  hex is a strategy board game played on a hexagonal grid, theoretically of any size and several possible shapes, but traditionally as an 11Ã11 rhombus. other popular dimensions are 13Ã13 and 19Ã19 as a result of the game's relationship to the older game of go. according to the book a beautiful mind, john nash (one of the game's inventors) advocated 14Ã14 as the optimal size. ==history== the game was invented by the danish mathematician piet hein, who introduced it in 1942 at the niels bohr institute. it was independently re-invented in 1947 by the mathematician john nash at princeton university. it became known in denmark under the name polygon (though hein called it con-tac-tix); nash's fellow players at first called the game nash. according to martin gardner, some of the princeton university students also referred to the game as john (according to some sources this was because they played the game using the mosaic of the bathroom floor). however, according to sylvia nasar's biography of john forbes nash a beautiful mind, the game was referred to as "nash" or "john" after its apparent creator. john nash was said to have thought of this game, independent of hein's, during his graduate years at princeton. in 1952 parker brothers marketed a version. they called their version "hex" and the name stuck. hex is an abstract strategy game that belongs to the general category of "connection" games. other connection games include omni, y and havannah. all of these games bear varying degrees of similarity to the ancient asian game of go. ==rules== thumb|a game of hex on a go-style 19Ã19 board each player has an allocated color, red and blue or white and black being conventional. players take turns placing a stone of their color on a single cell within the overall playing board. the goal for each player is to form a connected path of the
Abstract_strategy_games Board_games_introduced_in_1942 Connection_games Mathematical_games PSPACE-complete_problems Paper-and-pencil_games Parker_Brothers_games