Challenge Rules

The #CTBTcountdownchallenge requires two people to stand blindfolded facing each other while holding a cup of water. The cups represent a nuclear weapon. Within a 10 second countdown, as the pressure is increasing, both parties must decide whether they will nuke their partner.

The challenge emulates the security dilemma in a world there nuclear states are not legally constrained from testing nuclear weapons.


1. Stand ~1 meter from each other
2. Cover your eyes
3. Start a 10-second countdown
4. Before the timer hit zero, decide to “throw or not throw”

Check out the video of UBC President Santa Ono playing the game and challenging the presidents of SFU Andrew Petter, University of Toronto Meric Gertler, and McGill University Suzanne Fortier

Challenge logo 3.0