ≣E20It (open)
55Aaron Manuel (IND)2315Teschner Rudolf (...22950-137 ≣E20Izt
693Abdalla Luiz Guil...2294Mareco Sandro (ARG)25600-133 ≣E20It (open)03 Apr 2010
754Abdalla Luiz Guil...2241Guimaraes Artemis...20161-044 ≣E20Tournament (open)
634Abdalla Luiz Guil...2072Quintiliano Renato0-141 ≣E20Tournament (open)20 Jul 2008
643Abergel Thal (FRA)2509Sulskis Sarunas (...25720-138 ≣E20Ch European Union17 Sep 2008
384Abromaitis Marius...2059Macionis Andrius ...23330-143 ≣E20It (open)
382Adianto Utut (INA)2605Liu Dede (INA)24051-047 ≣E20It (cat.13)
452Adler Bo (SWE)2245Couso Luis (SWE)23270-138 ≣E20Ch Sweden (team) ...
618Adler Bo (SWE)2208Kulaots Kaido (EST)25470-127 ≣E20Cup Rilton30 Dec 2007
597Adler Bo (SWE)2185Berczes David (HUN)24150-135 ≣E20Cup Rilton28 Dec 2006
246Agdestein Espen (...2374Chavannes Ivar (NOR)21481-040 ≣E20Ch Norway (team)
92Ageichenko Genadi...2343Smyslov Vassily (...24940-132 ≣E20Tournament
739Aghasaryan Robert...2337Babujian Levon (ARM)24681-050 ≣E20Memorial Karen As...19 Jun 2011
797Aghasaryan Robert...2339Torosyan Norayr (...21371-037 ≣E20Memorial K.Asrian...23 Jun 2012
711Aguiar Lucas (BRA)2070Coelho Luis (BRA)23810-141 ≣E20It (open)25 Sep 2010
795Akshat Khamparia ...2400Melkumyan Hrant (...26420-127 ≣E20It \08 Jun 2012
621Akshat Khamparia ...2337Bakre Tejas (IND)24480-147 ≣E20Ch India04 Feb 2008
652Akshat Khamparia ...2273Sharma Dinesh K (...23761-032 ≣E20It (open)
375Alcala Valiente J...2133Marciano David (FRA)24800-130 ≣E20It (open) (active)
807Aleksandrov Aleks...2602Ibragimov Ildar (...25391-026 ≣E20Cup Russia (open)24 Jul 2012
796Aleksandrov Aleks...2606Kunte Abhijit (IND)25381-035 ≣E20Cup Mayors (open)14 Jun 2012
789Alexanian Nelli (...2114Soyunlu Narmin (AZE)18161-027 ≣A40Ch Europe (w)13 Mar 2012
712Alvarez Johan (VEN)2414Kett T (WLS)22191-041 ≣E20Olympiad25 Sep 2010
720Anand Viswanathan...2817Wang Hao (CHN)27331-033 ≣E20It (cat.20)18 Jan 2011
333Andriana Anca (ROM)2102Peptan Corina-Isa...22550-124 ≣E20Ch Europe (junior...
783Anfinogenov Artem...2109Kostin Konstantin...22890-136 ≣E20Ch Moscow (1/2 fi...28 Feb 2012
779Ansell Alan (NZL)2079Sukandar Irine Kh...23250-132 ≣E20It (open)21 Jan 2012
238Arencibia Walter ...2425Franco Ocampos Ze...24951-030 ≣E20Memorial J.Capabl...
448Arencibia Walter ...2513Del Rio Angelis S...24671-050 ≣A40Memorial G.Garcia...
242Arencibia Walter ...2425Lobron Eric (GER)25451-030 ≣E20Izt
511Arencibia Walter ...2516Wang Hao Yuan (CAN)22691-027 ≣E20It (sheveningen)
179Arencibia Walter ...2335Agdestein Simen (...25451-040 ≣E20Ch World (juniors)
184Armas Jorge (CUB)2381Lebredo Gerardo (...22400-127 ≣E20?
253Arne Mike (USA)2270Osbun Eric1-033 ≣E20Tournament
781Arvola Benjamin (...2261Mastalerz Xavier ...21351-035 ≣A40It (open) \02 Feb 2012
387Asgeirsson Heimir...2185Thorfinnsson Brag...21551-044 ≣E20It (open)
71Asmundsson Ingvar...2292Palmason Gudmundu...22700-128 ≣E20It
638Auckland Elliott ...2017Eggleston David (...23680-128 ≣E20Ch Great Britain04 Aug 2008
554Avila Jimenez Jav...2238Suba Mihai (ROM)25120-139 ≣E20It (open)02 Sep 2005
627Avila Jimenez Jav...2217Cruz Cristhian (PER)25340-128 ≣E20It (open)11 May 2008
420Avrukh Boris (ISR)2588Van Der Sterren P...25351-024 ≣E20It (cat.14)
285Bacrot Etienne (FRA)2705Lecuyer Christian...21820-145 ≣E20It (open)
456Bairachny Ruslan ...2442Shkliar Alexander...22461-027 ≣E20It (open) (a)
469Baklanova Tatiana...2220Bojkovic Natasa (...24520-140 ≣E20Ch Europe (w)
546Baklanova Tatiana...2247Zdebskaja Natalia...23900-126 ≣E20Ch Ukraine (w)24 May 2005
212Ballon Guenther J...2183Pritchett Craig W...23431-042 ≣E20It (open)
624Ballon Guenther J...2198Rozentalis Eduard...25770-132 ≣E20It (open)05 Mar 2008
343Ballon Guenther J...2195Conquest Stuart (...25050-132 ≣E20It (open)
543Ballon Guenther J...2212Solleveld Maarten...24630-137 ≣E20It (open)29 Apr 2005
539Ballon Guenther J...2212Ries Berthold (GER)20490-140 ≣E20It (open)08 Mar 2005
245Ballon Guenther J...2183Vyzmanavin Alexey...25400-130 ≣E20It (open)
74Barczay Laszlo (HUN)2381Bokor Istvan (HUN)22261-031 ≣E20Ch Hungary
725Baron Tal (ISR)2505Gerzhoy Leonid (CAN)25031-037 ≣E20It \13 Mar 2011
15Baumbach Friedric...2239Schlieder Rolf0-131 ≣E20It (a)30 Dec 1956
619Beckett Christoph...2096Parker Robert (ENG)20921-031 ≣E20Ch England (team)...13 Jan 2008
411Behrhorst Frank (...2290Mossakowski Flori...22150-126 ≣E20Memorial Arnold J...
244Beliavsky Alexand...2605Hjartarson Johann...25051-023 ≣E20Cup World (qual)
230Beliavsky Alexand...2605Portisch Lajos (HUN)25901-040 ≣E20It \
143Belistri Ubaldo (...2051Dienavorian Manue...22801-048 ≣E20Ch Uruguay
85Bellin Jana (ENG)2133Norman Dinah M (ENG)19021-046 ≣A40Olympiad (w)
788Belous Vladimir (...2522Chudinovskikh Ale...22761-033 ≣E20Ch Moscow11 Mar 2012
83Benko Pal C (USA)2408Hudson C1-020 ≣E20Ch USA (team)
13Benko Pal C (USA)2408Dely Peter (HUN)23911-042 ≣E20Memorial Szikra
560Bente Bjoern (GER)2259Stark Thomas (GER)20771-024 ≣E20It (open)05 Oct 2005
561Berkes Ferenc (HUN)2596Romanov Evgeny (RUS)24791-046 ≣E20Ch World (juniors...18 Nov 2005
537Berkes Ferenc (HUN)2596David Alberto (LUX)25951-041 ≣E20It (open) \23 Feb 2005
736Berkes Ferenc (HUN)2706Saric Ante (CRO)24891-039 ≣E20Ch Bosnia & Herze...05 Jun 2011
628Berkes Ferenc (HUN)2645Cvitan Ognjen (CRO)25411-032 ≣E20Ch Bosnia & Herze...04 Jun 2008
14Berliner Hans J (...Anderson Frank R ...0-130 ≣E20It (open)
790Biriukov Ilja (RUS)2409Katkov Sergey (RUS)19841-031 ≣E20It (cat.2)19 Mar 2012
425Biro Peter (HUN)2199Szilagyi Peter (HUN)24120-127 ≣E20Ch Hungary (team)...
664Bitalzadeh Ali (NED)2434Malakhatko Vadim ...25701-038 ≣E20It (open)22 May 2009
687Bitan Banerjee (IND)2341Karthikeyan P (IND)23980-146 ≣E20It \19 Jan 2010
496Bjornes Leif (NOR)1976Hansen Anders (SWE)17230-142 ≣E20It (open) \
476Blanchard Jody (FRA)1440Barre Yann (FRA)19691-034 ≣A40Ch France (team) ...
738Bluebaum Matthias...2388Frank Christian (...20321-039 ≣E20Ch Germany (junio...12 Jun 2011
480Bluvshtein Mark (...2461Roussel-Roozmon T...22511-033 ≣E20It (cat.3)
729Bluvshtein Mark (...2593Barrientos Sergio...25071-044 ≣E20Ch American Conti...19 Apr 2011
629Bluvshtein Mark (...2557Paschall William ...23511-028 ≣E20It (cat.7)10 Jun 2008
730Bocharov Dmitry (...2582Andreikin Dmitry ...27050-142 ≣E20Ch Russia (active)25 Apr 2011
263Bode Ulf (GER)2220Becker Marcel (GER)23530-133 ≣E20Bundesliga 1990/9...
409Bodnar Ovidiu (ROM)2133Zhidkov Valery S ...24000-133 ≣E20It (open) (a)
339Bogdanovich Grigo...2385Pilgaard Kim (DEN)22850-120 ≣E20It (open)
282Bogdanovic Rajko ...2308Farago Ivan (HUN)24880-145 ≣E20It (open)
119Bohm Hans (NED)2317Timman Jan H (NED)24800-140 ≣A17Ch Netherlands
62Bonne Mark (BEL)2250Bernhardt Rolf (GER)22880-140 ≣E20It
159Botterill George ...2360Van Der Vliet Fre...23951-022 ≣E20It \29 Aug 1981
745Bouget Alexandre ...2170Siclet Mathieu (FRA)19171-033 ≣E20It (open)17 Jul 2011
646Bouget Alexandre ...1998Jolly Jean-Franco...23550-119 ≣E20It (open)
61Bowen AWWade Robert G (ENG)21481-032E20Ch Great Britain
391Bozinovic Bogdan ...2280Palac Mladen (CRO)25400-145 ≣E20It (open)
418Bozinovic Bogdan ...2260Matijevic Hrvoje ...22800-132 ≣E20It (open)
737Bozinovic Bogdan ...2207Schmid Jaroslav (...20521-042 ≣E20Ch Europe (for th...10 Jun 2011
11Branicki Ignacy2200Makarczyk Kazimie...1-027 ≣A15Ch Poland
569Braun Arik (GER)2525Atlas Valeri (AUT)24821-039 ≣E20It (cat.12)02 Mar 2006