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Water pouring puzzle. Starting state of the standard puzzle; a jug filled with 8 units of water, and two empty jugs of sizes 5 and 3. The solver must pour the water so that the first and second jugs both contain 4 units, and the third is empty. Water pouring puzzles (also called water jug problems, decanting problems, [1] [2] measuring puzzles ...
A puzzle jug from the Museum of Somerset in England Principle of operation of a puzzle jug: covering the optional hole in the handle with a finger lets the drink be sucked up as with a straw. A puzzle jug is a puzzle in the form of a jug, popular in the 18th and 19th centuries. Puzzle jugs of varying quality were popular in homes and taverns.
Pythagorean cup. A Pythagorean cup (also known as a Pythagoras cup, Greedy Cup, Cup of Justice or Tantalus cup) is a practical joke device in a form of a drinking cup, credited to Pythagoras of Samos. When it is filled beyond a certain point, a siphoning effect causes the cup to drain its entire contents through the base.
An example water jar puzzle. The water jar test, first described in Abraham S. Luchins' 1942 classic experiment, is a commonly cited example of an Einstellung situation. The experiment's participants were given the following problem: there are 3 water jars, each with the capacity to hold a different, fixed amount of water; the subject must figure out how to measure a certain amount of water ...
The Crow and the Pitcher. The Crow and the Pitcher is one of Aesop's Fables, numbered 390 in the Perry Index. It relates ancient observation of corvid behaviour that recent scientific studies have confirmed is goal-directed and indicative of causal knowledge rather than simply being due to instrumental conditioning .
v. t. e. Packing problems are a class of optimization problems in mathematics that involve attempting to pack objects together into containers. The goal is to either pack a single container as densely as possible or pack all objects using as few containers as possible. Many of these problems can be related to real-life packaging, storage and ...
Japanese puzzle box, open. A puzzle box (also called a secret box or trick box) is a box that can be opened only by solving a puzzle. Some require only a simple move and others a series of discoveries. Modern puzzle boxes developed from furniture and jewelry boxes with secret compartments and hidden openings, known since the Renaissance.
Jigsaw puzzle. A jigsaw puzzle (with context, sometimes just jigsaw or just puzzle) is a tiling puzzle that requires the assembly of often irregularly shaped interlocking and mosaicked pieces, each of which typically has a portion of a picture. When assembled, the puzzle pieces produce a complete picture. In the 18th century, jigsaw puzzles ...