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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
367Siciarz JKanonowicz S1-030 ≣E47Ch Poland (corr.)
420Atalik Suat (BIH)2535Karason Askell O ...22301-036 ≣E47It (open)
440Giddins Stephen (...2345Kaspi Alexander (...24700-129 ≣E47Cup European Club
208Steiner Josef (AUT)2116Kauranen Risto0-130 ≣E47It (cat.7)
337Michenka Jozef (CZE)2346Kazek Krzysztof (...20001-026 ≣E41It
58Barda Yngvar (NOR)2280Keller Dieter Ren...23590-128 ≣E41Olympiad (sf)02 Sep 1956
502Elsness Frode (NOR)2395Khenkin Igor (GER)26330-150 ≣E41Cup Rilton
458Kock Hans-Uwe (LIE)2235Kiesslich W1-029E10It (open)
399Liimatta MarttiKirsi Vesa0-130 ≣E46?
642Potkin Vladimir (...2613Kiselev Vitaliy (...25271-035 ≣E47It (open)07 Feb 2008
360RimpinevaKivisto Mikko (SIN)22771-026 ≣E41Ch Finland (corr.)
403Lengyel Ferenc (HUN)2280Kladiva Imre (HUN)20141-026 ≣E41It (open)
235Hesselbarth Karlh...1808Klatt O1-035 ≣E47corr.
487Michenka Jozef (CZE)2315Klima Lukas (CZE)22851-038 ≣E47It
482Romanov Oleg (BLR)2380Klima Lukas (CZE)22851-047 ≣E47It (open)
42Negyesy GyorgyKluger Gyula (HUN)22501-045 ≣A06Ch Hungary
215Donner Jan-Hein (...2495Knaak Rainer (GER)25151-038 ≣E47It \
438Lyrberg Patrik (SWE)2400Koch Thomas (GER)20540-143 ≣E41It (open)
402Stasinos Panayoti...2155Koen Maja (BUL)21050-131 ≣E46It (open)
228Sorsak Jozef Sr (...2125Kolesar Milan (SVK)21750-130 ≣E21It (b)
509Van Beers Eddy (BEL)2346Kolev Atanas (BUL)25820-143 ≣E47Olympiad
709Gonzalez Manchon ...2091Kolev Atanas (BUL)25710-134 ≣E46It (open)04 Dec 2010
491Gual Pascual Anto...2433Kolev Atanas (BUL)25580-141 ≣E47It (open)
554Gutov Andrey (RUS)2366Kolomensky Vladim...23151-047 ≣E41Ch Russia (1/2 fi...
122Borisenko Georgy ...2354Kondratiev1-042 ≣E21It
11Furman Semen (RUS)2550Kondratiev Pavel ...1-033 ≣E47Ch URS (1/2 final)
702Zhukova Natalia (...2499Koneru Humpy (IND)25931-047 ≣D31Ch World (blitz) ...18 Sep 2010
425Knaak Rainer (GER)2540Korchnoi Viktor (...26351-023 ≣E47Cup Hofmann
177Barczay Laszlo (HUN)2381Korchnoi Viktor (...25560-127 ≣E47Izt
417Gelfand Boris (ISR)2680Korchnoi Viktor (...26150-137 ≣E41It (cat.16)
69Furman Semen (RUS)2550Korelov Alexander...23751-024 ≣E47Ch Leningrad
312Hoi Carsten (DEN)2420Kormanyos Zoltan ...23141-034 ≣E41It (open)
624Pushkov Nikolai (...2513Kornyukov Alexey ...24161-037 ≣E21Memorial G.I.Ivan...03 Jan 2007
596Ovod Evgenija (RUS)2366Kosintseva Nadezh...24860-135 ≣E47Ch Europe (w)14 Jun 2005
539Niemela Antti (FIN)2256Koskela Niina (FIN)23101-045 ≣E47Ch Finland (team)...
23Geller Efim P (RUS)2455Kotov Alexander A...25000-142 ≣E41Tournament (candi...
46Furman Semen (RUS)2550Kotov Alexander A...25001-037 ≣E41Ch URS
613Melnichuk Mikhail...2227Kovalenko Igor (UKR)23250-136 ≣D02Ch Ukraine (junio...12 Mar 2006
612Guseva Marina (RUS)2306Kovanova Baira (RUS)23101-035 ≣E47Ch Russia (junior...10 Mar 2006
712Verko Tatiana (KAZ)2104Kovanova Baira (RUS)23691-026 ≣E47It (open) (w)
129Golemo EKowalczyk R1-036 ≣E47Ch Poland (corr.)
128Ciesla SKowalczyk R1-024 ≣E47Ch Poland (corr.)
760Jacso Adam (HUN)2224Kozma Gabor19591-040 ≣E41It (open)19 Aug 2012
75Van Den Berg Care...2410Kramer Haije J (NED)23301-030 ≣E47Ch Netherlands
121Ujtelsky Maximili...2295Kramer Haije J (NED)23301-040 ≣A17Olympiad
589Glavas Dragan (CRO)2333Krkljes Slaven (CRO)21671-039 ≣E41Ch Croatia (team)...20 Mar 2005
445Frolik Martin (CZE)2255Kubala Martin (CZE)22301-042 ≣A40Czech League 1995...
356JerabekKubis0-135 ≣E47Ch Czechoslovakia...
578Vdovichenko Vladi...2219Kucherenko Daniil...23130-135 ≣E46Ch Ukraine (team)20 May 2004
276Beutler MKuhn0-128 ≣E47corr.
19Donner Jan-Hein (...2430Kupper Josef (SUI)23741-035 ≣A40It
400Sherbakov Ruslan ...2580Kupreichik Viktor...25351-035 ≣E47It \
118Lazarev Efim M (UKR)2428Kurass Iskir (UKR)23401-048 ≣E21Ch Ukraine (1/2 f...
714Biriukov Ilja (RUS)2410Kurilin Alexander...22711-032 ≣E47It (cat.6)20 Feb 2011
658Kovalenko Igor (UKR)2453Kurukin Dmitry (RUS)21861-036 ≣E47It (open)12 Aug 2008
632Iotov Valentin (BUL)2509Kuzubov Yuriy (UKR)25821-045 ≣E41It \07 Jun 2007
521Graf Alexander (GER)2610Kveinys Aloyzas (...25471-030 ≣E47Bundesliga 2000/01
537Niklasch Oliver (...2324Kveinys Aloyzas (...25410-132 ≣E47It (open)
436Sjoberg Mats (SWE)2450Kveinys Aloyzas (...25150-136 ≣E47It (open)
323CartensLaarhoven Thijs (...22110-143 ≣E47corr.
304Nieland CLaarhoven Thijs (...22111-039 ≣E47corr.
558Martinez Fernande...2001Lalic Bogdan (ENG)25470-138 ≣D02It (open)
706Bezemer Arno (NED)2318L'Ami Erwin (NED)26240-141 ≣E47It (open)22 Oct 2010
755De Roode Peter (NED)2242L'Ami Erwin (NED)26150-136 ≣E47It (open)07 Jul 2012
233Uimonen Matti (FIN)2098Lampinen Juha1-032 ≣E47?
397Lukacs Peter (HUN)2485Landenbergue Clau...23971-043 ≣A40It \
54Enevoldsen Jens (...2350Larsen Bent (DEN)24150-129 ≣E41It
87Donner Jan-Hein (...2430Larsen Bent (DEN)24150-133 ≣E41Match
53Kozma Julius (CSR)2380Lax Hendrich1-029 ≣E41Ch Czechoslovakia...
194Wildt VolkerLederer G0-120 ≣A40corr.
758Zwirs Nico (NED)2173Leenhouts Koen (NED)23840-134 ≣E11It (open)07 Aug 2012
454Hardicsay Peter (...2395Lendwai Reinhard ...23700-138 ≣E47It (open)
446Beliavsky Alexand...2620Lendwai Reinhard ...23701-039 ≣E47It (open)
471Khasin Abram (RUS)2420Leonidov Vitaly (...23650-142 ≣E41It (seniors)
473Cherepkov Alexand...2395Leonidov Vitaly (...23651-026 ≣E47Memorial V.Zagoro...
688Zilberman Yaacov ...2439Lerner Konstantin...25490-133 ≣E47Memorial L.Slutsk...19 Dec 2009
570Kaidanov Gregory ...2611Lerner Konstantin...25041-039 ≣E47It (open) \
594Brener Ilja (GER)2334Lettieri Giuseppe...22650-150 ≣E40Cup Mitropa25 May 2005
33Uusi Gunnar (EST)2410Levenfish Grigori...1-028 ≣E41Ch Moscow
109Geller Efim P (RUS)2455Levin M1-044 ≣A15Ch Ukraine
381Siciarz JLewandowski K22001-035 ≣E47Ch Poland (corr.)
221Emma Jaime (ARG)2405Link Hugo E (ARG)22751-048 ≣E47Tournament
48Vladimirov Boris ...2340Lisitsyn Georgy (...0-133 ≣E41Ch URS (1/2 final)
384Reading MichaelLittke Adam (CAN)23100-134 ≣E47It (open)
566Bromberger Stefan...2440Loeffler Stefan (...24320-130 ≣E40Bundesliga 2002/03
99Sokolov Vladimir ...2310Lokvenc Josef (AUT)1-032 ≣E47It
108Uhlmann Wolfgang ...2379Lokvenc Josef (AUT)1-040 ≣E47It
73Casas Fernando (ARG)2245Lombardy William ...24351-041 ≣E47It
127Cruz RaulLopez Bahamonde0-133E47Ch Argentina
550Gutierrez Lopez C...2172Lorenzini Martin ...23751-041 ≣E47It (open)
655Perez Inclan Jorg...1626Lorinczi Retek Pe...16861-035 ≣E41It (open)
170McSheehy CJLudgate Alan (IRL)22650-139 ≣E47Ch Great Britain ...
422HolstLundin Alexandr (...23030-125 ≣E47Ch Sweden (team)
506Kunz Konstantin (...2186Luther Thomas (GER)25470-146 ≣E47It (open)
468Pieniazek Artur (...2415Luther Thomas (GER)25250-136 ≣A40It (open) (a)
469Computer \Luther Thomas (GER)25250-146 ≣A40It (cat.7)
541Babula Vlastimil ...2581Luther Thomas (GER)25751-033 ≣A40Bundesliga 2001/02
562Pelletier Yannick...2589Lutz Christopher ...25961-041 ≣E47It (cat.16)
292BarbagalloLyne Colin18700-131 ≣A17corr.
556Jasny Stanislav (...1858Machycek Lubomir ...22711-034 ≣E47It (open)