Mezue ahịrịokwu na-esonụ: FIDE nyere Nielsen aha nke International Master na 1991 na nke Grandmaster na 1994. O meriri Danish Chess Championship ugboro ise: na 1996, 1999, 2001, 2003, na 2008. Ọ gbara bọọlụ maka mba Denmark n'egwuregwu Chess Olympiad asaa, ugboro atọ n'elu bọọdụ, na nsonaazụ nke 60.1% (+24−10=35). O ritere ọlaedo n'otu n'otu na bọọdụ nke atọ na
Moscow 1994.