The term "grand master" can be replaced with several synonyms such as "champion," "mastermind," "virtuoso," "icon," "expert," "genius," "wizard," "maestro," "prodigy," and "guru." These words all signify someone who is highly skilled and experienced in their respective fields, whether it be in chess, music, or any other area of expertise. A grand master encompasses not only a level of skill and talent, but also a level of mastery and accomplishment that sets them apart from their peers. By using these alternative terms, one can convey the same sense of excellence and achievement without repeating the same phrase over and over again.