Full explanation — Check-Raise
A check-raise is a potent poker maneuver where a player first checks their turn to act, then re-raises after an opponent makes a bet. This deceptive and aggressive play can serve multiple strategic purposes. It can be used for immense value with a monster hand, trapping an opponent who might otherwise have checked behind, or it can be a highly effective bluff, representing immense strength and forcing folds from marginal hands. The effectiveness of a check-raise often hinges on board texture, opponent tendencies, and your table image, conveying either a nuts hand or undeniable aggression.