Choose a board

Each board here takes on the computer at any of four levels, or two people sharing one screen. The last unfinished game of every kind is kept, so you can leave and pick it up later.

• Reversi

  Discs that turn over

  Trap a line of discs to turn them your colour; corners are forever and the last moves decide.

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• Four in a Row

  Seven columns, six rows

  Seven columns, six rows and gravity: get four discs in a line before the other side does, and keep blocking theirs.

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• Mill

  Nine men's morris

  Place your men, slide them along the lines and close mills to take the other side's pieces.

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• Dots and Boxes

  The pencil-and-paper classic

  Draw lines between dots, close boxes and draw again; the long chains at the end decide everything.

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• Draughts

  Checkers

  Diagonal steps, compulsory captures and the race to crown a king, with English or Italian rules.

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• Five in a Row

  A wide fifteen-line grid

  Place stones on a wide grid and make five in a line; open fours and forcing chains decide.

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Four computer levels

• Beginnerlooks one or two moves ahead and often plays a loose move; good for learning the rules
• Casualsees simple tactics three or four moves deep, with a little randomness
• Stronga proper search six moves deep; it punishes most mistakes
• Mastersearches as deep as its time allows, keeps what it learned between moves and solves endings exactly where it can