License: Creative Commons Attribution 4.0 International license (CC BY 4.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.FUN.2022.23
URN: urn:nbn:de:0030-drops-159935
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Paz, Ami ; Peterfreund, Liat

Playing Guess Who with Your Kids

LIPIcs-FUN-2022-23.pdf (0.9 MB)


Guess who is a two-player search game in which each player chooses a character from a deck of 24 cards, and has to infer the other player’s character by asking yes-no questions. A simple binary search strategy allows the starting player find the opponent’s character by asking 5 questions only, when the opponent is honest.
Real-life observations show that in more realistic scenarios, the game is played against adversaries that do not strictly follow the rules, e.g., kids. Such players might decide to answer all questions at once, answer only part of the questions as they do not know the answers to all, and even lie occasionally. We devise strategies for such scenarios using techniques from error-correcting and erasure codes. This connects to a recent line of work on search problems on graphs and trees with unreliable auxiliary information, and could be of independent interest.

BibTeX - Entry

  author =	{Paz, Ami and Peterfreund, Liat},
  title =	{{Playing Guess Who with Your Kids}},
  booktitle =	{11th International Conference on Fun with Algorithms (FUN 2022)},
  pages =	{23:1--23:10},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-232-7},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{226},
  editor =	{Fraigniaud, Pierre and Uno, Yushi},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  URN =		{urn:nbn:de:0030-drops-159935},
  doi =		{10.4230/LIPIcs.FUN.2022.23},
  annote =	{Keywords: Guess Who?, Binary Search, Error Correcting Codes, Erasure Codes}

Keywords: Guess Who?, Binary Search, Error Correcting Codes, Erasure Codes
Collection: 11th International Conference on Fun with Algorithms (FUN 2022)
Issue Date: 2022
Date of publication: 23.05.2022

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