Waxad ku qortaa sii wadida cutubkan - wuxuu dhashay 1966kii, wuxuu Danielsen ku guuleystay horyaalkiisa Grandmaster 1996kii. Sannadkii 1993, wuxuu ku dhammeystay kaalinta koowaad ee Politiken Cup isaga iyo Igor Khenkin iyo John Emms oo leh dhibco dhan 71⁄2/10. Wuxuu ka qayb galay lix Olombikada Chess: saddex Denmark (1992, 1994 iyo 1996); saddex Iceland (2006, 2008
iyo 2012). Waa ciyaaryahanka 4aad ee ugu sarreeya Iceland laga bilaabo Sebtember 2020.