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About Dots and Boxes

Dots and Boxes is the paper game everyone played in the back of an exercise book: a grid of dots, players taking turns drawing one line between two adjacent dots, and whoever completes the fourth side of a box claims it and goes again.

It looks trivial and isn't. The end game is about chains — long runs of boxes that whoever is forced to open must hand to their opponent — and playing it well means deliberately sacrificing boxes to control who opens what.

How to play Dots and Boxes

Draw a line
Click and drag between two adjacent dots
Touch
Tap between two dots
  1. Take turns drawing a single line between adjacent dots.
  2. Completing the fourth side of a box claims it and grants another turn.
  3. Claimed boxes chain — completing several in a row is one turn.
  4. The player with the most boxes when the grid is full wins.

Dots and Boxes tips

  • Never draw the third side of a box unless you have to — it hands your opponent the box and another turn.
  • In the endgame, count the chains. Whoever is forced to open the first long chain usually loses.
  • Deliberately give away a two-box chain to keep control of who opens the long ones — the double-cross.
  • Aim for an odd or even number of chains depending on who moves first; that parity decides most games.

Dots and Boxes — questions

What is the double-cross strategy in Dots and Boxes?

Declining to take the last two boxes of a chain, so your opponent is forced to open the next one instead. Giving up two boxes to control who opens a chain of ten is usually a winning trade.

Is Dots and Boxes solved?

Small grids are, and the theory around chains and parity is well developed. In practice, understanding chain control beats almost any opponent who is just taking boxes greedily.

Does it work on a phone?

Yes — tap between dots. Nothing to install.

Categories
Casual & Hyper-Casual
Platform
Web browser — desktop, mobile, and Chromebook
Cost
Free, no download or sign-up