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'Twinkle Twinkle' printed from http://nrich.maths.org/

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This is a game for two players.

You need a one star game board and a set of four counters each.

To win, a player must place three of his/her own counters in a straight line.

To begin, each player takes turns to place one counter on an empty black spot.

Then, if no-one has yet made a line of three, play continues by tacking turns to pick one counter and move it to an empty black spot.


What moves will increase your chance of winning?

Does it matter who goes first?

Is it possible to play an 'endless' game?

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