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Nimzo-Indian, Sämisch Variation, Keres Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5

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
510Hillarp Persson T...2523Sammalvuo Tapani ...24380-140 ≣E20Ch Sweden (team) ...
518Hillarp Persson T...2523Lehikoinen Pertti...22171-035 ≣E20It (open)07 Mar 2004
524Hillarp Persson T...2523Ong Kezli (SWE)23250-140 ≣E20Ch Sweden20 Jul 2004
105Portisch Lajos (HUN)2523Nagy Ervin (HUN)22691-027 ≣E20?
72Portisch Lajos (HUN)2523Pachman Ludek (GER)22781-023 ≣A17Olympiad
17Portisch Lajos (HUN)2523Bilek Istvan (HUN)23751-032 ≣E20Ch Hungary
568Braun Arik (GER)2525Prusikin Michael ...25600-126 ≣E20It (cat.12)28 Feb 2006
569Braun Arik (GER)2525Atlas Valeri (AUT)24821-039 ≣E20It (cat.12)02 Mar 2006
329Yakovich Yuri (RUS)2525Jussupow Artur (GER)26300-136 ≣E20It (active)
698Malaniuk Vladimir...2527Grabher Heinz (AUT)22461-026 ≣E20It (open)14 May 2010
551Moskalenko Viktor...2529Kosten Anthony C ...25070-142 ≣E20It (open)06 Aug 2005
552Moskalenko Viktor...2529Cuadras Avellana ...23761-025 ≣E20It (open)19 Aug 2005
186Gutman Lev (GER)2530Stranegger Engelbert1-029 ≣E20?
458Suba Mihai (ROM)2535Rodriguez Soler R...19941-041 ≣E20It (open)
709Simantsev Mikhail...2541Milanovic Slavisa...23891-041 ≣A40Ch Serbia (team) ...19 Sep 2010
689Simantsev Mikhail...2541Mischuk Dmitry (UKR)23551-042 ≣E20It (cat.7)
582Moskalenko Viktor...2543Lapshun Yury (USA)24671-021 ≣E20It (open)02 Aug 2006
575Moskalenko Viktor...2543Cruz Filemon (PER)23711-037 ≣E20It (open)
583Moskalenko Viktor...2543Cuadras Avellana ...23751-030 ≣E20It (open)19 Aug 2006
622Ionov Sergey (RUS)2543Olafsson Helgi (ISL)22701-032 ≣E20It (open) \22 Feb 2008
690Ulibin Mikhail (RUS)2544Saric Ante (CRO)24721-039 ≣E20It (open)04 Mar 2010
701Ulibin Mikhail (RUS)2544Bentefrit Samir (...21991-022 ≣E20It (open)26 Jun 2010
189Malaniuk Vladimir...2545Naumkin Igor (RUS)24701-048 ≣E20Memorial G.Agzamov
247Hertneck Gerald (...2547Huebner Robert Dr...25150-131 ≣E20It (active)
787Simantsev Mikhail...2548Naumkin Igor (RUS)24430-141 ≣E20It (open)09 Mar 2012
402Khenkin Igor (GER)2550Naumkin Igor (RUS)24100-141 ≣A40It (open)
439Volkov Sergey Vik...2554Sakaev Konstantin...26271-036 ≣E20Ch World FIDE (KO...
447Volkov Sergey Vik...2554Yevseev Denis (RUS)25161-033 ≣E20Ch Russia
451Volkov Sergey Vik...2554Ulko Jaroslav (RUS)24560-145 ≣E20Memorial M.Chigor...
413Golod Vitali (ISR)2555Solomon Stephen J...24351-040 ≣E20It (open)
262Hertneck Gerald (...2555Ketzscher Roland ...20851-041 ≣E20Bundesliga 1990/91
509Ulibin Mikhail (RUS)2556Barkhagen Jonas (...24610-135 ≣E20Cup Rilton
18Korchnoi Viktor (...2556Bykov Valery (RUS)23011-045 ≣E20Ch Leningrad
525Ulibin Mikhail (RUS)2556Cherniaev Alexand...22650-137 ≣E20It (open)21 Jul 2004
629Bluvshtein Mark (...2557Paschall William ...23511-028 ≣E20It (cat.7)10 Jun 2008
746Moskalenko Viktor...2558Trujillo Villega ...21751-033 ≣E20It (open)22 Jul 2011
276Moskalenko Viktor...2558Lawson O (SCO)1-044 ≣E20It (open)
271Moskalenko Viktor...2558Naumkin Igor (RUS)24901-048 ≣E20It (cat.10)
227Malaniuk Vladimir...2560Komarov Dimitri (...25191-030 ≣E20It (open)
270Yakovich Yuri (RUS)2560Serper Grigory (USA)24901-028 ≣E20Ch URS (swiss)
219Malaniuk Vladimir...2560Tolnai Tibor (HUN)24701-030 ≣E20It
222Malaniuk Vladimir...2560Suba Mihai (ROM)25001-045 ≣E20Cup World (open)
727Spoelman Wouter (...2563Kraemer Martin (GER)24921-029 ≣E20Bundesliga 2010/1120 Mar 2011
602Nyback Tomi (FIN)2565Veingold Aleksand...24581-036 ≣E20Ch Finland (team)...10 Mar 2007
228Hansen Sune Berg ...2566Groenn Atle (NOR)23780-148 ≣E20It (open)
229Hansen Sune Berg ...2566Panzalovic Srdjan...24581-047 ≣E20It (open)
598Hillarp Persson T...2567Berczes David (HUN)24300-139 ≣E20Cup Rilton02 Jan 2007
630Moskalenko Viktor...2568Rojas Luis (CHI)24080-143E20It (open)27 Jun 2008
649Neverov Valeriy (...2571Eggleston David (...23681-041 ≣E20It (masters)29 Dec 2008
421Volkov Sergey Vik...2575Macieja Bartlomie...25421-033 ≣E20Ch Europe (team)
716Jones Gawain C (ENG)2576Fedorchuk Sergey ...26711-033 ≣E20It \26 Oct 2010
272Golod Vitali (ISR)2579Pushkov Nikolai (...24041-034 ≣E20It (open) \
241Shirov Alexei (ESP)2580Lerner Konstantin...25601-041 ≣E20Zt
362Malaniuk Vladimir...2580Naumkin Igor (RUS)24551-037 ≣A40It (open)
235Shirov Alexei (ESP)2580Unzicker Wolfgang...24751-038 ≣E20It
472Ulibin Mikhail (RUS)2581Pikula Dejan (SRB)24841-037 ≣E20It (open)
730Bocharov Dmitry (...2582Andreikin Dmitry ...27050-142 ≣E20Ch Russia (active)25 Apr 2011
445Ulibin Mikhail (RUS)2583Hulak Krunoslav (...25101-038 ≣E20Ch Croatia (team)...
454Ulibin Mikhail (RUS)2583Quinn Mark (IRL)23811-031 ≣E20It (open)
46Polugaevsky Lev A...2585Niephaus Walter (...1-046 ≣E20Ch Europe (team)
31Polugaevsky Lev A...2585Teschner Rudolf (...22951-038 ≣E20Match \
514Khenkin Igor (GER)2587Palac Mladen (CRO)25431-024 ≣E20Memorial Leonardo...25 Apr 2003
522Khenkin Igor (GER)2587Ayas Fernandez An...23361-046 ≣E20It (open)04 Jul 2004
495Khenkin Igor (GER)2587Guido Flavio (ITA)23531-041E20It (open)
428Shariyazdanov And...2588Brumen Dinko (CRO)23601-032 ≣E20Ch Croatia (team)...
420Avrukh Boris (ISR)2588Van Der Sterren P...25351-024 ≣E20It (cat.14)
326Piket Jeroen (NED)2590Korchnoi Viktor (...26250-135 ≣E20Match
729Bluvshtein Mark (...2593Barrientos Sergio...25071-044 ≣E20Ch American Conti...19 Apr 2011
702Volkov Sergey Vik...2595De-Lisa Carmine (...17361-032 ≣E20It (open)22 Jul 2010
537Berkes Ferenc (HUN)2596David Alberto (LUX)25951-041 ≣E20It (open) \23 Feb 2005
561Berkes Ferenc (HUN)2596Romanov Evgeny (RUS)24791-046 ≣E20Ch World (juniors...18 Nov 2005
809Papaioannou Ioann...2597Aswin Jayaram (IND)24761-041 ≣E20It (open)28 Jul 2012
617Khenkin Igor (GER)2600Rodriguez Amador ...24811-035 ≣E20It (open) (active)03 Nov 2007
388Sakaev Konstantin...2600Ivanov Alexey Jr ...24240-138 ≣E20Cup European Club
500Dao Thien Hai (VIE)2601Adianto Utut (INA)25880-133 ≣E20SEA Games
807Aleksandrov Aleks...2602Ibragimov Ildar (...25391-026 ≣E20Cup Russia (open)24 Jul 2012
468Kobalia Mikhail (...2603Psakhis Lev (ISR)25731-049 ≣A40It (open)
244Beliavsky Alexand...2605Hjartarson Johann...25051-023 ≣E20Cup World (qual)
414Volkov Sergey Vik...2605Obukhov Alexander...24351-023 ≣E20Cup Russia (open)
382Adianto Utut (INA)2605Liu Dede (INA)24051-047 ≣E20It (cat.13)
417Volkov Sergey Vik...2605Yakovich Yuri (RUS)25601-026 ≣E20Ch Russia
230Beliavsky Alexand...2605Portisch Lajos (HUN)25901-040 ≣E20It \
796Aleksandrov Aleks...2606Kunte Abhijit (IND)25381-035 ≣E20Cup Mayors (open)14 Jun 2012
756Volkov Sergey Vik...2607Naumkin Igor (RUS)24861-039 ≣E20It (open)13 Sep 2011
240Sakaev Konstantin...2609Emms John M (ENG)24301-037 ≣E20It
258Shirov Alexei (ESP)2610Renet Olivier (FRA)24851-031 ≣E20Match
269Dreev Alexey (RUS)2610Anand Viswanathan...26500-136 ≣E20Ch World (match) ...
257Shirov Alexei (ESP)2610Renet Olivier (FRA)24851-028 ≣E20Match
750Volkov Sergey Vik...2614Bruzon Lazaro (CUB)26820-140 ≣E20It (open)08 Aug 2011
763Volkov Sergey Vik...2614Stockmann Michael...22841-038 ≣E20It (open)
399Malaniuk Vladimir...2615Springer Karl (AUT)20991-025 ≣E20It (open)
256Khenkin Igor (GER)2624Lengyel Levente (...22931-028 ≣E20It \
254Khenkin Igor (GER)2624Ulibin Mikhail (RUS)24600-139 ≣A40It
478Volkov Sergey Vik...2624Istratescu Andrei...25931-045 ≣E20It (open)
243Khenkin Igor (GER)2624Karpman Vadim (UKR)23821-026 ≣E20Ch URS (young mas...
261Khenkin Igor (GER)2624Schneider Lars-Ak...23641-031 ≣E20It \
760Gupta Abhijeet (IND)2625Vidit Santosh Guj...25081-041 ≣E20Ch India12 Oct 2011
669Nyback Tomi (FIN)2627Macieja Bartlomie...26120-134 ≣E20Memorial M.Najdor...24 Jul 2009
516Volkov Sergey Vik...2628Trajkovic Predrag...24320-149E20Tournament \
521Volkov Sergey Vik...2628Jeremic Veljko (SRB)25290-133 ≣E20It (open)