Deduction board game are drawn at random. Notable members of this category include "Black Box" and "Master Mind". Investigation games are board games in which the players generally play as police, detectives or other investigators. The best known game of this type is "Cluedo". In fact, many of games in this category utilize a mechanic known as "The Missing Card," which was developed by Anthony E. Pratt for "Cluedo" ("Clue" in the United States). "The Missing Card" takes a known set of cards (or other token) and removes one or more of them. By gathering information and using deduction and logic, the players
Breakthru (board game) Breakthru (board game) Breakthru is an abstract strategy board game for two players, designed by Alex Randolph and commercially released by 3M Company in 1965, as part of the 3M bookshelf game series. It later became part of the Avalon Hill bookcase games. It is no longer in production. The game has been compared to Fox and Hounds, although it shows more characteristics of the Tafl games of the Middle Ages, such as Hnefatafl. As in Hnefatafl, the game features unevenly matched teams with different objectives. The 3M game set includes a board marked with an 11x11 square grid of