@misc{indiciae4c5858f8bfda,
  title = {Solving combinatorial problems: the 15-puzzle.},
  author = {Zygmunt Pizlo and Zheng Li},
  year = {2005},
  doi = {10.3758/bf03193214},
  url = {https://pubmed.ncbi.nlm.nih.gov/16496727/},
  note = {Source identifier: 16496727}
}