Social Sciences

# How To Predict Every Tic Tac Toe Move, Every Time

News: The Curiosity Podcast is here! Subscribe on iTunes, Stitcher, Google Play Music, SoundCloud and RSS.

Is it really possible to predict every move of tic tac toe before it even starts? According to mathematics legend Martin Gardner, it is—and it's really simple. Watch the video below to find out how.

#### Predict Every Tic Tac Toe Move Before It's Made

You just need to remember three three-letter words.

##### Predict EVERY Tic Tac Toe Move Before It's Made!
Scam School – Scam School

#### Martin Gardner's Hexatetraflexagon

To honor Gardner after his death, James Grime created a psychic toy.

##### A Flexagon for Martin Gardner
singingbanana – singingbanana

#### Another Martin Gardner Card Trick

You just need a deck of cards to try this trick out at home.

##### Beautiful Card Trick - Numberphile
Numberphile – Numberphile

### Key Facts In This Video

1. Watch a mathematical card trick that requires 27 cards and no sleight of hand: 00:26

2. If you deal 27 cards in three piles three times, they will always end up in this arrangement: 04:07

3. A ternary number system uses the digits 0, 1, and 2. 07:27