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The missionaries and cannibals problem, and the closely related jealous husbands problem, are classic river-crossing logic puzzles. [1] The missionaries and cannibals problem is a well-known toy problem in artificial intelligence, where it was used by Saul Amarel as an example of problem representation. [2] [3]
Wolf, goat and cabbage problem. Illuminated illustration depicting the wolf, goat and cabbage problem in the Ormesby Psalter, dating to 1250–1330. The wolf, goat and cabbage problem is a river crossing puzzle. It dates back to at least the 9th century, [1] and has entered the folklore of several cultures. [2] [3]
The two solutions with the vertical axis denoting time, s the start, f the finish and T the torch. The bridge and torch problem (also known as The Midnight Train [1] and Dangerous crossing [2]) is a logic puzzle that deals with four people, a bridge and a torch. It is in the category of river crossing puzzles, where a number of objects must ...
River crossing puzzle. A river crossing puzzle is a type of puzzle in which the object is to carry items from one river bank to another, usually in the fewest trips. The difficulty of the puzzle may arise from restrictions on which or how many items can be transported at the same time, or which or how many items may be safely left together. [1]
The South–North Water Transfer Project, also translated as the South-to-North Water Diversion Project is a multidecade infrastructure mega-project in China that ultimately aims to channel 44.8 cubic kilometers (44.8 billion cubic meters) of fresh water each year from the Yangtze River in southern China to the more arid and industrialized north through three canal systems:
400 m freestyle. Gertrude Caroline Ederle (October 23, 1905 [1] – November 30, 2003) was an American competition swimmer, Olympic champion, and world record-holder in five events. On August 6, 1926, she became the first woman to swim across the English Channel. [2] Among other nicknames, the press sometimes called her "Queen of the Waves".
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More than half of the migrants crossing the Darien come from Venezuela. More than 500,000 migrants made the treacherous crossing through the jungle-clad border in a record-setting 2023. So far ...