Twinkle twinkle

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 taking turns to pick one counter and move it to an empty black spot.

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What moves will increase your chance of winning?

Does it matter who goes first?

Is it possible to play an 'endless' game?

Printable NRICH Roadshow resource.