Loading…
Logic, math, everyday and lateral-thinking riddles — each one paired with a step-by-step visual walkthrough of the solution, right in your browser.
Ferry a wolf, a goat and a cabbage across a river without ever leaving a predator alone with its prey.
On an island of truth-tellers and liars, one islander's claim is enough to deduce everyone's nature.
Two opposite corners are cut off. Can 31 dominoes still tile the board?
One of three switches controls a hidden bulb. Identify it with a single visit to the room.
Fill a 3×3 grid so each row and column contains 1, 2 and 3 — pure elimination.
Three piles of stones and a winning strategy hidden in binary XOR.
One guard always lies, one always tells the truth. Find the safe door with a single question.
Three boxes, every label wrong. Fix all of them by drawing just one fruit.
Two friends know only the month or the day. Their conversation reveals the date.