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Nimzo-Indian, 4.e3, Main line with 8...Bxc3 Notation: 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 Qc7

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
70Shashin Alexsande...2350Osnos Viatcheslav...23841-041 ≣E47?
98Chabot Roland (CAN)2231Glen Graham1-027 ≣E47Ch Canada
30Osnos Viatcheslav...2384Sakharov Yuri N (...24751-027 ≣A17Ch URS
63Portisch Lajos (HUN)2630Hort Vlastimil (GER)26201-026 ≣E47It (cat.12)
91Acosta Tomas (ARG)2275Servat Roberto (ARG)22851-031 ≣E47Ch Argentina
96Semkov Semko (BUL)2450Drasko Milan (MNE)24651-034 ≣E47?
8Gromek JozefFilipowicz Andrze...23301-041 ≣E41Ch Poland
28Geller Efim P (RUS)2455Nikitin Aleksande...24301-031 ≣A17It \
38Peltonen UskoHesse Gunter1-035 ≣E47?
60Hort Vlastimil (GER)2620Blackstock Lesly ...24101-035 ≣E47Cup Lord John
80Juhnke Karl (GER)2178Neunhoeffer Helmu...22791-037 ≣E47Bundesliga 1983/84
89Hort Vlastimil (GER)2545King Daniel J (ENG)24601-049 ≣E21Bundesliga 1985/86
93Hutschenreiter JoergSchuetze1-047 ≣E41corr.
95Marotz HJFischer Franz19901-041 ≣E21corr.
2Jezek Jaroslav (CZE)2235Ragozin Viachesla...1-046 ≣E41It
7Spassky Boris V (...2548Bobotsov Milko G ...24051-027 ≣E41Match \
13Salas Romo Julio ...Troianescu Octav ...23301-041 ≣E41Olympiad
18Bruemmer UllrichWeber Bernd1-029 ≣A17Ch DDR
31Tiemeyer HMendel G1-031 ≣E41corr.
37Pomar Salamanca A...2345Keller Dieter (SUI)23591-034 ≣E41Cup Clare Benedict
47Stolle EFechner Jurgen1-033 ≣E47corr.
53Unzicker Wolfgang...2535Keller Dieter (SUI)23591-038 ≣A05Ch Switzerland
75Poppe GaetanMay Hans Werner1-020E21corr.
25Zheliandinov Vikt...2356Makienko1-023 ≣E47Ch \
84Azmaiparashvili Z...2460Shneider Aleksand...24601-040 ≣A13Ch URS (young mas...
239Knaak Rainer (GER)2494Duppel Matthias (...24461-033 ≣A40Bundesliga 2000/01
359Van Der Stricht G...2392Docx Stefan (BEL)23421-033 ≣E47It \06 Sep 2010
256Klimov Sergey (RUS)2466Lugovoi Aleksei (...25401-033 ≣E47Ch St. Petersburg
97Baragar Fletcher ...2320Ehlvest Jaan (USA)25401-046 ≣E47Izt
94Zugehoer ESchulz Gert (GER)20531-028 ≣E47corr.
1Geller Efim P (RUS)2455Petrosian Tigran ...25801-046 ≣E40
15Radev Nikolai (BUL)2304Popov Luben (BUL)23171-040 ≣E41Ch Bulgaria
3Rellstab Ludwig S...2265Scheipl Ralf (GER)22831-036 ≣E41Ch BRD
5Bannik Anatoly (GER)2175Blagidze Alexander1-049 ≣E47Ch URS (1/2 final)
118Meulders Richard ...2245Renet Olivier (FRA)24861-047 ≣E47Zt
11Gligoric Svetozar...2447Burger Karl (USA)23101-039 ≣E47It
16Roizman Abram Y (...2315Anokhin Yuri1-033 ≣A17Ch URS (1/2 final)
86Ricardi Pablo (ARG)2495Smith J R (WLS)21651-041 ≣E47Ch World (team) (...
58Blackstock Lesly ...2410Ornstein Axel (SWE)24401-035 ≣E21It
295Batchuluun Cegmed...2404Dineley Richard (...22661-039 ≣E47Olympiad
32Byrne Robert E (USA)2434Villarroel Geber ...22901-036 ≣E21Olympiad
35Grigorian Karen (...2430Osnos Viatcheslav...23841-034 ≣E47Ch URS (1/2 final)
40Wirthensohn Heinz...2359Schauwecker Meinr...22511-023 ≣E40It (juniors) (und...
46Valve PekkaTiihonen Erkki1-040 ≣E47?
49Borisenko Georgy ...2354Sturua Zurab (GEO)25241-042 ≣E21Ch URS (qual)
51Balashov Yuri S (...2540Gulko Boris F (USA)24801-040 ≣A40Zt (play-off)
72Vehreschild HHess1-038 ≣E47corr.
74Kuehne RAuerswald U1-030 ≣E41corr.
158Stromer Alexander...2290Eis Helko (GER)21611-034 ≣E46Bundesliga (2nd) ...
321Dilleigh Steve (ENG)2147Berry Stephen (ENG)23161-044 ≣E47Ch Great Britain07 Aug 2008
81Maresca FilippoPellegrini R1-018 ≣E47Ch Italy
303Ipatov Alexander ...2234Dudyev Volodymyr ...20411-044 ≣E47It (open) \29 Aug 2006
193Laske Matthias (GER)2209Boetzer Detlef (GER)22861-046 ≣A40Oberliga Northeas...
313Krstic Petar (SRB)2358Raisanen Kim (FIN)20991-033 ≣E46Ch Europe (junior...23 Sep 2007
222Nesic Nebojsa (SRB)2234Klimis Laertis (GRE)20521-031 ≣E47It (open)
190Milanovic Danilo ...2420Maric Dragan (SRB)23051-030 ≣E47It \
336Nguyen Chi-Minh (...2447Mohota Nisha (IND)23151-037 ≣D31It (open)01 Aug 2009
364Zilka Stepan (CZE)2517Babula Vlastimil ...25721-043 ≣E47Extra League 2010/1109 Jan 2011
262Mancini Mario (FRA)2260Bogdanov Emil (FRA)22341-033 ≣E47Ch France (team) ...
370Wang Hao (CHN)2733Wei Yi (CHN)22991-024 ≣E47Ch China (team)12 Apr 2011
245Fokin Andrey (RYS)Smirnov Artem (RUS)22831-040 ≣E41It (open) \
140Tsemekhman Vadim ...2355Masserey Yvan (SUI)23291-046 ≣E41Ch World (juniors...
252Simonet Marc (AND)2295Leignel Nicolas (...21521-032 ≣E47Ch France (team) ...
117RiemannShanholtzer1-030 ≣E46corr.
194Lapienis Donatas ...2305Scheipl Ralf (GER)22701-041 ≣E41Ch World (seniors)
174Norri Joose (FIN)2385Niemela Antti (FIN)22791-040 ≣E41Ch Helsinki
213Filipovic Marko (...2241Brulic Denis (CRO)21211-031 ≣E41Ch Croatia (team)...
241Pinasco Juan PFrignani Giorgio1-024 ≣E46Tournament (IECG)
153Ghafari RaymondJohansson Christi...21361-033 ≣E47Ch Sweden (corr.)
177Iskusnyh Sergei (...2460Balashov Yuri S (...25301-037 ≣E47It (cat.8)
379Cruz Lledo Pablo ...2334Cerrato Torrijos ...20971-028 ≣A40Ch Spain (juniors...21 Jul 2011
324Franic Milan (CRO)2393Bender Ivan (CRO)23021-047 ≣E47Ch Croatia (team)...01 Sep 2008
39Portisch Lajos (HUN)2523Rubinetti Jorge (...23821-039 ≣E47Izt
180Zhukova Natalia (...2330Maric Mirjana (SRB)23051-041 ≣A46It (w)
215Bengtson Matthew ...2306Hoekstra Matthew ...21551-029 ≣E47It (open)
132Nickl Klaus (AUT)2144Liedl Wolfgang (AUT)22241-048 ≣E47Ch Austria (1/2 f...
378Kanarek Marcel (POL)2444Szabo Bence (HUN)23331-049 ≣E47Ch Europe (team) ...17 Jul 2011
319Sanzhaev Darsen (...2082Kurukin Dmitry (RUS)21861-030 ≣E47It (open)19 Jun 2008
343Lechtynsky Jiri (...2380Weber Bernd Dr (GER)21441-040 ≣A15Ch Europe (senior...16 Feb 2010
236Vitik Vjacheslav ...2181Vlasov Egor (RUS)22641-034 ≣A05Ch Russia (junior...
99Lin Weiguo (CHN)2447Ivanchuk Vassily ...26251-039 ≣E47Ch World (juniors...
52Lombard Andre (SUI)2350Langeweg Kick (NED)24101-032 ≣E47Ch Switzerland
61Brilla Banfalvi S...Napolitano Mario ...1-035 ≣E47Ch Poland (team)
302Zakaria Fairin (MAS)2225Hamid Rani (BAN)21651-020 ≣E47It (open)26 Aug 2006
285Peralta Fernando ...2538Vehi Bach Victor ...24161-027 ≣E47It (open)23 May 2005
20Taimanov Mark E (...2386Averbakh Yuri L (...24451-044 ≣E47Ch URS (team)
229Dunne Alex (USA)2261Hoekstra Matthew ...21621-031 ≣E10It \
19Korelov Alexander...2375Zlotnik Boris A (...24331-035 ≣E21Ch URS (team)
406Peralta Fernando ...2591Solomon Kenny (RSA)24491-032 ≣E47It (open)03 Jun 2012
100Balashov Yuri S (...2540Dizdar Goran (CRO)25001-028 ≣A40?
288Belov Vladimir (RUS)2620Pilgaard Kim (DEN)24231-029 ≣E47Cup North Sea (open)04 Jul 2005
48Negyesy GyorgyFagerstrom R1-023 ≣E41corr.
175Ravi Lanka (IND)2400Ooi Chern Ee (MAS)22251-044A46Match \
50Stortelder LMuysson F1-022 ≣A05corr.
36Vaganian Rafael A...2577Sakharov Yuri N (...24751-032 ≣E41Ch URS (1/2 final)
88Akkil MVella Brian (MLT)22051-025 ≣E10Ch World (juniors...
14Gligoric Svetozar...2447Vukovic Milosav (...22901-028 ≣E21Ch Yugoslavia
240Luehrig WalterMarcotulli Giancarlo1-012 ≣E47Tournament (IECG)
4Aronson Lev (RUS)Roizman Abram (BLR)1-030 ≣E47Ch Belarus
102Tirabassi Maurizi...2306Taksrmo1-041 ≣E47Olympiad (corr.)