Circular Nim Games
Matthieu Dufour, Silvia Heubach · The Electronic Journal of Combinatorics · 2013
A circular Nim game is a two player impartial combinatorial game consisting of $n$ stacks of tokens placed in a circle. A move consists of choosing $k$ consecutive stacks, and taking at least one token from one or more of the $k$ stacks. The last player able to make a move wins. We prove results on the structure of the losing positions for small $n$ and $k$ and pose some open questions for further investigations.