Rubuta ci gaba don wannan sakin layi - A wasan kasa da kasa, Guillermo Vassaux ya wakilci Guatemala a wasa da El Salvador a 1930, wasan farko na wasan chess da kasashe biyu na Amurka ta Tsakiya suka yi. Ya halarci gasar Chess Olympiad sau ɗaya, yana wakiltar Guatemala a kan kwamitin farko a gasar Chess Olympiad ta 8.
a shekarar 1939 a Buenos Aires, ya ci nasara biyar, biyu ya yi daidai, da kuma asarar takwas.