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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
697Kapnisis Spyridon...2511Pavlidou Ekaterin...21911-041 ≣E47Cup Artemis (open)14 Jul 2010
220Dydyshko Viachesl...2512Begun Sergei M (BLR)22951-029 ≣E47?
624Pushkov Nikolai (...2513Kornyukov Alexey ...24161-037 ≣E21Memorial G.I.Ivan...03 Jan 2007
250Lerner Konstantin...2515Zaichik Gennadi (...24571-041 ≣E41Memorial V.Karsel...
701Del Rio Angelis S...2515Sanchez Gonzalez ...22881-046 ≣E47It (open)11 Sep 2010
289Panno Oscar (ARG)2515Hase Juan C (ARG)24151-029 ≣A05It (a)
216Knaak Rainer (GER)2515Garcia Gonzales G...24501-042 ≣E41Memorial J.Capabl...
79Lutikov Anatoly S...2515Aronson Lev (RUS)1-040 ≣E47Ch URS (1/2 final)
569Ramirez Alejandro...2519Hernandez Holden ...24731-039 ≣E46Memorial C.Torre ...
238Knaak Rainer (GER)2520Timoscenko Gennad...24830-134 ≣E47?
178Portisch Lajos (HUN)2523Sarapu Ortvin (NZL)22551-036 ≣E47Izt
150Portisch Lajos (HUN)2523Porath Yosef (ISR)23401-044 ≣E41Olympiad
508Kantsler Boris (ISR)2524Gershon Alik (ISR)25021-030 ≣E47Ch Israel (team)
372Cacho Reigadas Se...2524Corral Blanco Jua...24361-030 ≣E40It (active)
536Johannessen Leif ...2527Moussa Alaa-Eddin...22121-045 ≣E47Olympiad
555Johannessen Leif ...2527Moen Andreas (NOR)22650-134 ≣A15It (cat.6)
542Johannessen Leif ...2527Jenni Florian (SUI)25161-029 ≣A15Bundesliga 2002/03
510Korotylev Alexey ...2528Paramonov Dimitri...23321-032 ≣E47Memorial M.Chigor...
660Vazquez Renier (ESP)2530Vassallo Mauricio...24181-041 ≣E47It (open)24 Aug 2008
420Atalik Suat (BIH)2535Karason Askell O ...22301-036 ≣E47It (open)
601Peralta Fernando ...2538Papp Gabor (HUN)24740-125 ≣E47It (open)24 Oct 2005
425Knaak Rainer (GER)2540Korchnoi Viktor (...26351-023 ≣E47Cup Hofmann
342Balashov Yuri S (...2540Rozentalis Eduard...24901-032 ≣E47Ch URS (1 liga) (...
305Spraggett Kevin (...2540Hartman Brian (CAN)22301-044 ≣A13Ch Canada
483Kveinys Aloyzas (...2545Nikcevic Nebojsa ...24801-035 ≣A13It (open)
587Iljushin Alexei (...2546Wang Hao (CHN)25190-144 ≣E47It (open) \20 Feb 2005
585Lugovoi Aleksei (...2547Naiditsch Arkadij...26411-034 ≣E47It (open) \16 Feb 2005
751Kharitonov Alexan...2547Biriukov Nikolai ...24201-032 ≣E47It (open)18 Jun 2012
102Spassky Boris V (...2548Ghitescu Theodor ...23841-034 ≣E21Ch World (students)
11Furman Semen (RUS)2550Kondratiev Pavel ...1-033 ≣E47Ch URS (1/2 final)
47Furman Semen (RUS)2550Spassky Boris V (...25481-029 ≣E41Ch URS
69Furman Semen (RUS)2550Korelov Alexander...23751-024 ≣E47Ch Leningrad
45Furman Semen (RUS)2550Antoshin Vladimir...22500-146 ≣E41Ch URS
46Furman Semen (RUS)2550Kotov Alexander A...25001-037 ≣E41Ch URS
163Furman Semen (RUS)2550Padevsky Nikola (...23551-042 ≣E41Ch Czechoslovakia...
70Furman Semen (RUS)2550Rovner Dmitry (RUS)1-023 ≣E47Ch Leningrad
716Brodsky Michail (...2553De Verdier Michae...23861-050 ≣E47It (open)01 Mar 2011
434Vaisser Anatoly (...2555Petursson Margeir...25651-026 ≣E47It (open)
466Zilberman Yaacov ...2560Tsesarsky Ilya (ISR)24451-030 ≣E41Tournament
212Reshevsky Samuel ...2560Tan Lian-Ann (SIN)23701-043 ≣E47Izt
373Gulko Boris F (USA)2565Gruenfeld Yehuda ...24801-033 ≣E47It (open)
731Kovalenko Igor (UKR)2567Voronov Yuri (UKR)22811-025 ≣E47It (open)04 Sep 2011
501Babula Vlastimil ...2567Rigo Zsolt (SVK)22221-027 ≣E47Ch Slovakia
756Maiorov Nikita (BLR)2574Darmarakis Mihail...22140-140 ≣E47It (open)08 Jul 2012
503Rogers Ian (AUS)2574Solomon Stephen J...24351-041 ≣E47It (cat.10)
168Mecking Henrique ...2578Alvarez Jose_ (CUB)23681-022 ≣E47Zt
724Kovalenko Igor (UKR)2578Zubarev Alexander...26081-031 ≣E47Memorial A.Ermak ...01 Jul 2011
400Sherbakov Ruslan ...2580Kupreichik Viktor...25351-035 ≣E47It \
227Taimanov Mark E (...2580Zaichik Gennadi (...24571-039 ≣E21Olympiad URS
166Petrosian Tigran ...2580Spassky Boris V (...25481-041 ≣E47Ch World (match)
541Babula Vlastimil ...2581Luther Thomas (GER)25751-033 ≣A40Bundesliga 2001/02
114Polugaevsky Lev A...2585Blatny Frantisek ...21121-046 ≣E41It
619Pelletier Yannick...2588Volokitin Andrei ...26451-030 ≣E47It (cat.17)03 Aug 2006
562Pelletier Yannick...2589Lutz Christopher ...25961-041 ≣E47It (cat.16)
609Berkes Ferenc (HUN)2589Ilincic Zlatko (SRB)24511-035 ≣E47Ch Hungary (team)...12 Feb 2006
626Grigoriants Serge...2591Dgebuadze Alexand...25051-034 ≣E47It (open)09 Mar 2007
476Speelman Jonathan...2600Ellers Holger (GER)24251-040 ≣A05Bundesliga 1998/99
730Peralta Fernando ...2601Pavlidou Ekaterin...22201-039 ≣E47It (open)19 Aug 2011
754Peralta Fernando ...2602Cori T Deysi (PER)23861-031 ≣E47It (open)03 Jul 2012
490Sturua Zurab (GEO)2602Tiviakov Sergei (...26111-045 ≣E47Cup European Club...
725Peralta Fernando ...2602Cruz Jonathan (PER)24121-042 ≣E47It (open)03 Jul 2011
552Shipov Sergei (RUS)2604Bagirov Rufat (AZE)24940-136 ≣E10It (open) \
584Korotylev Alexey ...2604Negi Parimarjan (...23521-039 ≣E47It (cat.7)23 Jan 2005
661Korobov Anton (UKR)2605Wang Hao (CHN)26960-135 ≣E47World Mindsports ...04 Oct 2008
527Graf Alexander (GER)2610Sulskis Sarunas (...25711-031 ≣E47Ch World FIDE (KO...
517Graf Alexander (GER)2610Zeller Frank (GER)24530-139 ≣E40It (open)
521Graf Alexander (GER)2610Kveinys Aloyzas (...25471-030 ≣E47Bundesliga 2000/01
570Kaidanov Gregory ...2611Lerner Konstantin...25041-039 ≣E47It (open) \
642Potkin Vladimir (...2613Kiselev Vitaliy (...25271-035 ≣E47It (open)07 Feb 2008
586Belov Vladimir (RUS)2620Zhao Jun (CHN)25001-029 ≣E47It (open) \19 Feb 2005
446Beliavsky Alexand...2620Lendwai Reinhard ...23701-039 ≣E47It (open)
694Potkin Vladimir (...2630Corrales Fidel (CUB)25991-035 ≣E40Memorial J.Capabl...16 Jun 2010
253Portisch Lajos (HUN)2630Sosonko Gennadi (...25751-038 ≣E41It (cat.14)
530Jussupow Artur (GER)2633Solomunovic Igor ...24211-037 ≣E47It (open)
419Jussupow Artur (GER)2655Beliavsky Alexand...26400-139 ≣E47It
744Timofeev Artyom (...2659Grandelius Nils (...25451-046 ≣E47Ch Europe28 Mar 2012
665Sasikiran Krishna...2669Efimenko Zahar (UKR)26540-141 ≣E47It (cat.16)28 Jan 2009
717Sokolov Ivan (NED)2673Sammalvuo Tapani ...24771-034 ≣E47It (open)13 Mar 2011
749Korobov Anton (UKR)2679Swiercz Dariusz (...25651-045 ≣E47Match \29 May 2012
417Gelfand Boris (ISR)2680Korchnoi Viktor (...26150-137 ≣E41It (cat.16)
719Wojtaszek Radosla...2704Sasikiran Krishna...26890-140 ≣E47It (cat.18)17 May 2011
433Ivanchuk Vassily ...2740Tiviakov Sergei (...26551-036 ≣E47It (cat.17)
698Ponomariov Ruslan...2749Naiditsch Arkadij...26741-046 ≣E47It (cat.20)23 Jul 2010
681Aronian Levon (ARM)2768Naiditsch Arkadij...26971-049 ≣E47Ch World (active)...
708Anand Viswanathan...2800Bacrot Etienne (FRA)27161-033 ≣E47It \30 Oct 2010
534Kramnik Vladimir ...2809Tiviakov Sergei (...25991-038 ≣E47It (cat.19)
129Golemo EKowalczyk R1-036 ≣E47Ch Poland (corr.)
88Angos AlexanderSafvat Y0-121 ≣E10Olympiad
398Hoszowski PiotrNowak Z1-037 ≣E47Ch Poland (corr.)
389Bazan GerardoKanefsck Gustavo ...23731-034 ≣E41It (open)
498Mihelakis GeorgiosGelashvili Tamaz ...25311-019 ≣E47It (open)
497Cody Philip CMurden Clive1-040 ≣E47corr. ICCF
231Koski PekkaRantanen Veikko1-023 ≣E41?
505Computer \Computer \1-045 ≣E47It (computers)
360RimpinevaKivisto Mikko (SIN)22771-026 ≣E41Ch Finland (corr.)
130Oikamo ReijoUitto Matti1-030 ≣E47?
96Prokhorovich Taras ERovner Dmitry Osi...1-048 ≣E47Tournament
492Gislason IngolfurSteindorsson Sigu...20520-135 ≣E47It (open) \
77SehlstedtBlatny Frantisek ...21120-141 ≣E41Olympiad (student...
338Marks IanTenev Teno P0-139 ≣E47Europe Tournament...