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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
105Portisch Lajos (HUN)2523Nagy Ervin (HUN)22691-027 ≣E20?
511Arencibia Walter ...2516Wang Hao Yuan (CAN)22691-027 ≣E20It (sheveningen)
27Sanguinetti Raul ...2485Luckis Marcos22701-020 ≣E20It
71Asmundsson Ingvar...2292Palmason Gudmundu...22700-128 ≣E20It
383Volkov Sergey Vik...2485Zangiev Pavel (RUS)22701-036 ≣E20It (open)
622Ionov Sergey (RUS)2543Olafsson Helgi (ISL)22701-032 ≣E20It (open) \22 Feb 2008
315Shirov Alexei (ESP)2710Olafsson Helgi (ISL)22701-023 ≣E20It
207Varga Mariano (ARG)2143Escandell Juan C ...22760-145 ≣E20corr.
788Belous Vladimir (...2522Chudinovskikh Ale...22761-033 ≣E20Ch Moscow11 Mar 2012
572De Val Daniele (ITA)2182Malloni Marcello ...22780-138 ≣E20Ch Italy (team)22 Apr 2006
610Capo Vidal Uriel ...2356Beltran Carlos (COL)22791-042 ≣E20Ch South America19 Jul 2007
44Khodos German (RUS)2200Kuijpers Frans A ...22801-040 ≣E20Olympiad (student...
418Bozinovic Bogdan ...2260Matijevic Hrvoje ...22800-132 ≣E20It (open)
281Rohwer Paul (USA)2225Benjamin Dan (USA)22801-034 ≣E20Ch USA (juniors) ...
143Belistri Ubaldo (...2051Dienavorian Manue...22801-048 ≣E20Ch Uruguay
50Ghitescu Theodor ...2384Soos Bela (GER)22811-036 ≣E20Ch Romania
626Ovod Evgenija (RUS)2429Maksimovic Suzana...22841-029 ≣E20Ch Europe (w)21 Apr 2008
662Savchenko Aleksei...2246Hirneise Jens (GER)22840-132 ≣E20Ch Germany (junio...10 May 2009
763Volkov Sergey Vik...2614Stockmann Michael...22841-038 ≣E20It (open)
370Neuman Petr (CZE)2155Cvek Robert (CZE)22850-133 ≣E20It (open) (juniors)
798Van Vliet Dennis ...2077Furman Boris (RUS)22850-132 ≣E20It (open)24 Jun 2012
339Bogdanovich Grigo...2385Pilgaard Kim (DEN)22850-120 ≣E20It (open)
723Shatko Danil (ESP)2097Ayas Fernandez An...22860-136 ≣E20Ch Catalunia (tea...05 Mar 2011
608Hohluks Aleksandr...2049Vedrickas Tautvyd...22870-126 ≣E20Cup Baltija (open)20 Jun 2007
457Kovacs Tamas (HUN)2210Laihonen Petteri ...22870-134 ≣E20Cup Zemplen02 Jul 2000
62Bonne Mark (BEL)2250Bernhardt Rolf (GER)22880-140 ≣E20It
494Segura Ariza Jose...2181Munoz Agullo Jose...22891-040 ≣E20XVI Obert Es Vermar
783Anfinogenov Artem...2109Kostin Konstantin...22890-136 ≣E20Ch Moscow (1/2 fi...28 Feb 2012
346Yakovich Yuri (RUS)2515Littke Adam (CAN)22900-140 ≣E20It \
256Khenkin Igor (GER)2624Lengyel Levente (...22931-028 ≣E20It \
47Weise DietrichLengyel Levente (...22930-144 ≣E20Ch Europe (team)
53Sliwa Bogdan (POL)2235Lengyel Levente (...22930-141 ≣E20It
26Weinstein Raymond...Denker Arnold S (...22931-041 ≣E20Ch USA
209Giulian Philip M ...2294Thomson Craig S M...22930-127 ≣E20Ch West Scotland
784Liedl Wolfgang (AUT)2224Neumeier Klaus (AUT)22931-040 ≣E20Bundesliga B East...03 Mar 2012
715Cruz Cristhian (PER)2497Nikolashvili Gior...22941-039 ≣E20Ch World (juniors...24 Oct 2010
31Polugaevsky Lev A...2585Teschner Rudolf (...22951-038 ≣E20Match \
20Szabo Laszlo (HUN)1903Teschner Rudolf (...22951-041 ≣E20Zt
55Aaron Manuel (IND)2315Teschner Rudolf (...22950-137 ≣E20Izt
504Marinangeli Marti...2139Arambel Sergio (ARG)22960-142 ≣E20Ch City (match)
505Marinangeli Marti...2139Arambel Sergio (ARG)22961-038 ≣E20Ch City (match)
449Porras RubenVaras Carlos (CHI)22970-19 ≣E20It (open)
82Taimanov Mark E (...2386Hamann Svend (DEN)22981-033 ≣E20It \
80Petersen Sejer Ho...Hamann Svend (DEN)22981-041 ≣E20Ch Denmark
585Terrieux Kevin (FRA)2345Bleunven Andre (FRA)22981-031 ≣E20Ch France (access...24 Aug 2006
292Schipkov Boris (RUS)2330Sziraki Tamas (HUN)22990-132 ≣E20It (open) \
503Likavsky Tomas (SVK)2449Bayer Bernhard (GER)23001-036 ≣E20It (cat.3)
18Korchnoi Viktor (...2556Bykov Valery (RUS)23011-045 ≣E20Ch Leningrad
678Palliser Richard ...2413Pritchett Craig W...23031-037 ≣E20It (active) \21 Nov 2009
748Grower Sahaj (IND)2514Kunal M (IND)23041-043 ≣E20Ch World (juniors...03 Aug 2011
45Sliwa Bogdan (POL)2235Kostro Jerzy (POL)23051-047 ≣E20Ch Poland
534Lettieri Giuseppe...2265Guido Flavio (ITA)23051-034 ≣E20It (open)06 Jan 2005
802Grujic Nebojsa (SRB)2156Skovgaard Peter (...23060-134E20Ch Central Serbia...07 Jul 2012
612Hejl Jaroslav (CZE)2076Vyskocil Neklan (...23081-045 ≣E20It (open)30 Jul 2007
642Meerovich IlanHarper Warren (USA)23091-025 ≣E20US Chess League27 Aug 2008
355Rittler Robert (AUT)2199Janetschek Karl (...23100-131 ≣E20Staatsliga B East...
336Krizsany Laszlo (...2395Apel Stefan (GER)23101-035 ≣E20It (cat.3)
592La-Manna Francesc...2119Vezzosi Paolo (ITA)23111-021 ≣E20It (open)27 Oct 2006
591Loi Andrea (ITA)2069Vezzosi Paolo (ITA)23110-127 ≣E20It (open)22 Oct 2006
435Erdogan Hakan (TUR)2217Olsen Heini (FAI)23130-147 ≣E20Olympiad
444Likavsky Tomas (SVK)2409Bartel Mateusz (POL)23131-021 ≣E20It (open)
786Yudkevich Mikhail...2200Demianjuk Alexand...23131-031 ≣E20Ch Moscow (1/2 fi...05 Mar 2012
38Weise DietrichClemens Christian...23140-148 ≣E20Ch BRD
679Ubiennykh Ekateri...2270Pavlov Oleg (RUS)23141-030 ≣E20Tournament (Elo)
177Brinck-Claussen B...2263Kruszynski Wlodzi...23141-029 ≣E20It (open) \
225Danner Georg (AUT)2408Brglez Rado (SLO)23150-141 ≣E20It (cat.8)
633Wiedermann Daniel...2161Genser Harald (AUT)23151-038 ≣E20Ch Austria19 Jul 2008
153Kataev Simcho (RUS)2246Tavadian Hrachik ...23150-124 ≣E20Olympiad URS
351Hubert Ralf (GER)2293Rechmann Peter (GER)23160-148 ≣E20It (open)
302Matveeva Svetlana...2425Van Gisbergen Sta...23191-033 ≣E20It (open)
192Murshed Niaz (BAN)2475Mithrakanth Poorn...23201-024 ≣E20?
22Karaklajic Nikola...2303Gereben Erno (SUI)23201-044 ≣E20Memorial Stevenson
1Euwe Max (NED)Golombek Harry (ENG)23201-038 ≣E20
140HoewelBusch Raimund (GER)23200-146 ≣E20Ch NRW
780Shyam Sundar M (IND)2462Zemerov Vladimir ...23230-140 ≣E20It (open)01 Feb 2012
498Meynard Thibault ...2242Guadalpi David (FRA)23241-035 ≣E20Ch France (team) ...
524Hillarp Persson T...2523Ong Kezli (SWE)23250-140 ≣E20Ch Sweden20 Jul 2004
779Ansell Alan (NZL)2079Sukandar Irine Kh...23250-132 ≣E20It (open)21 Jan 2012
2Landau Salo (POL)Van Scheltinga Th...23250-137 ≣E20Match
395Shishkin Vladimir...2169Rodriguez Lopez R...23251-040 ≣E20It (b)
232Prudnikova Svetla...2349Misanovic Vesna (...23261-029 ≣E20Izt (w)
452Adler Bo (SWE)2245Couso Luis (SWE)23270-138 ≣E20Ch Sweden (team) ...
286Matveeva Svetlana...2425Bojkovic Natasa (...23300-128 ≣E20It \
384Abromaitis Marius...2059Macionis Andrius ...23330-143 ≣E20It (open)
824Menezes Christoph...2303Rindlisbacher Lar...23340-127 ≣E20It (team) (active) \14 Oct 2012
410Aaltio Erkki (FIN)2133Raaste Eero J (FIN)23350-134 ≣E20Ch Finland (team)...
157Bulthaupt Freerk ...2176Rhodin Bodo (GER)23350-144 ≣E20Bundesliga (2nd) ...
522Khenkin Igor (GER)2587Ayas Fernandez An...23361-046 ≣E20It (open)04 Jul 2004
502Frangez Simon (SLO)2195Bratovic Blaz (SLO)23360-131 ≣E20It (open)
277Loebler Heimo (AUT)2153Chloupek Stanisla...23381-026 ≣E20It (open) (juniors)
202Roschlau BVerat Laurent (FRA)23381-028 ≣E20It (open)
231Sokolov Sergey M ...Aleksandrov Aleks...23401-039 ≣E20Ch URS (qual)
363Kos Sebastian (GER)2208Von Gleich Alexan...23400-126 ≣E20Bundesliga (2nd) ...
280Dao Thien Hai (VIE)2493Tzoumbas Anastasi...23410-129 ≣E20Ch World (juniors)
685Richter Michael (...2459De Verdier Michae...23411-042 ≣E20Cup Rilton (open)04 Jan 2010
217Pieterse Gert (NED)2361Bosman Michiel (NED)23420-146 ≣E20It (open)
212Ballon Guenther J...2183Pritchett Craig W...23431-042 ≣E20It (open)
73Donner Jan-Hein (...2430Bouwmeester Hans ...23431-041 ≣E20It (a)
541Guthrie David (NZL)2184Hinks-Edwards Tho...23430-121 ≣E20It (open)26 Mar 2005
111Diez Del Corral J...2415Belkadi Ridha (TUN)23451-032 ≣E20Olympiad