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A codex of \(\mathcal{N}\)- and \(\mathcal{P}\)-positions in Harary’s ‘caterpillar game’. (English) Zbl 1475.91043

Summary: Frank Harary proposed the following game: Given a caterpillar \(C\), two players take turns removing edges of a path. The player who takes the last edge wins the game. In this paper, we completely characterize the \(\mathcal{N}\)- and \(\mathcal{P}\)-positions for all caterpillars with spine length zero, one, two and three. Furthermore, we analyze approximately 94% of the caterpillars with spine length greater than or equal to four. In those cases, they all turn out to be \(\mathcal{N}\)-positions.

MSC:

91A46 Combinatorial games
91A05 2-person games

References:

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