2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/136551Given a grid presentation of a knot (or link) K in the three-sphere, we describe a Heegaard diagram for the knot complement in which the Heegaard surface is a torus and all elementary domains are squares. Using this diagram, we obtain a purely combinatorial description of the knot Floer homology of K.22 pages; 9 figures. Expanded proof of Proposition 2.3 and corrected typeosGeometric TopologySymplectic Geometry57R58, 57M25text