Black magic

Black magic is a riddle/guessing game that you can play whenever and whereever without any (special) equipment. However, you need a second player who is able to perform black magic. Due to the nature of the game as a riddle, it can be played until everybody knows the solution; it is no fun then to play it any further.

Equipment

 * You don't need any special equipment; the room you are playing in should contain a few objects that can be pointed at during the game.
 * It should be possible for one player to leave for some time, so it cannot be played while driving in a car, for instance.

Procedure
One of the adept players (A) leaves the room. The other players, lead by the second adept player (B) agree on one of the objects in the room (can be anything in there; the door, a light bulb, a book, the ear of one player, whatever). Then, they call in player A.

B now talks to A and suggest several objects. He asks "Did we decide upon the light bulb?" "Did we decide upon the green book?" "Did we decide upon the black pen?" "Did we decide upon the door?" Player A always answers "no, that's the wrong object", until, of course, when B suggest the correct object, he answers "yes, that was the object you decided upon". The other players are usually astonished and want to find out how that worked.

Typically, a few rounds are played, where the participants get more and more inquisitive but wary. Is it always the fourth object? Do they exchange some secret sign? Is it something player A says? All of this is wrong, of course, pure black magic solves the mystery :-)

Solution
It is more fun fo find the solution by just playing the game and trying. If you want to have it right now: Black magic/solution.

Schwarze Magie