English

The game of Flipping Coins

Combinatorics 2021-03-01 v1

Abstract

We consider Flipping Coins, a partizan version of the impartial game Turning Turtles, played on lines of coins. We show the values of this game are numbers, and these are found by first applying a reduction, then decomposing the position into an iterated ordinal sum. This is unusual since moves in the middle of the line do not eliminate the rest of the line. Moreover, when GG is decomposed into lines HH and KK, then G=(H:KR)G=(H:K^R). This is in contrast to Hackenbush Strings where G=(H:K)G= (H:K).

Keywords

Cite

@article{arxiv.2102.13225,
  title  = {The game of Flipping Coins},
  author = {Anthony Bonato and Melissa A. Huggan and Richard J. Nowakowski},
  journal= {arXiv preprint arXiv:2102.13225},
  year   = {2021}
}

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19 pages