IBM international chess tournament

The IBM international chess tournament was a series of very strong chess tournaments held in the Amsterdam, Netherlands from 1961 to 1981, and was sponsored by IBM. The list of winners of the main group includes five world champions.

#	Year	Winner
1	1961	Christian Langeweg (Netherlands)
2	1962	Moshe Czerniak (Israel) Hiong Liong Tan (Indonesia)
3	1963	Lajos Portisch (Hungary)
4	1964	Bent Larsen (Denmark)
5	1965	Jan Hein Donner (Netherlands)
6	1966	Mikhail Botvinnik (USSR)
7	1967	Lajos Portisch (Hungary)
8	1968	Lubomir Kavalek (Czechoslovakia)^[1]
9	1969	Lajos Portisch (Hungary)
10	1970	Boris Spassky (USSR) Lev Polugaevsky (USSR)
11	1971	Vasily Smyslov (USSR)
12	1972	Lev Polugaevsky (USSR)
13	1973	Tigran Petrosian (USSR) Albin Planinc (Yugoslavia)
14	1974	Vlastimil Jansa (Czechoslovakia) Vladimir Tukmakov (USSR) Borislav Ivkov (Yugoslavia)
15	1975	Ljubomir Ljubojević (Yugoslavia)
16	1976	Viktor Korchnoi (Switzerland) Tony Miles (England)
17	1977	Tony Miles (England)
18	1978	Jan Timman (Netherlands)
19	1979	Vlastimil Hort (Czechoslovakia) Gyula Sax (Hungary)
20	1980	Anatoly Karpov (USSR)
21	1981	Jan Timman (Netherlands)

References

↑ "Amsterdam IBM (1968)". Chessgames.com. Chessgames Services. Retrieved August 4, 2026.

External links

Media related to IBM international chess tournament at Wikimedia Commons

[1] "Amsterdam IBM (1968)". Chessgames.com. Chessgames Services. Retrieved August 4, 2026.

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v t e Major recurring international chess tournaments
Strong chess tournaments Mini chess tournaments Round-robin chess tournaments
Major present (average rating > 2700; round-robin system generally)	Chennai Grand Masters (since 2023) Grand Chess Tour (since 2015) Grenke Chess Festival (since 2013) Norway Chess (since 2013) Prague Chess Festival (since 2019) Shamkir Chess (since 2014) Shenzhen Masters (since 2017) Sinquefield Cup (since 2013) Tata Steel Chess Tournament (since 1938) Tata Steel India (since 2018) UzChess Cup (since 2024)
Other present (Swiss system generally)	Aeroflot Open (since 2002) Australasian Masters (since 1987) Biel Chess Festival (since 1968) Canadian Open (since 1956) Capablanca Memorial (since 1962) Cappelle-la-Grande Open (since 1985) Carlos Torre Repetto Memorial (since 1987) Chigorin Memorial (since 1909) Doeberl Cup (since 1963) Dortmund Sparkassen Chess Meeting (since 1973) Dubai Open (since 1999) Hastings International Chess Congress (since 1920) Hogeschool Zeeland Tournament (since 1995) London Chess Classic (since 2009) Lublin Grandmaster Tournament (since 2009) Paul Keres Memorials (Tallinn, since 1969) (Vancouver, since 1975) Qatar Masters Open (2014–2015, since 2023) Reykjavik Open (since 1964) Rilton Cup (since 1971) Rubinstein Memorial (since 1963) South African Open (since 1962) TePe Sigeman & Co chess tournament (since 1993) U.S. Open (since 1900) Vidmar Memorial (since 1969) World Open (since 1973) Xtracon Chess Open (since 1979) Zurich Christmas Open (since 1977)
Recently cancelled (after 2000)	Acropolis (1968–2009) Aerosvit (2006–2008) Alekhine Memorial (1956–2013, irregular) Amber (1992–2011) Bilbao Chess Masters Final (2008–2016) Gibraltar Chess Festival (2003–2020) Howard Staunton Memorial (2003–2009) Linares (1978–2010) Mar del Plata (1928–2001) Millionaire Chess (2014–2016) M-Tel Masters (2005–2009) North Sea Cup (1976–2008) Pearl Spring (2008–2010) Reggio Emilia (1947–2012) RTU Open (2011–2024) Tal Memorial (2006–2018) Zurich Chess Challenge (2012–2017)
Major past (19th–20th century)	American Chess Congress (1857–1923) Carl Schlechter Memorial (1923–1996) DSB Congress (1879–1932) General Government (1940–1944) IBM international (1961–1981) Konex (1977–1994) Leopold Trebitsch Memorial (1907–1938) Lone Pine International (1971–1981) Max Euwe Memorial (1987–1996) Monte Carlo (1901–1904; 1967–1969) Netanya (1961–1983) Palma de Mallorca (1965–1972) Phillips & Drew Kings (1980–1986) Piatigorsky Cup (1963–1966) San Sebastián (1911–1912) Silesian Chess Congress (1922–1939) Tilburg (1977–1998) Triberg (1914–1917)
Chess competitions National championships Supranational championships

See also

References

External links