follow suit

Follow suit is a rule requiring a player to play a card of the led suit when possible. If the opening player leads hearts, every subsequent player who holds at least one heart must play a heart. Only when a player has no cards of the led suit may they play a card of another suit — including trump if the game uses it.

This constraint is central to trick-taking games because it structures both strategy and information. Strategically, follow-suit rules make hand composition matter in specific ways: a hand with cards distributed evenly across suits is flexible but shallow, while a hand concentrated in one suit offers power in that suit and creates voids (suits with no cards) that unlock trump or discard opportunities in others. Deliberately emptying a suit from your hand — void creation — is a fundamental tactic that only exists because follow-suit rules make being void in a suit strategically valuable.

The information dimension is as important. When a player fails to follow suit, every other player at the table learns that player has no cards in that suit. This inference is free information — it reveals something about the player’s hand composition that narrows the space of possible holdings. Skilled players track these signals across multiple tricks, building a more precise picture of who holds what. Games without follow-suit rules (free-play games) trade this inference structure for greater freedom of choice, producing a different strategic texture.