Paper by Erik D. Demaine

Erik D. Demaine, Martin L. Demaine, Ryuhei Uehara, Takeaki Uno, and Yushi Uno, “UNO is hard, even for a single player”, Theoretical Computer Science, volume 521, February 2014, pages 51–61.

This paper investigates the popular card game UNO® from the viewpoint of algorithmic combinatorial game theory. We define simple and concise mathematical models for the game, including both cooperative and uncooperative versions, and analyze their computational complexity. In particular, we prove that even a single-player version of UNO is NP-complete, although some restricted cases are in P. Surprisingly, we show that the uncooperative two-player version is also in P.

This paper is also available from ScienceDirect and as arXiv:1003.2851.

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Related papers:
Uno_FUN2010 (UNO is hard, even for a single player)

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Last updated July 23, 2024 by Erik Demaine.