You may also like

problem icon

Have You Got It?

Can you explain the strategy for winning this game with any target?

problem icon

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.

problem icon

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.

Got It

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

Try to work out the 'stepping stones' that you must 'land on' on your way to the target?

Alter the settings on the game to have a lower target and a shorter range of numbers (e.g. a target of $10$ using the numbers $1$ and $2$). As you play, note down the running totals to refer back to later.