Before revision:  We prove that in a finite two-dimensional torus, an intermittent L\'evy walk whose step-lengths are distributed according to an ] inverse-square power-law is a near-optimal strategy for finding ] sparse targets of any size and shape.
After revision:  We prove that in a finite two-dimensional torus, an intermittent L\'evy walk whose step-lengths are distributed according to an Viswanathan et al. Nature, 1999] inverse-square power-law is a near-optimal strategy for finding ] sparse targets of any size and shape.