Covering Partial Cubes with Zones -- The Non-confusing Travel Groupoids on a Finite Connected Graph -- Decomposing Octilinear Polygons into Triangles and Rectangles -- On Wrapping Spheres and Cubes with Rectangular Paper -- On Polygonal Paths with Bounded Discrete-Curvature: The Inflection-Free Case -- Online Weight Balancing on the Unit Circle -- Transformability and Reversibility of Unfoldings of Doubly-Covered Polyhedra -- Computational Complexity of the r-visibility Guard Set Problem for Polyominoes -- Properly Colored Geometric Matchings and 3-Trees Without Crossings on Multicolored Points in the Plane -- Generating Polygons with Triangles -- Cross-Intersecting Families of Vectors -- The Double Multicompetition Number of a Multigraph -- Computational Geometry in the Human Brain -- A Characterization of Link-2 LR-visibility Polygons with Applications -- Imaginary Hypercubes -- More Results on Clique-chromatic Numbers of Graphs with No Long Path.