“In chess we have the obligation to move; there is no option to skip a turn if you can’t identify a direction that suits you. One of the great challenges of the game is how to make progress when there are no obvious moves, when action is required, not reaction. The great Polish chess master and wit Tartakower half-joking called this the “nothing to do” phase of the game. In reality, it is here that we find what separates pretenders from contenders.”