How to always win at Dots and Boxes - Numberphile?

Always win at Dots and Boxes by making smart moves that trap your opponent, like setting up a puzzle they can’t solve.

Imagine you're playing with a friend on paper, drawing lines between dots to make squares. When someone completes a square, they get to draw another line right away! That’s the fun part, but it also means you can keep going and go even further than your friend if you plan well.

Here's the trick: when there are only two lines left in a square, you make sure you're the one who draws the last line. That way, you get to take that square, and then you draw another line, giving you more chances to win!

Think of it like this: if you’re playing with blocks and your friend is trying to stack them, but you know exactly when to add the final block so you can build even higher, that's what you're doing in Dots and Boxes.

So remember, always look for the two-line boxes. If you find one, take it! That’s how you win every time, no magic, just smart thinking.