Bluff
A bluff is a bet or raise with a weak hand that aims to make better hands fold. It wins when your opponent gives up the pot.
A bluff is a bet or raise made with a hand that is probably not the best, in the hope that your opponent will fold a better one. A bluff does not need to win at showdown; it wins only when everyone else gives up.
A bet with a weak hand that still has a real chance to improve is a different tool, called a semi-bluff. A "pure" bluff usually happens on the river, when there are no cards left to come.
The math behind a bluff
A bluff only needs to work a certain percentage of the time to break even. The formula is:
Required fold rate = bet ÷ (pot + bet)
| Bet size | Must work at least |
|---|---|
| Half pot (50 into 100) | 33% |
| Three-quarter pot (75 into 100) | 43% |
| Pot size (100 into 100) | 50% |
If you believe your opponent folds more often than the number in the table, the bluff has positive expected value, even though it will sometimes be called.
Example hand
You hold J♠ T♠ and the board runs out A♥ 8♠ 3♠ 5♦ 2♥. Your flush draw missed and you have jack high, which almost never wins at showdown. The pot is 100 chips and your opponent checks to you.
If you bet 50, you need them to fold at least 33% of the time. Think about their range: they checked the flop and turn, so they rarely hold a strong ace. Hands like 8♣ 7♣ or 6♦ 6♣ are likely to fold to a bet. If you judge that they fold more than a third of the time, the bluff is profitable. Checking guarantees you lose the pot.
Good bluffing spots
- Your story makes sense. Your earlier bets should be consistent with the strong hand you are representing.
- Your opponent can fold. Bluffing works against players who fold, not against those who call everything.
- The board favours your range. Scary cards that complete draws or overcards are better bluffing chances.
- Few opponents. Bluffing one player is far easier than bluffing three.
- Blockers. Holding a card that your opponent needs for a strong hand makes it less likely they have it.
Common mistakes
- Bluffing players who rarely fold.
- Bluffing too often because one bluff worked; your table image changes quickly.
- Giving up on all bluffs. If you never bluff, opponents can fold to every bet you make and your value bets earn less.
- Bluffing just to avoid admitting a hand is lost. Every bluff should have a reason.
Frequently asked questions
How often should you bluff in poker?
It depends on your opponents and bet sizing. In balanced strategies, larger bets allow more bluffs, but against players who rarely fold you should bluff much less.
What is the difference between a bluff and a semi-bluff?
A pure bluff has little or no chance to win if called. A semi-bluff has a weak hand now but a real chance to improve, such as a flush or straight draw.
Is bluffing necessary to win at poker?
Bluffing is not required to beat every game, but some bluffing keeps opponents from folding every time you bet, which makes your strong hands earn more.
Related poker terms
- Semi-Bluff — A semi-bluff is a bet or raise with a drawing hand that is behind now but can improve. It wins if opponents fold or if you hit your draw.
- Fold Equity — Fold equity is the extra value you gain from the chance your opponent folds to your bet or raise, winning the pot without a showdown.
- Value Bet — A value bet is a bet made with a strong hand that you want worse hands to call. It is the main way winning players build pots they expect to win.
- Table Image — Table image is how your opponents perceive your playing style, based on what they have seen you do. It changes how they react to your bets.
- Expected Value (EV) — Expected value (EV) is the average amount a poker decision wins or loses if repeated many times. Good players choose the option with the highest EV.