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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
74Lima EdmundoPaiva Omar0-139 ≣E20Ch Brazil
282Brkusanin DBiukovic Goran (CRO)1-027 ≣E20It (open)
608Rudlof JuergenStredak Josef0-136 ≣E20It (open) (b)
12Cruz Walter Oswal...De Souza Mendes J...1-035 ≣E20Ch Brazil (qual)
56Rossetto Hector (...2285Vasconcellos Fern...1-042 ≣E20Zt
167Kristinsson (ISL)Tsagan T (MNG)1-038 ≣E20Olympiad
213Epelman E GProkopp Heinz1-022 ≣E20Europe Tournament...
87Fragoso DarcyVasconcellos Fern...0-158 ≣E20Ch Brazil
772Yezhel ValiantsinMoradi Amir Masoud0-157 ≣E20Ch World (juniors...25 Nov 2007
635Tan Kenneth (SIN)2123Aizuddin Che Hassan1-040 ≣E20It (open)
827Williams Ron (WLS)1944Wills Alex1-033 ≣E20It (open)14 Jul 2009
187Kasanen JuhaSoom1-017 ≣E20Olympiad (student...
420Kozlowski Waldema...2042Bonarek L1-044 ≣E20Ch Poland (corr.)
166Johannessen Svein...2273Filipov F (BUL)1-041 ≣E20Olympiad
180Detthow BoDe Freitas Marcio...0-141 ≣E20Zt
94Geller Efim P (RUS)2455Broadbent Reginal...1-044 ≣E20Match \
126KabanovBoleslavsky Isaak...0-134 ≣E20Ch Belarus
182Camara Helder (BRA)2347De Freitas Marcio...1-042 ≣E20Ch Brazil
203Nevole Vladimir (...2051Slizak1-042 ≣E20?
161Farias Sergio A (...2220Hollmann Jose0-188 ≣E20Ch Brazil
113Alster Ladislav (...Filip F1-046 ≣E20Ch Czechoslovakia...22 Aug 1955
197Litkiewicz Kurt (...2240Maton A1-022 ≣E20Europe Tournament...
258Koskinen Erkki (FIN)1952Virtanen Matti1-044 ≣E20?
11Stolberg Mark (RUS)Lisitsyn Georgy (...0-149 ≣E20Ch URS
147Wotulo Max A (INA)2245Momo Suren (MGL)0-149 ≣E20Olympiad
48Enevoldsen HaraldPoulsen Christian1-030 ≣E20Ch Denmark (play-...
185Lubienski Tadeusz...2033Salminsh Gedimins...0-135 ≣E20Cup Baltic (corr.)
145Toran Albero Roma...2445De Lange Daan1-030 ≣E20Olympiad
160Trapl Jindrich (CZE)2336Tolush Alexander ...1-024 ≣E20Ch Europe (team)
112Szapiro GSolecki Zbigniew1-018 ≣E20Ch Poland
146Toran Albero Roma...2445O'Hare E1-031 ≣E20Olympiad
79Gawlikowski Stani...Gadalinski Jan (POL)0-132 ≣E20Ch Poland27 Oct 1952
47Gruber BratoljubDe Stefani Carlo0-139 ≣E20Match \
240Samani MSharifi Poor M R0-126 ≣E20Ch Iran
367KikrushkinMalikov S0-150 ≣E20Ch Club URS (team...
220Dreesbach HSchafer Rudiger1-038 ≣E20corr.
75Santiago Oliveira...Paiva Omar0-136 ≣E20Ch Brazil
158Iljinsky Yaroslav...2270Rosenfeld Isai K0-166 ≣E20Ch URS (1/2 final)
138Matchett HGTTanfield G1-030 ≣E20Memorial Stevenson
44Mastichiadis FotisEuwe Max (NED)0-134 ≣E20Olympiad
326Gyorkos Lajos (HUN)2395Barati Laszlo1-049 ≣E20Ch Hungary (open)
127Esposito AlfredoPiro A1-035 ≣E20Tournament
62Huguet HGaribaldi Oscar (...1-020 ≣E20Ch Argentina
125Mastichiadis Foti...O'Riordan Kenneth...1-026 ≣E20Olympiad17 Sep 1956
141Lehmann Heinz G (...2285Weise Dietrich1-041 ≣E20Ch BRD
114Rubio Aguado Fern...Reisdoerfer1-030 ≣E20Cup European Club02 Oct 1955
181Piket Joop J (NED)2125Agnes Corrado1-022 ≣E20Ch World (team) (...29 Jul 1964
205Piket Joop J (NED)2125Kunnen1-026 ≣E20Ch Netherlands (t...
424Kaminik Aleksanda...2200Port Hans Juergen1-032 ≣E20Ch Bahn (G)
82Keres Paul (EST)2580Ragozin Viachesla...1-041 ≣E20Tournament
7Klein Ernst LudwigEuwe Max (NED)0-161 ≣E20It
415Loehr GernotWingender Hans Peter1-040 ≣E20Verbandsliga Nort...
15Reshevsky Samuel ...2430Levin Jacob1-039 ≣E20Ch USA
621Castillo Garcia E...1858Beltran Lopez Fer...1-035 ≣E20It (open) (b)
32Geller Efim P (RUS)2455Sokolsky Alexey (...0-172 ≣E20Ch URS
299Quinque KFauth Heinz1-041 ≣E20corr.
191Erozbek Akdogan2200Suwandhio Eddy0-140 ≣E20Olympiad
118Geller Efim P (RUS)2455Djurasevic Bozida...1-042 ≣E20Match \
119KunzDudeck1-040 ≣E20Memorial Dyckhoff...
239Brilla Banfalvi S...Koskinen Unto1-027 ≣E20corr.
263Gotzhein HLauer F0-155 ≣E20corr.
319NicolaiHoekstra W0-140 ≣E20corr.
525Mustonen VesaLehtinen Pentti0-160 ≣E20?
55Esposito AlfredoSouza Mendes Joao1-023 ≣E20Zt
59Geller Efim P (RUS)2455Lipnitsky Isaak (...1-033 ≣E20Ch URS
86Berenzon MauricioMangini Jose Thiago0-136 ≣E20Ch Brazil
76Boleslawski ZbigniewGadalinski Jan (POL)0-151 ≣E20Ch Poland11 Oct 1952
477Kojetsky Pavel (CZE)2114Vasek Dalibor (CZE)1-019 ≣E20Ch Moravia (open)
286SchreiberWicklund Hansen G...1-025 ≣E20corr.
439Ceragioli JohnHimes Harold0-130 ≣E20Ch State California
23Beni Alfred (AUT)2210Mueller Hans0-149 ≣E20It
13Nuernberg FriedrichMuller Hans (AUT)0-134 ≣E20Ch Germany
20Lisitsyn Georgy (...Sokolsky Alexey (...1-031 ≣E20Ch URS (1/2 final)
97Chistiakov Alexan...Lisitsyn Georgy (...1-051 ≣E20Ch URS (team)
111Kwapisz StanislawSolecki Zbigniew0-177 ≣E20Ch Poland
50Szabo Laszlo (HUN)1903Laszlo C (HUN)1-029 ≣E20Ch Hungary
252Wiedenhoft LNeckel O1-055 ≣E20corr.
89Kelly TAnderson Frank R ...0-122 ≣E20Olympiad
218Cafure EmilioCruz Raul0-125 ≣E20It (open)
253Swindell LMartz William R0-142 ≣E20It \
548Chaves Jorge Anto...2110De Souza Marcos1-030 ≣E20Tournament (qual)
748Kocabalkan Tayfun...1653Bapci Hikmet0-125 ≣E20Ch Turkey (1/2 fi...19 Dec 2006
129Shamkovich Leonid...2342Tolush Alexander ...1-050 ≣E20Ch URS (1/2 final)
144GolschmanGonzales Gil J0-133 ≣E20Tournament
176Kekki YrjoKaasalainen Arvo0-139E20?
165Colon H (PUR)Chipev T (BUL)0-140 ≣E20Olympiad
399Blanco Cesar Augu...2105Roldan Manzo Eddy R1-041 ≣E20Ch Guatemala \
419Garcia LealPerello J0-134 ≣E20Ch Europe (corr.)
77Boleslawski ZbigniewGawlikowski Stani...1-051 ≣E20Ch Poland17 Oct 1952
123Mastichiadis Foti...Weichselbaumer Er...0-150 ≣E20Olympiad11 Sep 1956
46Borisenko Georgy ...2354Sokolsky Alexey (...1-057 ≣E20Ch URS
52Kopaev Nikolay An...Bonch-Osmolovsky ...0-146 ≣E20Ch URS (1/2 final)
551Kovacs Lajos (HUN)2138Computer \1-029 ≣E20It (open) \
387McReamonn BDarby C1-034 ≣E20It (open)
35Aratovsky NikolaySokolsky Alexey (...0-145 ≣E20Ch URS (1/2 final)
341Federau Juergen (...2186Matthigak W1-032E20Bundesliga 1987/88
359Horch JMicheel1-032 ≣E20Ch DDR (corr.)
41Van't Veer PBarda Olaf (NOR)0-145 ≣E20Ch World (corr.)
306Veenhuijzen RobertVan Der Linden P ...1-047 ≣E20corr.
69Balanel Ion (ROM)Szabo Stefan1-078E20It