Odd or Even (1970)

This Sackson design is a simple abstract. Players take turns placing pegs on the board, with each peg having to be adjacent to the last one. If playing with the Odd rule, when a peg is placed it must be adjacent to an odd number of pegs. If playing with the Even rule, it must be adjacent to an even number of pegs (except for the second peg placed). There are two further variants given in the rules, plus a solitaire version. Part of Stancraft's Hoyle Official Games line.