2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/31704We report a small advance on a question raised by Robertson, Schweitzer, and Wagon in [RSW02]. They constructed a genus-13 polyhedron built from bricks without corners, and asked whether every genus-0 such polyhedron must have a corner. A brick is a parallelopiped, and a corner is a brick of degree three or less in the brick graph. We describe a genus-3 polyhedron built from bricks with no corner, narrowing the genus gap.5 pages, 3 figuresComputational GeometryDiscrete MathematicsF.2.2,G.2text