Knowing a solution is at hand is a huge advantage… Uncertainty is far more challenging

GM Var Akobian in simul match

Knowing a solution is at hand is a huge advantage; it’s like not having a “none of the above” option. Anyone with reasonable competence and adequate resources can solve a puzzle when it is presented as something to be solved. We can skip the subtle evaluations and move directly to plugging in possible solutions until we hit upon a promising one. Uncertainty is far more challenging. Instead of immediately looking for solutions to the crisis, we have to maintain a constant state of asking, “Is there a crisis* forming?”

Garry Kasparov – How Life Imitates Chess