Knights and knaves



         


Knights and knaves are a type of logic puzzle devised by Raymond Smullyan.

On a fictional island, all inhabitants are either knights, who always tell the truth, or knaves, who always lie. So, for example, no inhabitant can say:

"I am a knave."

The puzzles involve a visitor to the island who meets small groups of inhabitants, and must determine their type from their statements.





  View Live Article   This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License