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Nimzo-Indian, Sämisch Variation, 4.a3 Bxc3+ 5.bxc3 c5 6.e3 Notation: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3

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
146Toran Albero Roma...2445O'Hare E1-031 ≣E20Olympiad
145Toran Albero Roma...2445De Lange Daan1-030 ≣E20Olympiad
141Lehmann Heinz G (...2285Weise Dietrich1-041 ≣E20Ch BRD
138Matchett HGTTanfield G1-030 ≣E20Memorial Stevenson
126KabanovBoleslavsky Isaak...0-134 ≣E20Ch Belarus
125Mastichiadis Foti...O'Riordan Kenneth...1-026 ≣E20Olympiad17 Sep 1956
123Mastichiadis Foti...Weichselbaumer Er...0-150 ≣E20Olympiad11 Sep 1956
470Port Hans JuergenWalther Karl Heinz0-150 ≣E20Ch Bahn (team)
118Geller Efim P (RUS)2455Djurasevic Bozida...1-042 ≣E20Match \
114Rubio Aguado Fern...Reisdoerfer1-030 ≣E20Cup European Club02 Oct 1955
113Alster Ladislav (...Filip F1-046 ≣E20Ch Czechoslovakia...22 Aug 1955
119KunzDudeck1-040 ≣E20Memorial Dyckhoff...
94Geller Efim P (RUS)2455Broadbent Reginal...1-044 ≣E20Match \
89Kelly TAnderson Frank R ...0-122 ≣E20Olympiad
79Gawlikowski Stani...Gadalinski Jan (POL)0-132 ≣E20Ch Poland27 Oct 1952
77Boleslawski ZbigniewGawlikowski Stani...1-051 ≣E20Ch Poland17 Oct 1952
76Boleslawski ZbigniewGadalinski Jan (POL)0-151 ≣E20Ch Poland11 Oct 1952
75Santiago Oliveira...Paiva Omar0-136 ≣E20Ch Brazil
59Geller Efim P (RUS)2455Lipnitsky Isaak (...1-033 ≣E20Ch URS
556Luz SiegfriedWingender Hans Peter0-160 ≣E20Verbandsliga Nort...
55Esposito AlfredoSouza Mendes Joao1-023 ≣E20Zt
52Kopaev Nikolay An...Bonch-Osmolovsky ...0-146 ≣E20Ch URS (1/2 final)
562Legemaat Gert (NED)2216Lambers Gerrit Hans1-026 ≣E20Tournament
48Enevoldsen HaraldPoulsen Christian1-030 ≣E20Ch Denmark (play-...
565Stodolova Kristyn...1980Pecinova Magda1-064 ≣E20Ch Czech Republic...
47Gruber BratoljubDe Stefani Carlo0-139 ≣E20Match \
569Gomez Ruben (ARG)1893Lichtentein Juan1-022 ≣E20It (open)
583Moreno Carlos (PER)1879Paz Jose C1-032 ≣E20Ch Peru (regional)
44Mastichiadis FotisEuwe Max (NED)0-134 ≣E20Olympiad
263Gotzhein HLauer F0-155 ≣E20corr.
600Nikolopoulos Dimi...Roubeglis Nikolaos1-025 ≣E20It (open) \
605Olsson Simon (SWE)2130Nordstrom K1-023 ≣E20It (open)
41Van't Veer PBarda Olaf (NOR)0-145 ≣E20Ch World (corr.)
613Kmit Jozef (SVK)2047Bukovinsky J1-033 ≣E20Ch Slovakia (team...
35Aratovsky NikolaySokolsky Alexey (...0-145 ≣E20Ch URS (1/2 final)
15Reshevsky Samuel ...2430Levin Jacob1-039 ≣E20Ch USA
240Samani MSharifi Poor M R0-126 ≣E20Ch Iran
239Brilla Banfalvi S...Koskinen Unto1-027 ≣E20corr.
7Klein Ernst LudwigEuwe Max (NED)0-161 ≣E20It
62Huguet HGaribaldi Oscar (...1-020 ≣E20Ch Argentina
50Szabo Laszlo (HUN)1903Laszlo C (HUN)1-029 ≣E20Ch Hungary
629Kask OveFritz Manfred0-130 ≣E20Tournament (IECG)
635Tan Kenneth (SIN)2123Aizuddin Che Hassan1-040 ≣E20It (open)
645Sanchez Rodenas A...1769Vayser Vladimir (...0-135 ≣E20Memorial Shumov (...
86Berenzon MauricioMangini Jose Thiago0-136 ≣E20Ch Brazil
477Kojetsky Pavel (CZE)2114Vasek Dalibor (CZE)1-019 ≣E20Ch Moravia (open)
658Moskalenko Viktor...2510Flores Enrique1-022 ≣E20It (open)
415Loehr GernotWingender Hans Peter1-040 ≣E20Verbandsliga Nort...
419Garcia LealPerello J0-134 ≣E20Ch Europe (corr.)
678Pereira Figueroa ...2097Bozzo Rodolfo1-039 ≣E20Dos Hermanas Qual...16 Mar 2003
127Esposito AlfredoPiro A1-035 ≣E20Tournament
112Szapiro GSolecki Zbigniew1-018 ≣E20Ch Poland
286SchreiberWicklund Hansen G...1-025 ≣E20corr.
701Kazakova Anastasi...1938Dokuchaeva Veroni...1-035 ≣E20Ch Privolzhskogo ...
191Erozbek Akdogan2200Suwandhio Eddy0-140 ≣E20Olympiad
748Kocabalkan Tayfun...1653Bapci Hikmet0-125 ≣E20Ch Turkey (1/2 fi...19 Dec 2006
299Quinque KFauth Heinz1-041 ≣E20corr.
439Ceragioli JohnHimes Harold0-130 ≣E20Ch State California
734Pham Nguyen Hoang...Truong Bao Thach ...0-143 ≣E20Ch Vietnam (junio...18 Jul 2006
621Castillo Garcia E...1858Beltran Lopez Fer...1-035 ≣E20It (open) (b)
11Stolberg Mark (RUS)Lisitsyn Georgy (...0-149 ≣E20Ch URS
341Federau Juergen (...2186Matthigak W1-032E20Bundesliga 1987/88
359Horch JMicheel1-032 ≣E20Ch DDR (corr.)
387McReamonn BDarby C1-034 ≣E20It (open)
772Yezhel ValiantsinMoradi Amir Masoud0-157 ≣E20Ch World (juniors...25 Nov 2007
319NicolaiHoekstra W0-140 ≣E20corr.
306Veenhuijzen RobertVan Der Linden P ...1-047 ≣E20corr.
367KikrushkinMalikov S0-150 ≣E20Ch Club URS (team...
782Temirov B (KAZ)2278Dzhangabylov Bakhyt1-045 ≣E20Ch Kazakhstan (ju...27 Mar 2008
791Sidorov Kirill (RUS)1981Lubanski Mark1-027 ≣E20Cup Volga (open)
165Colon H (PUR)Chipev T (BUL)0-140 ≣E20Olympiad
176Kekki YrjoKaasalainen Arvo0-139E20?
144GolschmanGonzales Gil J0-133 ≣E20Tournament
818Zhmailo Yana (RUS)1746Grigorian Alvina ...1-044 ≣E20Ch Russia (junior...20 Apr 2009
129Shamkovich Leonid...2342Tolush Alexander ...1-050 ≣E20Ch URS (1/2 final)
827Williams Ron (WLS)1944Wills Alex1-033 ≣E20It (open)14 Jul 2009
253Swindell LMartz William R0-142 ≣E20It \
252Wiedenhoft LNeckel O1-055 ≣E20corr.