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Nimzo-Indian, 4.e3, Main line 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 dxc4

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
161Bachtiar Arovah (...2285Donner Jan-Hein (...24300-144 ≣E41It \
207Thapper RolandZlebcik L0-149 ≣E47Ch Europe (team) ...
95Evans Larry M (USA)2470Sherwin James T (...22460-142 ≣E41Ch USA
160Bachtiar Arovah (...2285Damjanovic Mato (...23030-140 ≣E47It \
193Schmidt Waldemar ...2029Reimer Karl17040-134 ≣E46corr.
205Corleo MargheritaZlebcik L0-138 ≣E47Ch Europe (team) ...
81Yepez Olavo (ECU)2305Blatny Frantisek ...21120-123 ≣E41Ch World (team) (...
94Ravn PalleCatozzi H0-133 ≣E47Olympiad
146Jenik JHannemann H0-119 ≣E41Europe Tournament...
159Lapienis Donatas ...2282Rusakov Jury (RUS)22470-124 ≣E41Ch Lithuania
176Diez Del Corral J...2415O'kelly De Galway...24600-144 ≣E41It
192Hofmann GeorgeSchmid Hans-Peter...18990-142 ≣E41corr.
199Baart JoanWeyerstrass Ronal...0-148E41Match
204Pulieri PaoloMicka0-132 ≣E47Ch Europe (corr.)
48Vladimirov Boris ...2340Lisitsyn Georgy (...0-133 ≣E41Ch URS (1/2 final)
80Uhlmann Wolfgang ...2379Szabo Laszlo (HUN)19030-131 ≣E47Zt
87Donner Jan-Hein (...2430Larsen Bent (DEN)24150-133 ≣E41Match
92Ojanen Kaarle S (...2335Euwe Max (NED)0-131 ≣E41Olympiad
124Varnusz Egon (HUN)2345Flesch Janos0-142 ≣E46Ch Hungary
145Morgulov Alexsand...2335Sardarov Edward (...22060-131 ≣E41Ch Azerbaijan
152Garcia Horacio2200Polo Gomez Vicent...22120-134 ≣E41Ch Buenos Aires
156Harjunpaa VeikkoTschernauskas0-134 ≣E41Cup Baltic (corr.)
170McSheehy CJLudgate Alan (IRL)22650-139 ≣E47Ch Great Britain ...
173Lukic ArsenijeDamjanovic Mato (...23030-134 ≣E21It
181Cherepkov Alexand...2395Tseshkovsky Vital...24720-141 ≣E41Ch URS
191Colon Romero MiguelO'kelly De Galway...24600-136 ≣E47It
196Karjarinta TapaniNurmi Toivo0-128 ≣E41?
198Bjerre Troels (DEN)2320Hamann Svend (DEN)24900-130 ≣E40Tournament
83Kluger Gyula (HUN)2250Ivkov Borislav (SRB)24160-130 ≣E47Match \
203Corleo GSchaetzel F0-124 ≣E47Ch Europe (corr.)
43Idigoras GregorioNajdorf Miguel (POL)24450-139 ≣E41Ch Argentina
45Furman Semen (RUS)2550Antoshin Vladimir...22500-146 ≣E41Ch URS
56Wexler FranciscoNajdorf Miguel (POL)24450-143 ≣A17It
76Dittmann SieghardOlafsson Fridrik ...24340-140 ≣E41Olympiad (student...
86Polo Gomez Vicent...2212Shocron Ruben (USA)22590-142 ≣A17?
82Dzieciolowski AdamWiniwarter Felix ...21760-133 ≣E41Memorial Przepiorka
90Johannsson Ingi R...2410Anderson Frank R ...0-127 ≣A17Olympiad
9Germek MilanO'kelly De Galway...24600-134 ≣E41It
115Donner Jan-Hein (...2430Matanovic Aleksan...24900-137 ≣E41It
120Thorbergsson Frey...2340Humerez C0-132 ≣E41Olympiad
138Omari FatosSafvat Younnus0-142 ≣E41Olympiad
140Herren WalterBernhardt Rolf (GER)22880-140 ≣E41It
147Krutiansky Anatoly AZhdanov Igor0-127 ≣E41Ch Latvia
151Farago Ivan (HUN)2488Dely Peter (HUN)23910-124 ≣E47Ch Hungary
395Muir Andrew J (SCO)2360Prandstetter Edua...23750-149E47Cup European Club
154Binkauskas BSalminsh Gedimins...0-139 ≣E47Cup Baltic (corr.)
167Luckis Marcos2270Alvarez Jose_ (CUB)23680-126 ≣E47Zt
36Simagin Vladimir ...Gipslis Aivars (LAT)24290-143 ≣A17Ch URS (team)
6Nikolac Juraj (CRO)2438Matanovic Aleksan...24900-128 ≣E41Ch Yugoslavia
17Najdorf Miguel (POL)2445Reshevsky Samuel ...24300-135 ≣E41Match
177Barczay Laszlo (HUN)2381Korchnoi Viktor (...25560-127 ≣E47Izt
180ZverevicMarkovic Igor (CRO)22070-140 ≣E41Tournament (corr.)
187Teschner Rudolf (...2295Rossolimo Nichola...24500-140 ≣E47It
44Idigoras GregorioSanguinetti J0-145 ≣E41Ch Argentina
58Barda Yngvar (NOR)2280Keller Dieter Ren...23590-128 ≣E41Olympiad (sf)02 Sep 1956
194Wildt VolkerLederer G0-120 ≣A40corr.
68Golz Werner (GER)2410Rellstab Ludwig S...22650-124 ≣E40It
197Ivanchenko Sergey...2054Rovner Dmitry (RUS)0-138 ≣E41?
88Angos AlexanderSafvat Y0-121 ≣E10Olympiad
40Schweber Samuel (...2348Spassky Boris V (...25480-135 ≣E41Ch World (juniors...
200Cardoso Carlos Al...2207Sharif Mehrshad (...23300-141 ≣E41Olympiad
77SehlstedtBlatny Frantisek ...21120-141 ≣E41Olympiad (student...
186Bronstein Luis (ARG)2349Schweber Samuel (...23480-138 ≣E41It
610Muir Andrew J (SCO)2341Bellia Fabrizio (...23950-136 ≣E47It (cat.7)17 Feb 2006
362Garralda AGarcia Trobat Fra...22910-133E41It (open)
651Maurer Fritz (SUI)2080Grabher Heinz (AUT)22260-130 ≣E47It (open)26 Apr 2008
396Yepez Olavo (ECU)2305Narciso Dublan Ma...23000-123 ≣E40It (open)
442Karp Serge (LUX)2095Pytel Krzysztof (...24250-122 ≣E10It (open)
59Ciocaltea Viktor ...2420Safvat Yousof (IRN)0-146 ≣E41Olympiad (sf)06 Sep 1956
67Gligoric Svetozar...2447Stenborg Ake (SWE)22800-148 ≣E41Zt
276Beutler MKuhn0-128 ≣E47corr.
676Miranda Yerisbel ...2194Garcia Pantoja Ro...23760-134 ≣E41Memorial J.Capabl...11 Jun 2009
54Enevoldsen Jens (...2350Larsen Bent (DEN)24150-129 ≣E41It
16Idigoras GregorioMarini Luis0-143 ≣E41Ch Argentina
4Martin Pedro (ARG)2021Bolbochan Julio (...24400-132 ≣E47Zt
667Yurkov Alexey (UKR)2163Mazurchak Bogdan ...21870-139 ≣E47Ch Ukraine (junio...14 Feb 2009
7Vukovic Sava (YUG)Rabar Braslav (YUG)0-123 ≣E41Ch Yugoslavia
8Vukovic Sava (YUG)Rabar Braslav (YUG)0-123 ≣E41Ch Yugoslavia
38Fuderer Andrija (...Rabar Braslav (YUG)0-139 ≣E47Ch Yugoslavia (ma...
113Minev Nikolay N (...2370Blatny Frantisek ...21120-137 ≣E41It
668Maia Marco Aureli...2136Guimaraes Wagner ...22910-130 ≣E47It (cat.2)16 Feb 2009
119Borja MEuwe Max (NED)0-134 ≣E41Olympiad
127Cruz RaulLopez Bahamonde0-133E47Ch Argentina
131Hybl Jaroslav (CZE)2172Blatny Frantisek ...21120-133 ≣E47Ch Czechoslovakia
139Noi (LUX)Safvat J (IRI)0-120 ≣A06Olympiad
21Vaitonis Paul (LTH)Anderson Frank R ...0-138 ≣E46Ch Canada
60Uhlmann Wolfgang ...2434Olafsson Fridrik ...24340-130 ≣A17Olympiad10 Sep 1956
23Geller Efim P (RUS)2455Kotov Alexander A...25000-142 ≣E41Tournament (candi...
25Taimanov Mark E (...2386Euwe Max (NED)0-141 ≣E41Tournament (candi...
326Frieser Klaus (GER)2151Prizant Michael (...21360-138 ≣E41Europe Tournament...
29Rabar Braslav (YUG)Janosevic Dragolj...23300-147 ≣E41It
31PasmanTal Mikhail N (LAT)25200-133 ≣E47Ch Latvia
213Bergdahl AssarNordstrom Felix (...21810-140 ≣E41corr.
153Emma Jaime (ARG)2395Polo Gomez Vicent...22120-144 ≣E41Ch Buenos Aires (...
34Burger Karl (USA)2310Evans Larry M (USA)24700-122 ≣E47Ch USA
279Easton Alex (SCO)2147Miles Jana0-135 ≣E47It (open)
37Milic Borislav (YUG)Matanovic Aleksan...24900-140 ≣E41Match
39Jorgensen Vagn RauheSpassky Boris V (...25480-133 ≣E41Ch World (juniors...
41Somers StafJorgensen Vagn Rauhe0-139 ≣E41Ch World (juniors...
208Steiner Josef (AUT)2116Kauranen Risto0-130 ≣E47It (cat.7)