Concentration (game show)

Concentration is NBC's longest running game show. It aired on NBC from 1958-1973, and ran in syndication in the 1970s. A remake of the game, called Classic Concentration, aired 1987-1991. Various hosts starred in the first Concentration, including Hugh Downs and Jack Barry. Jack Narz hosted the syndicated version of the show in the 1970s. Alex Trebek hosted the latest run of Concentration in 1987.

Brief explaination of rules

In all the formats, two contestants competed to solve a rebus behind doors of numbers. Behind the numbers are prizes. If the two numbers match, then the prize is added to the bank, and the doors open up revealing part of the puzzle. If the contestant solves the puzzle, they win all prizes in their bank up to that point.

Tape status

As far as we know, the 1958-73 episodes have been destroyed by NBC. Only a few remain on the trading block. The Narz episodes fate is uncertain. The Trebek episodes have been preserved, but no version of this show has aired on GSN due to the fact that NBC still holds the rights to the show.