@article{seeminglysimpleplanningproblemsarecomput,
  title = {Seemingly Simple Planning Problems are Computationally Challenging: The Countdown Game},
  author = {Michael Katz and Harsha Kokel and Sarath Sreedharan},
  year = {2025},
  eprint = {2508.02900},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2508.02900},
}