Reading your opponent
What is a bluff in poker
A bluff is a bet made with a hand that would lose if the cards were shown, so that your opponent folds a better one and leaves you the pot. It works for one reason: nobody sees anyone else's cards. It isn't cheating: it's playing with incomplete information, and you decide it by counting, not by gut feeling.
Below it's laid out with real cards: why bluffing exists, what it takes for a bluff to pay off, why the same bluff works against one opponent and not another, and what to do when the flop misses everyone. The chips aren't worth money: they measure the decision.
Why bluffing exists
If poker were played with the cards face up, there would be no decisions: everyone would know who wins, and nobody would bet without the best hand. Because each player sees only their own cards, a bet says something but never everything. The bluff lives in that gap: your bet tells a story your opponent can only find out about by calling.
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What you see
Your two cards and the board. You know for certain that your hand is weak.
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6 Your bet
What they see
Their two cards, the board and your bet. Not your cards.
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? ?
What nobody sees
What the other player holds. Every bluff comes out of that gap, and so does every bluff that doesn't pay off.
A bluff, counted
You open with the queen and eight of hearts and your opponent calls. The flop gives you no pair and no draw: on this board your queen high loses to almost everything. They check. There are twelve chips in the pot and you're thinking of betting six, half the pot.
The board
You
What they could hold
You've already set aside the hands with a pair: with those they would have bet instead of checking. Five hands are left, none with a pair, and all five beat you at showdown. What changes is what each one does if you bet.
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The bluff pays off
Opponent A
Calls with ace high or better
- Calls
- Calls
- Folds
- Folds
- Folds
3 fold · 2 call
Against opponent A, three fold and two call. Each fold makes up for two calls: three make up for six, and only two call. The bluff pays off.
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The bluff doesn't pay off
Opponent B
Calls with king high or better
- Calls
- Calls
- Calls
- Calls
- Folds
1 fold · 4 call
Against opponent B, one folds and four call. One makes up for two, and four call. Same cards, same bet, and here the bluff loses.
Notice that the bluff against opponent A can still go wrong: if they hold ace-jack, they call and you lose your six chips. That changes nothing. A decision is judged by the count you had, not by the cards they turned over.
The math of a bluff
A bluff risks your bet to win what's already in the pot. If they fold, you take the pot; if they call, you lose the bet. So all you need to know is how often it has to work to break even, and that depends on the size of the bet.
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A third of the pot
4 Your betThey need to fold
One time in four
You risk 4 to win 12. It only has to work once in every four tries.
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Half the pot
6 Your betThey need to fold
One time in three
You risk 6 to win 12. Each fold makes up for two calls.
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The size of the pot
12 Your betThey need to fold
One time in two
You risk 12 to win 12. They have to fold as often as they call.
When the flop misses everyone
The natural moment for a bluff is a flop that helps nobody: seven, four and two of different suits, for instance. Almost none of the hands people play connect with it, so much of their list would fold to a bet. But "the flop missed" isn't enough: what decides is their list.
A dry flop
A flop like that is called dry: mixed suits and ranks far apart, nothing to make a flush or a straight with, or draw to one. One with two cards of a suit or three connected ranks is called wet, and there checking gives your opponent a free card that may help them.
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1
Against an opponent who plays lots of hands
Their list is full of random cards that pair nothing. Many fold, few call: betting pays off.
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2
Against an opponent who only plays high cards and pairs
Their pairs of nines and up all call. Three fold, seven call: even on a dry flop, betting doesn't pay off.
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3
When you hold a small pair
If you bet, exactly the hands you beat fold and the ones that beat you call. Sometimes it pays to check on purpose and let them bet on the next street.
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4
When they're the one betting
Their bet doesn't have to be a bluff. Ask what they would bet with: if all of it beats you, fold, suspicious or not.
The semi-bluff
Betting with a draw, say four hearts waiting for the fifth, isn't a pure bluff: if they fold, you take the pot; if they call, you still have outs that complete your hand. That's two ways to win instead of one, which is why a draw is a better candidate to bet than a hand with nothing.
Four hearts, and two cards to come
You
What a bluff isn't
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It isn't cheating
It's within the rules. Betting whatever you like is every player's right, and your opponent knows that when they sit down.
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It isn't read on a face
Nobody guesses two cards by looking at someone. What you can do is work out what they would hold, given how they play.
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It isn't about nerve
A bluff is no braver than a fold. It's a tool that sometimes pays off and sometimes doesn't, and the count tells you which.
Path 15 · 5 lessons · 35 min
When nobody hits
In the course
Bluffing, played
The bluff is first counted in path 13, in "The counted bluff". Later, path 15 is given over entirely to flops that miss. Getting there takes reading a hand and a list of hands, and the course teaches both first, in order.
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8 min
The counted bluff Path 13
You will bet with nothing only when their list has enough hands that fold.
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7 min
A flop that misses
You will count which part of his list would fold and beat you, and bluff when it pays, as in the thirteenth path.
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7 min
Two lists, the same bet
You will see how the same bet depends on the list of the player who calls.
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7 min
Checking on purpose
You will know when it pays to check with a pair so that he bets.
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6 min
When he bets
You will read his bet through his rule, and call or fold with the price count.
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8 min
Whether he checks or bets
You will decide the same flop twice: when he checks and when he bets.
Frequently asked questions
What does bluffing mean in poker?
It means betting with a hand that would lose at showdown, so that your opponent folds. Betting with a draw that hasn't come in yet is a semi-bluff. Both work only because neither player can see the other's cards.
When should you bluff?
When enough of their hands fold. With a half-pot bet, each fold makes up for two calls, so the bluff pays off if the hands that call are fewer than twice the hands that fold. If you have no idea what they could hold, you have nothing to count.
What is a semi-bluff?
It's a bet with a draw, a hand that's halfway there, such as four cards of one suit. If your opponent folds, you win the pot; if they call, the card that completes your hand can still come. It has two ways to work, and a pure bluff has one.
How can you tell if someone is bluffing?
You can't, and nobody can by reading faces. What you can do is ask which hands they would bet with, given how they play, and count how many of them you beat. If all of them beat you, fold even if you're suspicious; if you beat enough of them, call.
Is bluffing cheating?
No. It's within the rules: every player bets what they like with the cards they hold, and everyone knows that when they sit down. Cheating would be seeing someone else's cards or marking the deck. The bluff exists precisely because nobody sees them.
Cards first. The bluff comes later.
To count how many hands on their list would fold, you first need to read a hand and know what beats what. The course starts with the cards and gets to the bluff in path 13, "Deciding without seeing the end".
First lesson · 6 min The cards Every card has two facts: rank and suit. You'll learn to read both, and which one says which card is worth more. Play nowNo sign-up · No money · In your browser
