I have a theory that there's a certain addictive quality not just in chess but in a lot of cognitive pursuits. Anything that has certain payoff either in terms

I have a theory that there's a certain addictive quality not just in chess but in a lot of cognitive pursuits. Anything that has certain payoff either in terms of winning the game, or even in simply seeing the solution (correct sequence) to a given position as a sort of "Aha!" moment.