Sleuth Board Game - 1981 - Avalon Hill - Still Sealed

•                                               DESCRIPTION:

A second deck contains 54 search cards, each showing one or two elements, such as diamonds, pairs, blue opals, red pearls, or an element of your choice. Each player receives four face-up search cards; on a turn, you choose one of those cards and ask an opponent how many gem cards they have of the type shown. If you ask for, say, pairs, the player must tell you how many pairs they hold but not which specific pairs; if you ask for something more specific, say, red diamonds, the player reveals to everyone how many such cards she holds while you get to look at them in secret.

Players track information on a score pad. You can guess the hidden gem at any time, or on your turn you can ask any one question regardless of which search cards you have, then immediately make a guess by marking your sheet and checking the hidden gem card. If you're wrong, you keep playing but can only answer questions; if you're correct, you win.