In 1906 he agreed to terms for a World Championship match with Emanuel Lasker, but political problems in Cuba, where the match was to be played, caused the arrangements to be canceled.
En 1906 conveu os termos para un match polo Campionato do Mundo de Xadrez con Emanuel Lasker, pero varios problemas políticos internos de Cuba -onde ía celebrarse o encontro- obrigaron a cancelar os preparativos.