Longlasting (50 years or more) and ongoing annual chess tournament series of major international status

U.S. Open *1900 - www.chessdiagonals.ch

Hastings *1920/21 - www.chessdiagonals.ch

Wijk aan Zee *1938 - www.chessdiagonals.ch

==>> Hastings & Wijk - www.chessdiagonals.ch

Sarajevo *1957 - www.chessdiagonals.ch (Bosna, today a rather regional Open tournament)

Havana *1962 - www.chessdiagonals.ch (Capablanca Memorial, played at various venues)

Biel Festival - www.chessdiagonals.ch, Lächeln 50th consecutive annual edition in 2017

For an overall survey of recurring individual international tournament *serials* in classical chess, please visit: Tournament *series* - www.chessdiagonals.ch

Relaunch of a traditional tournament

TePe Sigeman & Co., 10 - 14 May 2017 at Malmö

(1st edition 1993, 22nd edition 2014, 23rd edition 2017)
Malmö (TePe Sigeman & Co.) - www.chessdiagonals.ch

Open Superseries in classical chess

present:

Aeroflot Open, Moscow

Biel Master Tournament Open
(==> part of Biel International Chess Festival, 50th years jubilee in 2017)

Bosna, Sarajevo, former strong invitational, now a rather local Open

Canadian Open Chess Championship, at various venues

Cappelle-la-Grande Open, currently of rather local character

Dubai Open Sheikh Rashid Bin Hamdan Al Maktoum Cup, Dubai

Gibraltar Chess Congress Tradewise Masters Catalan Bay / La Caleta Superopen 2017

Grenke Chess Open, Karlsruhe (following the Neckar-Open, Deizisau)

Hastings Chess Congress, legendary invitation tournament, now Open

Isle of Man chess.com Open, Port Erin, today in Douglas Superopen 2017

Politiken Cup, Xtracon Chess Open, Copenhagen, today in Helsingør

Reykjavik Open, starting as an invitation tournament

Rilton Cup, Stockholm

U.S. Open Chess Championship
(1st edition held in 1900,annually without any break!!)
in swiss system since the mid-1940s, at various venues

World Open, mainly in Philapelphia, early editions in New York,
later sometimes also in Arlington or other U.S. cities

past Superopen:

Lloyds Bank Masters, London, 1977-1994

Lone Pine, Louis D. Statham Tournament, California, 1971-1981

Lugano Open, Switzerland, 1976-1989

New York Open, New York City, 1981-2000 (no editions '82, '99)


Worth of mention:

OHRA Open, Amsterdam, 1982-1990 (with GM tournaments 1985-1990)


recently cancelled or interrupted series:

Millionaire Chess (MC) Open, Las Vegas 2014 & 2015, Atlantic City 2016

Qatar Masters, Doha, 2014 & 2015


For more details, further links, list of winner, anecdotes and background stories:

Open Superseries - www.chessdiagonals.ch

Famous former invitation series (a selection)

History: Banja Luka - www.chessdiagonals.ch

History: Alicante
History: Dos Hermanas
History: Las Palmas
History: Magistral de Madrid
 (and earlier tournaments)
History: Olot
History: Palma de Mallorca
History: Pamplona
History: Terrassa
History: Zafra et al., Ruy Lopez Festival (played at various venues)

==> Spain invitationals - www.chessdiagonals.ch

History: London, Lloyds Bank Open
History: London, Phillips & Drew Kings, then GLC Chess Challenge
History: London, Watson, Farley, Williams (one event in New York)
History: London, Staunton Memorial
History: Margate Chess Congress
History: Teesside
(diverse tournaments in a row)

==> Great Britain series - www.chessdiagonals.ch
including current top series Gibraltar Tradewise, London Chess Classic and Isle of Man Open!

History: Ostend
History: Brussels OHRA and Brussels SWIFT

==> Belgium series - www.chessdiagonals.ch
a complete Belgian chess history, including Spa (FBE), Liège (World Exposition), Lost Boys Festival series; and Leuven Rapid & Blitz series since 2016

History: Reggio Emilia
History: Rome (Banco di Roma) 
History: Venice

==> Reggio, Rome, Venice - www.chessdiagonals.ch 

History: Haninge
History: Nanjing, Pearl Spring
History: Novgorod
History: Paks, Marx György Memorial

History: Sofia, M-Tel
plus history of many other places / series !

Special: Athens Acropolis
Special: Gausdal Classics

==> Closed elite series - www.chessdiagonals.ch

Excursus: GMA Open series 1988-1989, 1990
Excursus:
PCA Super Classic series 1995 

==> Tournament *series* - www.chessdiagonals.ch 

with a survey of the current supertournament *series* in classical chess

Longlasting and ongoing series in Rapid

Corsican Circuit, Rapid Chess Festival 

==> Tournament *series* - www.chessdiagonals.ch

International tournament series in Switzerland

Special: Serials in Switzerland
Major recurring international open or closed chess tournament series - past and present

Basel Open

Basel Open - www.chessdiagonals.ch

http://schachfestivalbasel.ch/ (Basel)

Biel Festival

Biel Festival - www.chessdiagonals.ch

==>> Biel Interzonals - www.chessdiagonals.ch

==>> Winners at Biel - www.chessdiagonals.ch

http://www.bielchessfestival.ch/ (Biel)

Geneva all 

Geneva all - www.chessdiagonals.ch

Zurich all incl. Horgen

Zurich all - www.chessdiagonals.ch

http://www.weihnachtsopen.ch/ (Zurich)

http://www.zurich-cc.com/ (Zurich)

History: SCRM Pfäffikon (Rapid)
History: Winterthur Chess Week, Open
History: Liechtenstein Open

Zurich all - www.chessdiagonals.ch

History: Bern all

History: Bern - www.chessdiagonals.ch

History: Lausanne Young Masters YM

History: Lausanne YM - www.chessdiagonals.ch

http://www.lausanneyoungmasters.com/
(Young Masters LYM and Lausanne Open, series stopped)

History: Lucerne all

History: Lucerne - www.chessdiagonals.ch

History: Lugano Open
History: Brocco Open, San Bernardino

History: Lugano Open - www.chessdiagonals.ch

International chess circuit in the years 1946 and 2014

Chessdiagonals also presents a survey of the chess circuit in 1946, the beginning of modern chess after WWII and the death of Alekhine (March 1946), Capablanca (1942), and Lasker (1941).

Enjoy the best games played in 1946, watch out this unique summary of all major international invitation tournaments held in 1946, with the busiest players on chess circuit about 70 years ago.

Chessdiagonals was launched in 2014, that corresponding chess year earns a closer look, too:

1946 & 2014 - www.chessdiagonals.ch