Mezue ahịrịokwu na-esonụ: N'afọ 1990, Petra Krupková nwetara nrite ọla nchara n'asọmpi ndị ntorobịa Czechoslovak nke egwuregwu chess n'ime afọ iri na asatọ nke ụmụ agbọghọ. N'afọ 1992, o keere ọnọdụ nke anọ na World Youth Chess Championship na afọ iri na isii nke ụmụ agbọghọ. N'afọ 1993, Petra Krupková meriri n'asọmpi ndị Czech Women's Chess Championship, mana otu afọ ka e mesịrị, o nwetara ọla nchara n'asọmpi a. N'afọ 1995, na Poland, ọ keere ebe mbụ na Monika Bobrowska na asọmpi Zonal Women's World Chess Championship ma merie ikike isonye na asọmpi Interzonal. Na 1995, Petra Krupková sonyere na
World Chess Championship Interzonal Tournament nke ụmụ nwanyị na Chişinău ebe ọ nọ na 15th ebe. N'afọ 1996, o meriri ọla nchara na U20 European Junior Championship na Hungary.