What makes a maze-based programming challenge difficult? - Ioanna Kanellopoulou; Pablo Garaizar; Mariluz Guenaga (LASI-SPAIN, 2021)

First Steps Towards Automatically Defining the Difficulty of Maze-Based Programming Challenges. - Ioanna Kanellopoulou; Pablo Garaizar; Mariluz Guenaga (IEEE Access, 2021)