Hi-Q

A game played on a board of a given shape consisting of a number of holes of which all but one are initially filled with pegs. The goal is to remove all pegs but one by jumping pegs from one side of an occupied peg hole to an empty space, removing the peg which was jumped over. One of the most common configurations is a cross-shaped board with 33 holes. All holes but the middle one are initially filled with pegs. Strategies and symmetries are discussed by Gosper et al. (1972). Berlekamp et al. (1982) give a complete solution of the puzzle.

checkers | Conway's soldiers