Games

This is a game for two players.

The object of the game: Be the person who reaches the target of 23.

How to Play:

  • Players take it in turns to add 1, 2, 3 or 4 to the total.
  • The player who reaches the target of 23 wins the game.

Here’s an example of how a game might go:

  • I choose 4
  • You choose 2 so the total is now 6 (4 + 2 = 6)
  • I choose 3 so the total is now 9 (6 + 3 = 9)
  • You choose 1 so the total is now 10 (9 + 1 = 10)
  • I choose 4 so the total is now 14 (10 + 4 = 14)
  • You choose 3 so the total is now 17 (14 + 3 = 17)
  • I choose 2 so the total is now 19 (17 + 2 = 19)
  • You choose 4 so the total is now 23, and you have won!

Variations:

  • Once you have a winning strategy, change the target from 23 to a different total.
    • Can you adapt your winning strategy?
  • Now try changing the range of numbers you can add.
    • Can you adapt your strategy again?
    • Is it always best to go first?

Source: NRichmaths.org