About Dots & Boxes

Dots and boxes was first described by the French mathematician Edouard Lucas in 1889, and it has been scribbled in the back of school notebooks ever since. It is also called the dot game, boxes or squares. The rules fit on a postcard, yet the endgame has enough depth to have been studied by mathematicians.

This version is played on a grid of 5 by 5 dots, which makes 16 boxes. One player is cyan and the other pink. Each turn you draw one horizontal or vertical line between two adjacent dots. Completing a box scores a point and gives you another move, which you must take, and a single line can finish two boxes at once.

The game ends when all 40 lines are drawn and every box has an owner. With 16 boxes, a result of 8 each is possible and counts as a draw. You have 45 seconds per move and most games last about four minutes. It suits players who enjoy quiet, counting-based strategy more than fast reflexes.

How to play Dots & Boxes

The aim is to own more boxes than your opponent when the grid is full.
The board is a 5 by 5 grid of dots, forming 16 possible boxes. Two players take turns.
On your turn, draw one line between two dots that are next to each other, horizontally or vertically. Diagonal lines are not allowed.
If your line is the fourth side of a box, the box is yours and you score one point.
After completing a box you must move again. One line that closes two boxes scores two points and still gives just one extra move.
If your line does not complete a box, the turn passes to your opponent. Each move has a 45-second limit.
When every line has been drawn, the player with more boxes wins. Eight boxes each is a draw.

Rules checked against the game on 2026-09-01.

Dots & Boxes tips and strategy

Never draw the third side of a box unless you have no choice. A box with three sides is a free point for whoever moves next.
The opening is about running out of safe moves. Count how many lines can still be drawn without creating a three-sided box, and try to leave your opponent the last unsafe move.
Learn the double-cross. When you are taking a chain of boxes, stop two short and leave the last pair for your opponent. They get two boxes but must then open the next chain for you.
Make chains long. A chain of three or more boxes rewards the player in control, while short chains of one or two give the control player little, so the side that is losing the count should break the board into small pieces.
When forced to give something away, open the shortest chain on the board first and save the long ones for later.

Dots & Boxes FAQ

Do you have to take a box in dots and boxes?

No. You are never forced to draw the line that completes a box. Declining boxes on purpose is the heart of advanced play, because leaving two boxes at the end of a chain can force your opponent to open a longer one.

Do you get another turn after completing a box?

Yes, and it is compulsory. Each time your line closes at least one box, you must draw another line. This is why opening a long chain is so costly: your opponent can take every box in it in one turn.

What grid size is used here?

The board is 5 by 5 dots, which gives 16 boxes and 40 lines. It is large enough for chains and sacrifices to matter but short enough to finish in a few minutes.

Can dots and boxes end in a tie?

It can on this board. There are 16 boxes, so each player can finish with 8, and that is recorded as a draw. Grids with an odd number of boxes cannot be tied, which is why some players prefer them.

What is the chain rule in dots and boxes?

It is a counting guide for who will be forced to open the first long chain. In short, you try to make the number of long chains match the parity that favours you. Beginners can ignore the maths and simply avoid drawing third sides.

Who invented dots and boxes?

The game was published in 1889 by Edouard Lucas, the French mathematician also known for the Tower of Hanoi puzzle. He called it la pipopipette. It has since spread worldwide as a classroom and travel game.

How many players do I need for Dots & Boxes?

Dots & Boxes supports exactly 2 players. If a full table of real people isn't ready when you queue, MultiplayerHub fills the empty seats with bots instantly so the match starts without waiting.

Do I need to download anything or sign up to play Dots & Boxes?

No. Dots & Boxes runs entirely in your browser tab — no app install, no account, no email required. Pick a name and you're matched within seconds.

Is Dots & Boxes really free?

Yes — Dots & Boxes and every other game on MultiplayerHub is free to play, supported by ads rather than a paywall or loot boxes.

Can I play Dots & Boxes with a specific friend instead of strangers?

Create a private room from the Dots & Boxes page to get a shareable room code, or enter a code a friend already sent you to jump straight into their table.