How to Bluff in Poker: Five Checks Before Every Bluff
A bluff works when the opponent folds often enough to pay for the times they call: a half-pot bluff must win 33.3% of the time, a pot-sized bluff 50%. Before you fire, run five checks: an opponent who can fold, a line that tells a believable story, a price you can afford, a hand with no showdown value and the right blockers, and, before the river, outs when called.
A missed flush draw on the river
Blind against blind, you bet the flop and the turn with K♣5♣ on Q♣ 9♦ 6♣ 2♠, and the big blind calls both. The river A♦ misses your flush, and you act first. Check, bet 33% or bet 120% of the pot?
See the answer
The price. A bet of 120% of the pot has to make the big blind fold 54.5% of the time.
The hand. King-high with a missed flush draw has almost no showdown value: checking gives up the pot most of the time.
The decision. The author's answer is the 120% bet: the big blind called twice without raising, so its range is capped, full of medium pairs and short of very strong hands; your K♣ removes some of its best calls, such as A‑K and K‑Q, and a polarized overbet puts maximum pressure on the rest.
The five checks
- Can the opponent fold? A bluff only works against a player who folds. Against a player who calls everything, bluff less and value bet your strong hands: see exploitative poker.
- Does your line tell a story? The bet has to represent hands your range really holds on this board; that is range advantage and nut advantage.
- Can you afford the price? The bigger the bet, the more often it must work (table below).
- Is it the right hand? Bluff with hands that cannot win at showdown and that hold the cards the opponent needs to call: river bluffs with blockers.
- Does it still have outs? Before the river, the best bluffs are draws with real equity, which win when the opponent folds and when they hit: that is the semi-bluff.
| Bet | Fold rate needed |
|---|---|
| 33% of the pot | 24.8% |
| half the pot | 33.3% |
| three quarters of the pot | 42.9% |
| the pot | 50% |
| 120% of the pot | 54.5% |
Every line is bet ÷ (pot + bet); the details are in how often a bluff must work.
How many bluffs a balanced river range can hold for each size is the bluff to value ratio.
Three mistakes that make bluffs lose
- Bluffing two opponents. Both have to fold: if each folds 50% of the time and their decisions are independent, both fold only 25% of the time.
- Bluffing with showdown value. A hand that wins at showdown some of the time, like a bluff‑catcher, should check; bluffing turns it into a hand that only wins when the opponent folds.
- A bet that tells no story. Overbetting a board where your range holds few strong hands makes the bluff easy to call.
Keep going
- The hand that catches bluffs: river bluff‑catcher.
- How the caller defends: minimum defense frequency.
Sources
- Fold rates computed as bet ÷ (pot + bet); two independent folds at 50% each: 0.5 × 0.5.