"It was Duchamp, wasn't it, that gave up his art, his projects, for chess? Perhaps not true, but I remember it so. Did Duchamp not talk of chess being the highest form of art because it is - in the most basic form - a visual representation of human thought, but also because it, as does life, contains rules, symbolism, sign structures, competitiveness, relationship...? Is it not also true that it cannot be commercialised like art?" ...