Producers Jack Barry and Dan Enright created this classic game show, based on the children's matching memory game Concentration. The first match aired on August 25-29, 1958, but it seemed doomed when Barry and Enright (because of their roles in the fast-unfolding Quiz Show Scandals) were forced to relinquish their ownership of the game. However, NBC-TV took over production and the rest is history. 2 contestants, including a returning champion, competed to solve a rebus hidden beneath a board of 30 numbers (1-30). The board itself concealed the names of prizes(good or joke),wild cards and other action cards (described below). Each player in turn, called out a pair of numbers. No match gave his/her opponent control of the board, but a match gave whatever prize was printed on the card or allowed him/her to perform an action.