Alan Richmond

Tag Archive for puzzles

General Puzzles

Rubik's Cube

A man who lives on the tenth floor takes the lift down to the first floor every morning and goes to work. In the evening, when he comes back; on a rainy day, or if there are other people in the lift, he goes to his floor directly. Otherwise, he goes to the seventh floor…

Logic Puzzles

By Cmglee (Own work) [CC BY-SA 3.0 (], via Wikimedia Commons

Knaves and Knights An island is inhabited by two classes of people: knights, who make only true statements, and knaves, who make only false statements. Three inhabitants are conversing. Alfred says, “All of us are knaves.” Bert says, “Exactly one of us is a knight.” What are Alfred, Bert, and Charles? Answer Fork in the Road The…

Lateral Thinking Puzzles

Rodin's Thinker

Be prepared to think outside the box for these classic lateral thinking puzzles. Enjoy! Three Switches and Three Bulbs Three switches outside a windowless room are connected to three light bulbs inside the room. How can you determine which switch is connected to which bulb if you may enter the room only once? Answer Nutty Problem…