Three crack propagation tests are proposed, inspired to some extent by the well-known Nooru-Mohamed [6] tests. They present initiation, propagation, reorientation, link-up, and branching. The goal is to compare your simulation results with the measured crack paths and force-displacement curves. The input data consists of specimen geometry, experimentally determined material properties (Young modulus, tensile strength, compressive strength, and fracture energy) and the measured boundary conditions. The names of the tests used thereafter (IT1, IT2 and IT3).