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Larsen's Opening 1.b3

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
798Abergel Thal (FRA)2504Apicella Manuel (...25400-121 ≣A01Ch France (b)23 Aug 2011
366Abrines Sampol Lo...1716Simonet Planas Ad...20580-120 ≣A01Ch Spain (open)
104AchtmannLaketic Gojko (SRB)24430-121 ≣A01It (open) \
327Acosta EdinsonViloria Daniel19500-116 ≣A01Ch ATL
613Afanasyev Valenti...Rogov Nikolay (RUS)18980-117 ≣A01Ch Russia (for th...12 Aug 2007
170Alberto OriaCasimiro Ballina1-020 ≣A01Ch Asturias (team...
171Alberto OriaRodrigo Prieto Perez1-013 ≣A01Ch Asturias (team...
126Albrecht HermannWeber Siegfried (...22891-022 ≣A01Ch Hessen (seniors)
462Al-Modiahki Moham...2577Alexandrov Valery...21841-022 ≣A01Simultan23 Apr 2003
463Al-Modiahki Moham...2577Kafetzis Georgios...19431-021 ≣A01Simultan23 Apr 2003
766Alshikh Kheele Wa...Safar Reem (QAT)17021-020 ≣A01Asian Games (team...20 Nov 2010
472Alvarez Mesa AlfonsoMenendez Solar Jo...19651-022 ≣A01Ch Asturias12 Mar 2004
755Al-Zarif Bassam (...1691Lozano Sanchez Jo...19140-122 ≣A01It (open)09 Sep 2010
80Amura Claudia N (...2328Piza Cortizo Dani...22610-122 ≣A01Ch Argentina (1/2...
11Anagnostopoulos KSiaperas Triantaf...23850-113 ≣A01Tournament
684Angalone Ruggero ...1624Astengo Corrado (...21590-113 ≣A01Memorial Palladin...11 Apr 2009
432Angerer Helmut (AUT)2195Lawitsch Guenther...22301-014 ≣A01Staatsliga B West...
288Anghelus MariusHariga A0-122 ≣A01It (open) (a)
225Anibal Joaquim (POR)2120Carvalho Alda (POR)20411-021 ≣A01Ch Portugal (team)
40Anitei Ion (ROM)2170Podgornei Liviu (...21420-121 ≣A01Ch Romania (1/4 f...
395Antonano Avelino ...2136Guzman Moneo Albe...20980-118 ≣A01It (open) (c)
261Antonio Martin Ma...Perez Mario Olea0-122 ≣A01Ch Asturias (qual.)
30Antonopoulos Soti...Alexopoulos Georg...22490-116 ≣A01Ch Greece (juniors)
27Aprea FernandoLeoncini Mario (ITA)21410-119A01Tournament
710Argemi Puig PereMontana Lopez Jor...0-118A01It (open) (b)24 Oct 2009
204Arning AlexanderGuenter Tim0-117 ≣A01Tournament (junio...
7Artemis ASkalkotas Nikolao...22600-121 ≣A01Tournament
687Arturo Jose Elver...1866Juez Jhon Alexand...20360-114 ≣A01Ch Colombia (juni...21 May 2009
688Arturo Jose Elver...1866Ospina Jhonny (COL)20101-020 ≣A01Ch Colombia (1/2 ...01 Jun 2009
698Ask Josef (SWE)2191Brynell Stellan (...24710-119 ≣A01It (open) \19 Jul 2009
264Assmann Hans (GER)1781Osmani Remzi (BIH)21680-120 ≣A01It (open)
622Assmann Hans (GER)1821Gabriel Josef (GER)21800-118 ≣A01Ch Germany (senio...14 Sep 2007
497Aufmwasser Guente...1889Buchner Matthias ...17641-014A01It (open) (seniors)04 Mar 2005
814Avella Rosas Luis...1985Zapata Campos Kar...21470-120 ≣A01It (open)06 Dec 2011
784Avella Rosas Luis...1989Paez Sussi Brigitte1-019 ≣A01It (open)18 Jun 2011
852Avella Rosas Luis...1980Sanchez Harrison17481-012 ≣A01It (open)
851Avella Rosas Luis...1980Rojas Santiago1-019 ≣A01It (open)
299Ayllon Barranco M...1705Serrano Aspa Pedr...20540-120 ≣A01It (open)
300Ayllon Barranco M...1705Vera Pons Felipe ...22460-111 ≣A01It (open)
356Bachmann Axel (PAR)2550Vera Ruben1-020 ≣A01Tournament (junio...
227Bagirov Vladimir ...2505Minaux G1-020 ≣A01It (open)
271Bagirov Vladimir ...2480Schubert Hans-Joa...20641-017 ≣A01Ch World (seniors)
662Bajarani Ulvi (AZE)2232Amin Bassem (EGY)25600-122 ≣A01It \08 Sep 2008
578Balkishan A (IND)1954Ganesh Babu S (IND)20440-121 ≣A01Ch Asia (juniors)...10 Nov 2006
601Barakin Gennady (...2004Krivoshapko Alexa...21260-122 ≣A01Tournament (open)27 Jun 2007
630Barakin Gennady (...1980Krivoshapko Alexa...20570-110 ≣A01Ch City07 Feb 2008
312Barczi Tibor (SVK)2092Markos Jan (SVK)22480-113 ≣A01Ch Slovakia (juni...
583Barnaure Vlad-Vic...2433Grunberg Mihai-Lu...24140-116 ≣A01Ch Romania05 Dec 2006
525Barth Norbert (GER)2234Kaeppel Roland (GER)21701-013 ≣A01Bayern Regionalli...27 Nov 2005
708Bartolome Chichar...1823Garcia Alonso David1-017 ≣A01It \27 Sep 2009
6Basman Michael J ...2338Holaszek Hans0-121 ≣A01Ch World (team) (...16 Aug 1970
829Batabaev MSapar E0-121 ≣A01Ch Kyrgyzstan04 Apr 2012
237Bathray JohannesFocke Karin1-021 ≣A01Ch Germany (junio...
789Bauer Matthias1579Meissner Peter17600-120A01It (open) (b)25 Jul 2011
523Baugin Alain (FRA)2098Marca Josep19751-021 ≣A01It (open)23 Oct 2005
266Beaton ChristopherLittlejohn James0-117A01Ch Australia (ope...
589Behrendt Kevin1705Goessling Juergen18601-021 ≣A01Ch City (open)13 Mar 2007
577Bekritsky GregoryMeessen Rudolf (BEL)23030-119 ≣A01NRW Klasse 1 2006/0729 Oct 2006
633Bellafiore Enzo (...1782Liviabella Lucio ...16240-110 ≣A01Tournament (weekend)16 Mar 2008
13Bellon Lopez Juan...2385Ljubojevic Ljubom...25501-018 ≣A01It
9Bellon Lopez Juan...2325Benko Pal C (USA)25250-121 ≣A01It
801Bento RudolfoAlho Diogo (POR)0-116A01Ch Portugal (qual)03 Sep 2011
378BenziStavropoulou1-017 ≣A01It (open)
481Berard J1910Garric Victor1-022 ≣A01It (open)16 Jul 2004
699Berg Emanuel (SWE)2610Petersen Tom Petr...23101-022 ≣A01It (open) \23 Jul 2009
514Berkes Ferenc (HUN)2596Navara David (CZE)26460-121 ≣A01Ch Europe (team)06 Aug 2005
99Bernabe ManuelHarabor Mihai0-117 ≣A01World Tournament ...
693Bernacki Gabriel ...1888Slobodzian Mateus...17191-016 ≣A01It (open) (b)05 Jul 2009
305Beyer Felix (GER)2106Kraft Gerhard (GER)19451-018 ≣A01It (open)
140Biaggi Eduardo (ARG)2304Provenzano Hernan1-020 ≣A01It (open)
60Bieluszewski Piot...2117Hansen Olaf (NOR)20730-119 ≣A01Match \
233Binder EPancsosz J0-111 ≣A01It (open)
50Bini Lorenzo (ITA)1933Gallo Enrico (ITA)20661-018 ≣A01It (open)
172Bitsch Volker (GER)1993Schnegelsberg Kar...20321-020 ≣A01Ch Hessen (qual)
598Bitzer Andre1705Gramlich Sebastia...23120-117 ≣A01It (open)11 May 2007
743Blanco Prada Juan...Morales Abril Dan...1-020 ≣A01It (open)19 Jul 2010
352Blatny Pavel (CZE)2535Sivasailam Jay1-017 ≣A01It (open)
671Blatny Pavel (CZE)2416Bazant Petr (CZE)23080-16 ≣A01Czech League 2008...29 Nov 2008
343Blatny Pavel (CZE)2535Miton Kamil (POL)24430-122 ≣A01It (open)
587Bobanac Miro (CRO)2308Sutkovic Damir (BIH)23180-120 ≣A01It (open)07 Jan 2007
181Bodin Stefan (SWE)1908Bellon Lopez Juan...24600-116 ≣A01Cup Rilton
242Boersma Paulus A ...2350Computer \1-021 ≣A01It \
777Bogdan Laura-IuliaPoama-Covaci Iulia1-015 ≣A01Ch Romania (junio...16 Apr 2011
672Bogdanov Rodion (...2076Tvelenev D1-015 ≣A01Ch City (open)
125Bomert Egon (GER)2121Fischer A (GER)1-019 ≣A01Ch Hessen (qual)
762Borawski Jakub (POL)1867Burakowska Gabrie...15601-012 ≣A01It (open) (b)
313Borrazas RamonSoto Gutierrez Al...19561-017 ≣A01It (open)
25BorrelliRisso1-018 ≣A01corr.
207Borsavolgyi Tamas...2305Watanabe Akira (JPN)22750-119 ≣A01It (cat.3)
143Bosco Ricardo (ARG)2142Szmetan Jorge (ARG)24200-114 ≣A01It (open) \
796Bosschieter PeterVan Vooren Gert18920-117A01It (open)15 Aug 2011
626Bragin Aleksandr ...2281Loskutov Oleg (RUS)24310-121 ≣A01Ch City15 Dec 2007
505Brandt Madeleine1560Kitzler Gerhard10570-122 ≣A01Ch Braunfels13 May 2005
750Breit Nikolai (RUS)2006Pozdniakov Vladim...21860-110 ≣A01Ch Chess Club12 Aug 2010
441Breton YvesPagnoncelli Herve...18610-121 ≣A01It (open)
825Briggs Andrew JOthman Mustapha18820-121A01It \16 Feb 2012
83Broehl Stefan (GER)2140Schneider Beatrix...20500-122 ≣A01It (open) \
493Brunetti Fernando...1884Della Morte Pablo...23020-122 ≣A01It (open)08 Jan 2005
370Bruno EstebanFiori Alberto Nic...20620-122 ≣A01Ch Argentina (jun...
425Bugarija Zdravko ...2101Vidovic Ante (CRO)21581-015 ≣A01It (open)