Why bluffing works
If you only bet when you have it, observant opponents will fold every time you bet and call every time you check. Bluffs make your strong hands profitable, because opponents have to pay you off sometimes to avoid being run over. The goal is not to bluff a lot. It is to bluff in the right spots.
Five checks before you bluff
- Does your story make sense? Your bets on earlier streets should be consistent with the hand you are representing.
- Can your opponent fold? Recreational players who "just want to see it" are terrible bluff targets.
- Does the board favour you? High-card boards like favour the preflop raiser, who has more strong aces and kings.
- Do you hold blockers? Holding on a three-heart board removes the nut flush from your opponent's range.
- Is the sizing right? Bet enough to make folding attractive, but not so much that one failed bluff wrecks your session.
Semi-bluffing: the bluff with a back door
The best bluffs can still win when called. A hand like on has a flush draw and an open-ended straight draw: fifteen outs. Betting gives you two ways to win. Pure bluffs on the river have only one.
The maths of balance
If you bet the size of the pot on the river, your opponent is risking one pot to win two. They need to be right 33% of the time. So if roughly one in three of your river bets is a bluff, they cannot profit from calling or folding. The general formula for the bluff share of your betting range is:
Bluff share = bet ÷ (pot + 2 × bet)
Half-pot bet: 25% bluffs. Pot-sized bet: 33% bluffs. Twice the pot: 40% bluffs.
Bluff types worth knowing
- Continuation bet: the preflop raiser bets the flop, representing strength whatever came.
- Delayed c-bet: checking the flop and betting the turn when your opponent shows weakness.
- Probe bet: betting out of position after the preflop raiser checked the previous street.
- Float: calling a bet in position with the plan to take the pot away later.
- River overbet: a large bet on a card that completes many of your strong hands but few of your opponent's.
The most common bluffing mistakes
- Bluffing against multiple opponents. Each extra player multiplies the chance that someone has it.
- Bluffing players who have shown they will call anything.
- Giving up after one barrel when the turn card improves your story.
- Bluffing because you are frustrated. That is tilt, not strategy.
Frequently asked questions
How often should you bluff in poker?
In theory, with a pot-sized river bet you should bluff about one hand for every two value hands, which makes your opponent indifferent to calling. Against players who call too much, bluff far less.
What is a semi-bluff?
A bet with a hand that is probably behind but can improve, such as a flush draw. It wins when the opponent folds and also when the draw arrives.
Who should you not bluff?
Players who call too often, players who are not paying attention, and opponents who have already invested a large share of their stack.