We're giving a year's subscription to Spotify Premium 🥳 to whoever submits the best (i.e., shortest, cleverest, etc.) solution to the puzzle below:

Jack and Will play a game of Connect 4. If Jack goes first, and both players randomly choose which columns to drop their discs down, what is the probability that Jack wins the game?

Send scanned solutions to [email protected] before 21st September and we'll announce the winner 🍾 shortly afterwards. If you have any questions, post them below.

If you would like to be sent a list of our statistics puzzles each week, sign up to Black Swans here.