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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
101Weiss-Nowack Chri...2245Balashov Yuri S (...25400-149 ≣E47?
39Portisch Lajos (HUN)2523Rubinetti Jorge (...23821-039 ≣E47Izt
86Ricardi Pablo (ARG)2495Smith J R (WLS)21651-041 ≣E47Ch World (team) (...
236Vitik Vjacheslav ...2181Vlasov Egor (RUS)22641-034 ≣A05Ch Russia (junior...
295Batchuluun Cegmed...2404Dineley Richard (...22661-039 ≣E47Olympiad
229Dunne Alex (USA)2261Hoekstra Matthew ...21621-031 ≣E10It \
175Ravi Lanka (IND)2400Ooi Chern Ee (MAS)22251-044A46Match \
203Garza Marco Sergi...2255Solana Suarez Ern...22850-135 ≣E47Ch Spain (team)
158Stromer Alexander...2290Eis Helko (GER)21611-034 ≣E46Bundesliga (2nd) ...
125Kolchakova Jeni (...1993Koen Maja (BUL)21050-132 ≣A13Ch Bulgaria (team...
193Laske Matthias (GER)2209Boetzer Detlef (GER)22861-046 ≣A40Oberliga Northeas...
222Nesic Nebojsa (SRB)2234Klimis Laertis (GRE)20521-031 ≣E47It (open)
190Milanovic Danilo ...2420Maric Dragan (SRB)23051-030 ≣E47It \
137Hladnik A2150Krumpak Hinko (SLO)20900-150 ≣E41Ch Slovenia (1 liga)
262Mancini Mario (FRA)2260Bogdanov Emil (FRA)22341-033 ≣E47Ch France (team) ...
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) ...
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)...
198Alonso Luis (CUB)2054Huerta Ramon (CUB)22700-137 ≣D38Memorial C.Torre
153Ghafari RaymondJohansson Christi...21361-033 ≣E47Ch Sweden (corr.)
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...
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)
92Groszpeter Attila...2521Barczay Laszlo (HUN)23750-145 ≣E41?
10Pfeiffer Gerhard ...Haygarth Michael ...23750-149 ≣E47Cup Clare Benedict
20Taimanov Mark E (...2386Averbakh Yuri L (...24451-044 ≣E47Ch URS (team)
44Donner Jan-Hein (...2470Langeweg Kick (NED)24250-142 ≣E47It (cat.10)
19Korelov Alexander...2375Zlotnik Boris A (...24331-035 ≣E21Ch URS (team)
59Puronaho AarnoRomppanen Tuomo0-132 ≣E41?
100Balashov Yuri S (...2540Dizdar Goran (CRO)25001-028 ≣A40?
21Kurass Iskir (UKR)2340Sakharov Yuri N (...24750-136 ≣A17Ch \
79ThunbergFiensch Gunter0-139 ≣E47corr.
33Gligoric Svetozar...2447Korchnoi Viktor (...25560-139 ≣E47It
69Formanek Edward W...2400Enklaar Bertus F ...23950-141 ≣E46It (b)
36Vaganian Rafael A...2577Sakharov Yuri N (...24751-032 ≣E41Ch URS (1/2 final)
57Fraguela Gil Jose...2380Byrne Robert E (USA)25400-125 ≣E47?
14Gligoric Svetozar...2447Vukovic Milosav (...22901-028 ≣E21Ch Yugoslavia
240Luehrig WalterMarcotulli Giancarlo1-012 ≣E47Tournament (IECG)
4Aronson Lev (RUS)Roizman Abram (BLR)1-030 ≣E47Ch Belarus
1Geller Efim P (RUS)2455Petrosian Tigran ...25801-046 ≣E40
2Jezek Jaroslav (CZE)2235Ragozin Viachesla...1-046 ≣E41It
3Rellstab Ludwig S...2265Scheipl Ralf (GER)22831-036 ≣E41Ch BRD
5Bannik Anatoly (GER)2175Blagidze Alexander1-049 ≣E47Ch URS (1/2 final)
6BenitesPadevsky Nikola (...23550-146 ≣E47Ch World (team) (...
7Spassky Boris V (...2548Bobotsov Milko G ...24051-027 ≣E41Match \
8Gromek JozefFilipowicz Andrze...23301-041 ≣E41Ch Poland
9Tolush Alexander ...Arulaid Alexander...0-132 ≣E41Olympiad URS
11Gligoric Svetozar...2447Burger Karl (USA)23101-039 ≣E47It
12Galeb Antoine2200O'Hare E0-131E21Olympiad
13Salas Romo Julio ...Troianescu Octav ...23301-041 ≣E41Olympiad
16Roizman Abram Y (...2315Anokhin Yuri1-033 ≣A17Ch URS (1/2 final)
17Lapienis Donatas ...2282Dzhanoev David0-141 ≣E41Ch Baltic Republics
18Bruemmer UllrichWeber Bernd1-029 ≣A17Ch DDR
22Cherepkov Alexand...2395Reshko Aron G (RUS)0-133 ≣E47Ch Leningrad
23Hybl Jaroslav (CZE)2172Pachman Ludek (GER)22780-123 ≣E47Ch Czechoslovakia
24Van Den Berg Care...2410Parma Bruno (SLO)24800-133 ≣E41It \
26Bondarevsky Igor ...Lein Anatoly (USA)22610-141 ≣E41Memorial M.Chigorin
27Akvist Hakan (SWE)2130Gonzalez Yuri (CUB)25560-140 ≣A17Ch Sweden
28Geller Efim P (RUS)2455Nikitin Aleksande...24301-031 ≣A17It \
29Mileika YaNikitin Aleksande...24300-137 ≣E47Ch URS (team)
30Osnos Viatcheslav...2384Sakharov Yuri N (...24751-027 ≣A17Ch URS
31Tiemeyer HMendel G1-031 ≣E41corr.
32Byrne Robert E (USA)2434Villarroel Geber ...22901-036 ≣E21Olympiad
34Dmitriev Igor (RUS)2392Hesse Gunter0-127 ≣E21?
35Grigorian Karen (...2430Osnos Viatcheslav...23841-034 ≣E47Ch URS (1/2 final)
37Pomar Salamanca A...2345Keller Dieter (SUI)23591-034 ≣E41Cup Clare Benedict
38Peltonen UskoHesse Gunter1-035 ≣E47?
40Wirthensohn Heinz...2359Schauwecker Meinr...22511-023 ≣E40It (juniors) (und...
41Donner Jan-Hein (...2500Troianescu Octav ...23300-139 ≣E41Memorial J.Capabl...
42Donchenko Oleg I ...2309Krogius Nikolai V...25750-139 ≣E47Ch URS (1/2 final)
43Cherepkov Alexand...2400Osnos Viatcheslav...25400-138 ≣E47?
45Korelov Alexander...2375Roizman Abram Y (...23150-142 ≣E41Memorial A.Sokolsky
46Valve PekkaTiihonen Erkki1-040 ≣E47?
47Stolle EFechner Jurgen1-033 ≣E47corr.
48Negyesy GyorgyFagerstrom R1-023 ≣E41corr.
49Borisenko Georgy ...2354Sturua Zurab (GEO)25241-042 ≣E21Ch URS (qual)
50Stortelder LMuysson F1-022 ≣A05corr.
51Balashov Yuri S (...2540Gulko Boris F (USA)24801-040 ≣A40Zt (play-off)
53Unzicker Wolfgang...2535Keller Dieter (SUI)23591-038 ≣A05Ch Switzerland
54Lim Seng-Hoo (SIN)2440Tisdall Jonathan ...23900-127 ≣E47?
55Bykov Valery (RUS)2301Reshko Aron G (RUS)0-134 ≣E40Ch Leningrad
56Knaak Rainer (GER)2520Averbakh Yuri L (...25300-144 ≣E47?
60Hort Vlastimil (GER)2620Blackstock Lesly ...24101-035 ≣E47Cup Lord John
63Portisch Lajos (HUN)2630Hort Vlastimil (GER)26201-026 ≣E47It (cat.12)
64Toth Bela (ITA)2345Tatai Stefano (ITA)24550-134 ≣E47Zt
65Vaisser Anatoly (...2536Zilberstein Valer...22510-150 ≣E47Spartakiada URS
66Lerch RRoisman Mario (ISR)21300-135 ≣E47Europe Tournament...
68Aijala JormaNiklasson Christe...23850-133 ≣E47Ch Nordic
70Shashin Alexsande...2350Osnos Viatcheslav...23841-041 ≣E47?
71Scheeren Peter (NED)2415Karsa Laszlo (HUN)23460-136 ≣E47It (open)
72Vehreschild HHess1-038 ≣E47corr.
73Berndt Klaus (GER)2164Neubert Gerhard (...19900-140 ≣E41corr.
74Kuehne RAuerswald U1-030 ≣E41corr.
75Poppe GaetanMay Hans Werner1-020E21corr.