A fruitholder (the Challenger) may declare a Duel with an adjacent fruitholder (the Challenged). Any pair of fruitholders may not Duel with each other more than once per move.

When the Duel's been declared, they alternately spend a random (1 to 10) amount of fruit, starting with the Challenger, until one loses by having non-Positive fruit. A Player may announce what their current minimum is and will automatically concede a Duel (and not start one) if below that minimum.

A Duel is won by neither losing nor conceding.