#optical
49 riddles foundA woman turns off the light in her bedroom and manages to get into bed before the room is dark. The bed is 5 meters from the light…
The music stopped. A woman died. What happened?
Three men stand in a line. Each has a hat placed on their head — either black or white — from a set of three black and two white h…
Every Sunday a man goes to the hospital and asks to see his brother. The nurses let him in even though visiting hours are over. Wh…
In the red house there are red bricks. In the blue house there are blue bricks. What is in the greenhouse?
You are a bus driver. At the first stop, five people get on. At the second, three get off and seven get on. At the third, two get …
A blind beggar had a brother who died. But the dead man had no brother. How is this possible?
There was no moon and no artificial lights, yet the night sky was bright enough to read a book outdoors. What caused the brightnes…
During a dry windstorm at night, the air around power lines began to glow blue and purple. Nothing was on fire. What was happening…
A woman lights a candle every evening but it never gets shorter. Is the flame real?
A man puts on glasses every morning, but they don't help him see better. Does he have perfect vision?
You are outside a room with three light switches. Inside the room there are three light bulbs. You can only enter the room once. H…
A candle has been lighting a room for over ten years without being replaced. Is it a special type of wax?
A photographer takes a picture of a completely dark room with no flash and no light source. When the photo is developed, you can c…
Four people need to cross a dark bridge at night with only one flashlight. The bridge can hold at most two people at a time. Perso…
A lighthouse stands tall but has never shone a light. How is this possible?
A man lives in a house with four walls, each facing south. A bear walks past the window. What color is the bear?
A man enters a dark cabin with a single match. There is a candle, an oil lamp, and a fireplace. Which does he light first?
A photographer spends hours in a completely dark room every day. Is there something wrong with the lights?
A satellite sends a signal to Earth. The signal travels at the speed of light, yet the message arrives before it was sent. Is this…
A spy writes a message that nobody can read. She uses no code or cipher. The recipient reads it easily. How?
A lighthouse keeper is found dead. The lighthouse light was off all night and a ship crashed on the rocks. But the keeper didn't f…
A teacher writes the correct answer on the board, but every student in the class copies it down wrong. The teacher planned this. W…
A witness at a trial says she saw the crime happen with her own eyes, from ten meters away, in broad daylight. The defendant is pr…
A man can read every book in the library except one. That book has his name on the cover. Why can he not read it?
A scientist weighs an empty sealed box on a precision scale. She then adds nothing to the box — puts nothing inside and takes noth…
A thief breaks into a house and finds a safe. The safe is unlocked. He opens it, looks inside, closes it, and leaves without takin…
A man watching the night sky notices something moving faster than the speed of light. He is not mistaken, there is no error, and i…
A man reads a newspaper headline, puts the paper down, and immediately goes home and kills himself. He had never met the people me…
A man reads a newspaper and immediately goes blind. He is not ill, and nothing is wrong with his eyes. Why?
A man hears a song on the radio, pulls over his car, and shoots himself. Why?
A woman looks at a clock on her wall and it changes her life forever. The clock has not moved in years. Is she happy?
A man cannot read, yet he makes a living writing books. Is he a fraud?
A man enters a completely dark room and instantly knows exactly how many people are in it. He is not psychic, there are no sounds,…
A man is sitting in a completely dark room. There is no lamp, no candle, no flashlight, and no other source of light. Yet he is re…
A man sees his shadow and is terrified. He immediately calls the police. Why?
A man reads a newspaper and immediately goes blind. He is not startled, not sick, and the newspaper is perfectly normal. Why did h…
The music stops and a woman dies. Why?
I am always in front of you but can never be seen. What am I?
A woman cannot read her own name even though she is perfectly literate and her name is written clearly in large letters right in f…
A newspaper has been delivered to a house every day for thirty years. No one in the house has ever read it. The residents are not …
A woman looked in a mirror and saw the future. She was not psychic and the mirror had no special powers. How?
A man possessed a photograph of himself taken before cameras were invented. The photograph was genuine and he had not travelled th…
An animal cast no shadow at noon on a bright sunny day in an open field. The animal was real and the sun was shining. How?
A man reads a newspaper and immediately goes blind. He is not ill and nothing is wrong with his eyes. Why?
A man attends a wedding he was not invited to. The bride and groom are delighted to see him. Security does not remove him. Why?
A man checks into a hotel room. He goes to his room, opens the door, walks in and immediately checks out and demands a refund. He …
You have two ropes that each burn completely in exactly one hour, but they burn unevenly. How do you measure exactly 45 minutes us…
A man wakes up, looks at the clock in the mirror, and thinks it is 6:10. He decides to sleep more. He wakes again two hours later …