Abstract: A puzzle or game including a set of pieces combinable to form a rectangular array and a retainer for holding said pieces in a tubular or circular form dimensioned in accordance with the Phi factor, (.phi.). The set of pieces is divided into three subsets of different colors to be combined in rows of equal length in which no piece of any given subset abuts any other piece of the same subset end-to-end or side-to-side. The pieces carry indicia also to be combined in the array in distinctive fashion related to .phi..