Chess or jass: what requires more intelligence? (Jass is a very popular Swiss card game of the same family as whist and bridge, though more homespun than the latter.) Generally, it is assumed that chess requires more intelligence, for obviously less intelligent players definitely stand a chance of winning at cards while they don’t in chess. If we consider, however, what a computer program must be able to do in order to win, the picture soon looks different: chess is clearly simpler for a machine. This may surprise you, but it is worth looking at the features the two games