Buuxi weedhan soo socota: Waxay ku guuleysatay Horyaalka Haweenka Dutch ee Chess 1974 iyo mar kale 1976 ilaa 1979. Waxay sidoo kale u tartantay Olombikada Nederland, markii ugu horreysay kooxda haweenka ee Olombikada Chess-ka ee 22aad (1976), oo ku guuleysatay billad naxaas ah. Sanadkii 1980 waxay joojisay ciyaarista shaashadda xirfadeed. Muuqaalkeedii ugu dambeeyay ee Olombikada wuxuu ahaa
Olombikada Chess-ka ee 28-aad (1988).