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Strategy · 6 min

What a 3-bet is in poker (and when to make one)

The 3-bet is one of the most profitable and most misunderstood preflop plays. I'll explain what it is, why it works and how to choose your range — with clear examples.

If you're new to poker, you've surely heard “I 3-bet him” and nodded along without really knowing what it meant. Relax: it's simpler than it sounds, and understanding it well is one of the things that improves your preflop game fastest.

The definition, no fluff

A 3-bet is the third bet of a round. Preflop the count goes like this: the big blind is the first bet (the “1-bet”), when someone raises it's the second (the “raise” or 2-bet), and when you raise again on top of that raise, that's the 3-bet.

Example at a $1/$2 table:

  • The big blind posts $2 (1-bet).
  • A player on the button raises to $6 (2-bet / raise).
  • You, in the big blind, raise to $20. That's a 3-bet.

Why 3-bet instead of just calling?

  • For value: with strong hands (AA, KK, AK) you want to put money in the pot while you're ahead.
  • As a bluff / semibluff: with hands like A5s or KJs you apply pressure to make your opponent fold and take the pot without a fight, or you build a disguised hand.
  • To take the initiative: whoever makes the last preflop raise usually controls the flop with a continuation bet.

Your 3-bet range: the key idea

A good 3-bet range is polarized: it combines your best hands (value) with a few selected bluffs, and leaves out the “mediocre” hands that play better just by calling. You don't 3-bet with QJo, but you do with AA and, as a bluff, with A4s.

💡 Against a button open, a typical value 3-bet range from the blind is something like QQ+, AK, plus a few suited bluffs like A5s-A2s. Position matters a lot: you adjust based on who raised and from where.

Common mistakes when starting out

  • 3-betting only with premium hands (you become predictable and nobody pays you off).
  • 3-betting with hands that would call better (KJo, medium pairs) and getting trapped.
  • Using an erratic sizing: with a defined range, the sizing should be consistent.

Mastering the 3-bet is a matter of practicing it until it's automatic. In EVolve you have a dedicated drill to decide your 3-bet range hand by hand, with instant feedback.

🎯 Practice 3-bet spots

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