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Traffic Lights

The game uses a 3x3 square board. 2 players take turns to play, either placing a red on an empty square, or changing a red to orange, or orange to green. The player who forms 3 of 1 colour in a line wins.

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Yih or Luk Tsut K'i or Three Men's Morris

Some puzzles requiring no knowledge of knot theory, just a careful inspection of the patterns. A glimpse of the classification of knots and a little about prime knots, crossing numbers and knot arithmetic.

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Lambs and Tigers

Investigations based on an Indian game.

First Connect Three

Stage: 2 and 3 Challenge Level: Challenge Level:2 Challenge Level:2

Are some numbers part of more lines of three than others? This might affect whether we aim for them or not.
How can you get $1$ by throwing the two dice? How many ways are there altogether?
How can you get $12$ by throwing two dice?
It might be useful to look at all the numbers on the grid in turn in this way.