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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]
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 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 ...
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]
A scorpion wants to cross a river but cannot swim, so it asks a frog to carry it across. The frog hesitates, afraid that the scorpion might sting it, but the scorpion promises not to, pointing out that it would drown if it killed the frog in the middle of the river. The frog considers this argument sensible and agrees to transport the scorpion.
Frogger [a] is a 1981 arcade action game developed by Konami and published by Sega. [5] In North America, it was distributed by Sega/Gremlin. The object of the game is to direct five frogs to their homes by dodging traffic on a busy road, then crossing a river by jumping on floating logs and alligators.
A Hashiwokakero puzzle (left) and one of its solutions. The number of bridges connected to each "island" must match the number written on that island. Hashiwokakero (橋をかけろ Hashi o kakero; lit. "build bridges!") is a type of logic puzzle published by Nikoli. [1] It has also been published in English under the name Bridges or Chopsticks ...
A depiction of the Sanzu River in Tosa Mitsunobu 's Jūō-zu (十王図). The good can cross the river by a bridge while the evil are cast into the dragon-infested rapids. The Sanzu-no-Kawa ( 三途の川, lit. "River of Three Crossings", or the "Sanzu River") is a mythological river in Japanese Buddhist tradition similar to the Chinese concept ...