To play chess on a truly high level requires a constant stream of exact, informed decisions, made in real time and under pressure from your opponent. What's more, it requires a synthesis of some very different virtues, all of which are necessary to good decisions: calculatioñ, creativity and a desire for results. If you ask a Grandmaster, an artist and a computer scientist what makes a good chess player, you'll get a glimpse of these different strengths in action.