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The encounters in the Book of Challenges include straightforward traps (such as a domed room with a hinged floor that serves as the hidden lair for a beholder).It also includes challenging logic puzzles, riddles and even role-playing encounters where combat or mechanics skills play a secondary role.
Usually, situation puzzles are played in a group, with one person hosting the puzzle and the others asking questions which can only be answered with a "yes" or "no" answer. Depending upon the settings and level of difficulty, other answers, hints or simple explanations of why the answer is yes or no, may be considered acceptable.
Four glasses or tumblers are placed on the corners of a square Lazy Susan.Some of the glasses are upright (up) and some upside-down (down). A blindfolded person is seated next to the Lazy Susan and is required to re-arrange the glasses so that they are all up or all down, either arrangement being acceptable, which will be signalled by the ringing of a bell.
The muddy children puzzle is the most frequently appearing induction puzzle in scientific literature on epistemic logic. [4] [5] [6] Muddy children puzzle is a variant of the well known wise men or cheating wives/husbands puzzles. [7] Hat puzzles are induction puzzle variations that date back to as early as 1961. [8]
Buried in ash after Mount Vesuvius’ eruption in 79AD, the secret of a papyrus scroll kept their secrets hidden for centuries. Now one has been deciphered by AI.
One of Smullyan's examples of this type of puzzle involves three inhabitants referred to as A, B and C. The visitor asks A what type he is, but does not hear A's answer. B then says "A said that he is a knave" and C says "Don't believe B; he is lying!" [2] To solve the puzzle, note that no inhabitant can say that he is a knave. Therefore, B's ...
A puzzle with only one solution cannot have a 2 in a corner with two non-diagonally adjacent, unconstrained squares, and a diagonally adjacent 0 or 1.) If there are two paths between two points, such that a solution containing one must also work with the other, then both paths can be ruled out.
P. T. Barnum saw the opportunity to promote his show on this puzzle card and offered ten thousand dollars to Sam Loyd to change the name of the puzzle to "P.T. Barnum's Trick Mules" [7] Later on, and after Loyd had offered the puzzle to other firms, it was renamed again to "Famous Trick Donkeys", which sold more than 100,000,000 copies. [8]