Welcome back to Seniorhelpline' Riddle of the Week. We are currently in the middle of a series of knights and knaves puzzles, which take place on an island with two types of people: knights, who always tell the truth, and knaves, who always lie.
Except this week we are setting sail for a new island. On this new island, apparently part of an archipelago, there are three types of people: knights, who always tell the truth, knaves, who always lie, and spies, who can lie or tell the truth at will.
Let's see if we can keep these spies from thwarting our ability to get to the truth of the matter.
On the island of knights and knaves and spies, you are approached by three people wearing different colored clothes. You know that one is a knight, one is a knave, and one is a spy. They speak in the following order:
The man wearing blue says, "I am a knight."
The man wearing red says, "He speaks the truth."
The man wearing green says, "I am a spy."
Who is the knight, who is the knave, and who is the spy?
Similar to a previous knights and knaves problem, the first step is to pick a statement, assume it is true, and see if you can assign an identity to everyone without any contradictions.
Once you determine the identities of these three mysterious individuals, check the solution here.
*See all of our riddles here.