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Poker Glossary

Blockers

Blockers are cards in your hand that reduce the combinations of hands your opponent can hold. Holding the ace of a suit, for example, makes it less likely your opponent has the nut flush.

Blockers refine range-based decisions into specific-combo decisions. The best bluffs block the opponent’s value and calling hands while unblocking their folds — so you fire the combos that make a call least likely. The best bluff-catches do the reverse: they block the opponent’s value so a bluff is more likely.

Blockers are a tiebreaker, not a trump card. Use them to choose which of two equivalent hands to turn into a bluff or a call — but a strong blocker never overrides bad pot odds or a range that just doesn’t have enough bluffs.

Worked example

On a board of Q-J-8-5-3 with a flush possible, you decide to bluff the river. Holding the ace of the flush suit is ideal: it blocks the opponent’s nut flush, making it far less likely they can call, so that combo is a better bluff than one without the blocker.

FAQ

How do blockers help when bluffing?

Bluff with cards that block the opponent’s value and calling range while not blocking their folds — it makes a call less likely and your bluff more profitable.

Are blockers more important than pot odds?

No. Blockers break ties between similar hands; they never justify a call the pot odds reject or a bluff a balanced range can’t support.

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