# Articles on Puzzles

## Do gamers behave the way game theory predicts they should?

Watching how people play a game against a computer opponent can help identify how humans use – or don't use – game theory principles to make decisions.

Let's say you want the perfect mix of friends and strangers at your next party. Mathematicians have been working on a version of this problem for nearly a century, and the answer is complicated.

## Lions and lambs: can you solve this classic game theory puzzle?

Put a lamb on an island of lions and they'll eat it – or will they?

## Your guide to solving the next online viral maths problem

There's a reason why some people get different answers to those frustrating viral maths problems. You need to learn how to "read" the maths.

## Remembering Bill Tutte: another brilliant codebreaker from World War II

He was one of the brilliant mathematical geniuses who helped crack the Nazi codes, but few have ever heard of his name. So who was Bill Tutte?

It could be you.

## How to crack British intelligence service’s devilish Christmas puzzle

Have you got the keen eye and quizzical mind of a professional spy? Let's find out ...

## How to solve a Rubik’s cube in five seconds

Don't worry – there are only 43,252,003,274,489,856,000 configurations.

## Don’t freak if you can’t solve a math problem that’s gone viral

People shouldn't let these tricky puzzlers reinforce their misguided notion that they stink at math.

## It’s often the puzzles that baffle that go viral

Have you heard the one about Cheryl's birthday? It's the latest puzzle that's baffling people across the world.

## Puzzles improve spatial skills in children

Children playing with puzzles between the ages of 26 and 46 months of age display better spatial skills at the age of 54…

## Good at Sudoku? Here’s some you’ll never complete

Last month, a team led by Gary McGuire from University College Dublin in Ireland made an announcement: they had proven you can’t have a solvable Sudoku puzzle with less than 17 numbers already filled in…