Topic: puzzle

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Can you solve the dark coin riddle?

You heard the travelers’ tales, you followed the maps, and now, you’ve finally located the dungeon containing a stash of ancient coins. The good news: the wizard who owns the castle has generously agreed to let you ha...

Universal Calendar Puzzle: Figure out the day of the week for any date ever

Learn how to calculate the day of the week for any date you can think of with this impressive mental trick and some practice. In this It's Okay to Be Smart video, Universal Calendar Puzzle, Joe Hanson demonstrates the...

A Bank of England five pound note is reconstructed from shreds, a time lapse

If you enjoy conceptual art and/or putting together puzzles, this video by British conceptual artist Martin John Callanan might inspire your next creation. Watch for 11 minutes as one Bank of England five pound note i...

A fully functioning Rubik’s Cube made from real ice

This fully functioning Rubik's Cube was made from ice by professional puzzle maker Tony Fisher... eight corner pieces and twelve edge pieces of solid ice, along with six center pieces made from ice, plastic, and metal...

An epic 33,600 piece jigsaw puzzle time lapse

In this epic nine month time lapse video, Andre F. clears his living room of furniture and turns it into a dedicated jigsaw puzzle space. The object of his diligent attention: Educa's 33,600 Piece Wild Life Puzzle... ...

Can you solve the fish riddle?

As the cargo director on the maiden voyage of the S.S. Buoyant, you’ve agreed to transport several tanks containing the last specimens of an endangered fish species to their new aquarium. Unfortunately, the boat is ba...

Turing Tumble, a DIY mechanical computer powered by marbles

The Turing Tumble, this small Pachinko-like puzzle game prototype, is also DIY mechanical computer. Programmer Paul Boswell designed the Turing complete toy to help kids (and adults) learn, see, and feel how computers...

How many nails can you balance on the head of one nail?

One large nail is securely nailed into a piece of wood. A handful of identical nails are laying on the table. How many of those loose nails can you balance on the head of that first nail? Try it, then watch knife ...

Can you solve the virus riddle?

Your research team has found a prehistoric virus preserved in the permafrost and isolated it for study. After a late night working, you’re just closing up the lab when a sudden earthquake hits and breaks all the sampl...

Can you solve the hardest logic puzzle ever created?

You've crash landed on an alien planet. The only way to get home is to give the correct artifacts to the planet's three alien overlords: Tee, Eff, and Arr. The challenge: Which alien overlord is which? You can fin...

Can you solve the counterfeit coin riddle?

You're currently locked in the dungeon by orders of the king, but as the realm’s greatest mathematician, you've been given a chance to free yourself: If you can identify a counterfeit coin, one fake coin in a group of...

Goffin’s cockatoos try to create tools to reach a treat

Are cockatoos as smart as a human 3 year old? Watch these four Goffin's cockatoos attempt to create their own tools from a twig, larchwood, cardboard, and beeswax, an experiment by researchers from the University of V...

Can you solve the airplane riddle?

Professor Fukanō, the famous scientist, has embarked on a new challenge – piloting around the world in a plane of his own design. There’s just one problem: there's not enough fuel to complete the journey. Luckily, the...

How a mathematician dissects an astonishing coincidence

True story about an adventure that befell Anne Parrish one June day in Paris. She was wandering through the old book stalls along the Seine with her husband who had been there before. He sat down at a table on the qua...

Can you solve the river crossing riddle? – TED Ed

How do three lions and three wildebeests, fleeing from a wildfire, cross over to the left bank of a crocodile-infested river to escape the flames? There's a raft! But there are a few rules that must be followed in ord...

Can bumblebees teach each other to pull a string?

This worker bumblebee has been taught that if she pulls the string, she'll be able to get to the artificial blue flower's sucrose solution center. Scientists from the Bee Behavioural and Sensory Ecology Lab at Queen M...

Can you solve the locker riddle? – TED Ed

File under factors, multiples, square numbers, prime numbers, and sequences: This classic mystery novel set up has a wonderful math puzzle twist: Your rich, eccentric uncle just passed away, and you and your 99 na...

Can you solve the frog riddle? – TED Ed

You’re stranded in a rainforest, and you’ve eaten a poisonous mushroom. To save your life, you need an antidote excreted by a certain species of frog. Unfortunately, only the female frog produces the antidote. The mal...

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