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Nimzo-Indian, Sämisch Variation, Main line 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 0-0 6. e3 c5 7. Bd3 Nc6

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
54ZubietaHaygarth Michael ...23750-141 ≣E47Olympiad
450Zhou Qiyu1726Furtado Ivana Maria20921-034 ≣E20Ch World (juniors...19 Nov 2011
439Zhelev EmilKostov Nikolay (BUL)20050-134E20Memorial Baharov ...28 Nov 2010
159Zbikowski Wolfgan...2205Alexandria Nana (...23421-036 ≣E41Izt (w)
326Zaiatz Elena (RUS)2400Kovalevskaya Ekat...24711-035 ≣E47Ch Russia (w)04 Jul 2004
315Zaiatz Elena (RUS)2400Khurtsidze Nino (...23990-150 ≣E47Ch Europe (w)
237Zaiatz Elena (RUS)2240Stubenrauch Steve...21051-028 ≣E41It (open)
207Zaiatz Elena (RUS)2441Kayumov Dmitry D ...24411-038 ≣E41Memorial A.Zaitsev
222Yurtaev Leonid (KGZ)2505Tunik Gennady (RUS)25151-034 ≣E20Memorial A.Zaitsev
83Yepez Trotzky (ECU)2180Moraza Manuel (PUR)21870-143 ≣E41Ch Pan-American
381Yelmarova Natavan...1854Steil-Antoni Fion...21040-137 ≣E20Ch Europe (junior...14 Sep 2007
208Wright Neil (AUS)2183Pearce Nathan1-021 ≣E20Ch Australia (jun...20 Jan 1994
241Wohlers-Armas Fri...2205Ikonnikov Vyaches...25500-132 ≣E20It (open)
256Winiwarter Felix ...2225Dorawa Bernhard (...19821-040 ≣E41Ch World (seniors)
127WilliamsAnderton David W ...22210-136 ≣E41corr.
99WikmanBagnoli Paolo1-026 ≣E47Olympiad (corr.)
163Whitt PEllis1-022 ≣E47corr.
355Weser Adam (USA)2100Friedman Josef (USA)22010-136 ≣E20It \01 Jul 2006
49Weise DietrichNiephaus Walter (...1-028 ≣E46Ch BRD
63Wehnert LutzBruemmer Ullrich1-041 ≣E20Ch DDR
126Way J2300Nielsen Henning (...21130-137 ≣E46It (open) \
456Wang Doudou (CHN)2186Kojima Shinya (JPN)22640-144 ≣E20It \19 May 2012
169Walton Jonathan S...2225Kiss Attila (HUN)23581-038 ≣E41It (open)
192Vretos VRytshagov Mikhail...24600-119 ≣E20It (open)
374Voigt Detlev (GER)1914Ma Beini (GER)19530-116 ≣E20Ch Hamburg-Harbur...06 Jul 2007
24Voiculescu Paul (...2282Kholmov Ratmir D ...24320-131 ≣E46It
133Vogel Robert (GER)2256Siegel Georg (GER)22731-025 ≣E20Bundesliga 1987/88
93Vinke Dietmar (FIN)2218Busch Raimund (GER)23200-144 ≣E20Ch OWL
213Vigh Bela (HUN)2355Palkovi Jozsef (HUN)24700-125 ≣E41Ch Hungary (team)...
353Vennemann Juergen...1883Vogiatzis Joannis...20230-130 ≣E20Ch Mittelfranken ...12 Apr 2006
346Velecky Viktor (CZE)2146Bernard Borek (CZE)22720-129 ≣A17Czech League 2005...16 Oct 2005
130Vehi Bach Victor ...2385Campos Lopez Mari...23460-148 ≣E20?
392Vegh Endre (HUN)2303Lenz Alarich (AUT)22271-016 ≣E20It (cat.1)08 Dec 2007
225Van Nordern HermanKaufmann Michael1-025 ≣E20?
249Valimamade Munir ...Casimiro Eduardo1-049 ≣E20Ch Portugal (team...
362Vaisser Anatoly (...2553Lautier Joel (FRA)26560-149 ≣E46Ch France19 Aug 2006
138Vaisser Anatoly (...2530Timoshenko Georgy...25151-030 ≣E41?
396Uwira Oliver (GER)2302Legde Georg (GER)23470-145 ≣E20Hessenliga 2007/0830 Mar 2008
430Uwira Oliver (GER)2244Kvetny Mark (GER)19841-026 ≣E20Memorial Karl Mal...17 Jul 2010
449Urkedal Frode (NOR)2448Ochsner Bjorn Mol...22581-043 ≣E41Ch Europe (junior...13 Sep 2011
291Unmack Christian ...2085Palo Davor (DEN)24840-128 ≣E20It (open) \
292Unmack Christian ...2085Schmied Andreas (...21281-024 ≣E20It (open) \
259Ulko Jaroslav (RUS)2454Tunik Gennady (RUS)24471-033 ≣E46Cup Russia (open)
58Tschater BZastrow H0-147 ≣E20Ch BRD (corr.)
286Tsadzikidze Natia...2308Charkhalashvili I...23190-141 ≣E47Ch Georgia (junio...
82Toth Bela (ITA)2345Balaskas Panayoti...20901-042 ≣E20Ch World (team) (...15 Aug 1969
57Tolush Alexander ...Kostro Jerzy (POL)23051-030 ≣E20It
183Tisdall Jonathan ...2465Lyrberg Patrik (SWE)24200-132 ≣E41It (open)
106Timman Jan H (NED)2605Polugaevsky Lev A...26200-122 ≣E41It (cat.15)
177Tihonov Jurij (BLR)2448Tzoumbas Anastasi...23410-127 ≣E20Ch Europe (juniors)
311Taylor Timothy (USA)2291Berczes David (HUN)23211-043 ≣E20It (cat.8)
330Taylor Timothy (USA)2291Bagheri Amir (FRA)24960-133 ≣E20It (open) \05 Sep 2004
451Talsma Paul (NED)2246Howell David WL (...26030-130 ≣E20It (open)04 Jan 2012
96Szmacinska Grazyn...2181Jackson Sheila (ENG)21621-038 ≣E47Olympiad
17Szilagyi Gyorgy (...2370Szabo Stefan1-046 ≣E20It
35Szabo Laszlo (HUN)1903Smyslov Vassily (...24940-136 ≣A15Memorial A.Alekhine
47Szabo Laszlo (HUN)1903Portisch Lajos (HUN)25230-141 ≣E41Ch Hungary (match)
13Szabo Laszlo (HUN)1903Horne DM1-030 ≣E47It
413Swaraj Palit (IND)2140Sharma Dinesh K (...23760-121 ≣E20It (open)11 Jan 2009
334Swaraj Palit (IND)2172Prasanna K (IND)20961-034 ≣E20Ch World (juniors...22 Nov 2004
351Stoehrer Philip (...1996Komarov Dimitri (...25400-125 ≣E46It (open)
110Steudtmann Christ...2268Tischbierek Raj (...24500-136 ≣E20Ch DDR
15Steiner Hermann (...Tramoyeres P1-025E20It
14Stahlberg Gideon ...Broadbent Reginal...1-041 ≣E47It
178Srokowski Jarosla...2410Siklosi Zoltan (HUN)23281-035 ≣E46It
149Spycher Bernard2200Klauser Markus (SUI)23710-124 ≣E41Memorial Hans Klee
62Spassky Boris V (...2548Bykov Valery (RUS)23011-040 ≣E20Tournament (team)
196Soman Satchidanan...2320Ravi Thandalam Sh...23850-150 ≣E41Ch India
435Smokina Karolina ...2170Giulian Rosemary ...19901-041 ≣A40Olympiad (w)30 Sep 2010
223Slegl MGrecny K0-130 ≣E46Memorial Olexa (o...
401Simovic Mladen (CRO)1859Milosavljevic Jov...20820-137 ≣E20It (open)01 Aug 2008
171Siebert Lutz (GER)2174Tuerk Philipp (GER)21501-049 ≣A40Ch NRW
137Shereshevski Mikh...2475Piesina Gintautas...23901-047 ≣E41Ch URS (1/2 final)
87Shereshevski Mikh...2475Yuferov Sergey N ...24121-047 ≣E46Memorial A.Sokolsky
407Shengelia Davit (...2547Jaracz Pawel (POL)25131-035 ≣E47Bundesliga 2008/0929 Nov 2008
341Sharavdorj Dashze...2453Rensch Daniel (USA)23611-027 ≣E41It \12 Jun 2005
419Serna Lara Sergio...2234Suba Mihai (ROM)25400-128 ≣E47It (open)03 Sep 2009
109Schreiber Hans (GER)1981Roisin L0-121 ≣E20Europe Tournament...
88Scholze JReschke Heinz0-130 ≣E47corr.
5Schmidt Paul F (EST)Bogoljubow Efim D...0-131 ≣E47It
288Scharping Hans-Ma...2125Schenk Andreas (GER)24780-147 ≣A40It (open) \
317Schaffer Hendrik ...2222Seifert Volker (GER)23291-037 ≣A40Ch Germany (junio...
442Santos Marcus Vin...2341Leitao Rafael (BRA)26220-117 ≣E20Memorial Antonio ...15 Jan 2011
350Santos Marcus Vin...2353Mekhitarian Kriko...22801-046 ≣E46Ch Brazil20 Dec 2005
343Santos Marcus Vin...2353Lopez Gonzalez Da...22451-041 ≣E41It (cat.3)09 Jul 2005
160Santos Carlos P (...2404Prakash G B (IND)23320-138 ≣E20Ch World (juniors...
302Santana Orlando (...2172Leitao Rafael (BRA)25260-119 ≣E20Cup Itau (open)
257Salimaki Janne (FIN)2215Haapasalo Jukka-P...22450-135E41Ch Helsinki
391Sahelices Casado ...2117Lopez Gonzalez Da...21760-137 ≣A13It (open) (under ...04 Dec 2007
200Ryskin Alexander ...2515Luther Thomas (GER)25101-044 ≣A40Memorial I.Bolesl...
40Rubio Aguado Fern...Letelier Rene (CHI)21510-141 ≣E20Zt
39Rubio Aguado Fern...Cuellar Gacharna ...22800-132 ≣E20It
312Roubalik Vlastimi...2089Ginzburg Mikhail ...23460-123 ≣E20Memorial O.Duras ...
51Rotstein Efim (GER)2341Lazarev Efim M (UKR)24280-132 ≣E47Ch Ukraine
235Rost Van Tonninge...2280Weigel Herbert (GER)21181-044 ≣E20Ch Germany (senio...
418Rosmuller Anton (...2112Vovk Yuri (UKR)25670-124 ≣E47It (open)03 Aug 2009
66Romani Elio (ITA)2275Greiveldinger E0-138 ≣E20Olympiad
142Rokitta NSonntag Hans-Hube...23850-140 ≣E46It (open) \
327Rodriguez Cordon ...2280Furio Zapata Robe...18261-018 ≣E20It11 Jul 2004
383Rodrigo Edson (BRA)1962Gazel Cohen Perei...22500-139 ≣E47Ch Paulista12 Oct 2007