Puzzled: Solutions and sources

Peter Winkler. Puzzled: Solutions and sources. Communications of the ACM, 57(9):102, 2014. [doi]

@article{Winkler14e,
  title = {Puzzled: Solutions and sources},
  author = {Peter Winkler},
  year = {2014},
  doi = {10.1145/2642744},
  url = {http://doi.acm.org/10.1145/2642744},
  researchr = {https://researchr.org/publication/Winkler14e},
  cites = {0},
  citedby = {0},
  journal = {Communications of the ACM},
  volume = {57},
  number = {9},
  pages = {102},
}