2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/153317A 2d unsteady bicharacteristic scheme with shock fitting is presented and its characteristic step, shock point step and boundary step are described. The bicharacteristic scheme is compared with an UNO scheme and the Moretti scheme. Its capabilities are illustrated by computing a converging, deformed shock wave.4 pages, LaTeX, 7 figuresFluid DynamicsComputational Physicstext