Chung, L. and Demaine, E. D. (2023) “Celeste is PSPACE-hard: Discrete and Computational Geometry, Graphs, and Games”, Thai Journal of Mathematics, 21(4), pp. 671–686. Available at: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1538 (Accessed: 9 May 2024).