Really interesting question. Some strategic concepts may transfer, say, from chess to chess variants. However, a simple change in the rules can have a huge impa

Really interesting question. Some strategic concepts may transfer, say, from chess to chess variants. However, a simple change in the rules can have a huge impact in the game mechanics as anyone who has tried chess variants [1] knows. [1] https://en.wikipedia.org/wiki/List_of_chess_variants https://en.wikipedia.org/wiki/List_of_chess_variants The answer may be that it is hard enough to become an expert at anything, but there may be some serendipitous (how to make this precise?) overlap.