Paper by Erik D. Demaine
- Hugo Akitaya, Erik D. Demaine, Jason S. Ku, Jayson Lynch, Mike Paterson, and Csaba D. Tóth, “2048 Without Merging”, in Proceedings of the 32nd Canadian Conference in Computational Geometry (CCCG 2020), Saskatchewan, Saskatoon, Canada, August 5–7, 2020.
Imagine t ≤ m n unit-square tiles in an
m × n rectangular box that you can tilt to cause
all tiles to slide maximally in one of the four orthogonal directions. Given
two tiles of interest, is there a tilt sequence that brings them to adjacent
squares? We give a linear-time algorithm for this problem, motivated by 2048
endgames. We also bound the number of reachable configurations, and design
instances where all t tiles permute according to a cyclic permutation
every four tilts.
- Hugo Akitaya's presentation is available on YouTube.
- The paper is available in PDF (774k).
- See information on file formats.
- [Google Scholar search]
See also other papers by Erik Demaine.
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Last updated January 15, 2021 by