Christmas Tree puzzle

This simple game is based on Nim 7 –¬†

It is a great game for encouraging children to think and problem solve. Can they work out a winning strategy? Can they explain it? The game can be made harder by increasing the numbers … What happens if you had 12 baubles and a star? What would happen if the total was an even number?

Draw or print the tree below. Play with a partner. Each player adds 1 or 2 baubles / stars – the winner is the player who puts the last decoration on the tree.

Nim Tree

Leave a Reply