November 29, 2011
A participant in several Interzonal tournaments: in 1982 he took eleventh-twelfth, in Biel 1985, fourth-sixth, but missed the Candidates’ by losing the tie-break match to Nigel Short.
Best results in international tournaments: Sochi 1980, 4th-5th; Wijk aan Zee II 1981, 1st; Wijk aan Zee 1982, 3rd-4th; Novi Sad and Marbella Zonal 1982, Arhus and Ostende 1983, 1st; Sarajevo 1984, 3rd-4th; Montpellier Zonal 1985, 1st; Reykjavik 1985, 4th; Brussels 1985, 3rd; Amsterdam 1986, 2nd; San Bernardino 1986, 1st; Wijk aan Zee 1986, 2nd; Saint Bernardino 1986, 1st; Lugano 1987, 2nd-5th; Ter Apel 1987, 1st-3rd; Amsterdam 1987 (OHRA), 1st; Haninge 1989, 2nd; Banesque 1989, 1st; Elgoibar 1998, 1st; Groningen Albin Theme 2001 and Harmonie Groningen 2004, 1st.
In a match, he beat Jeroen Piket in 1986, lost to Vlad Tkachiev 3-7 in 1999 and to the computer Rebel 1½-2½ in 2000.
Between 1980 and 1990, he participated to nine Olympiads from where, in 1988, he was awarded an individual bronze medal for the third best achievement at board one.
Chief editor of the Dutch chess magazine Schaakniews for 10 years. Best ELO: 2590 in 1987.