Peg solitaire is a one-player board game in which pegs are placed in every hole but
one and the player jumps over pegs along rows or columns to remove them. Usually,
the goal of the player is to leave only one peg. In a 2011 paper, this game was
generalized to graphs. We consider a new variant of peg solitaire on graphs in which
pegs can be removed either by jumping them or by merging them together. For this
variant, we show that several classes of graphs are solvable. These graphs include
stars, caterpillars, trees of diameter 4, trees of diameter 5, and articulated
caterpillars. We conclude this paper with several open problems related to this
study.
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