3bet

A 3bet is a re-raise after an open-raise preflop. The name comes from the count of bets: the big blind is the 1st bet, the open-raise is the 2nd, and the re-raise is the 3rd.

Detailed Explanation

The 3bet is one of the most important preflop offensive tools. Compared to a flat call, a 3bet actively builds a bigger pot and a clearer range advantage. 3bets fall into three rough categories:

• Value 3bet: build a big pot with strong hands (QQ+, AK), expecting to extract value from the opponent's broadways and middle pairs
• Bluff 3bet: use marginal hands with blocker effects (A5s, KQs), hoping the opponent folds preflop or struggles postflop because of low SPR
• Squeeze 3bet: a 3bet after the open and at least one flat-caller, applying additional pressure on the caller

Standard IP sizing is about 3× the open; OOP is about 4×. Adjust based on board texture and opponent tendencies.

Common Use Cases

• vs an EP open: tighten the 3bet range (mostly value)
• vs an LP open: widen the 3bet range (mix of value and bluffs)
• Defending from the blinds: 3bet compensates for the positional disadvantage better than a flat call

Common Mistakes

• Only 3betting AA/KK: too narrow, too readable, easy to exploit
• Always cbetting after a 3bet: post-3bet continuation bet frequency should depend on board texture and opponent range — it isn't automatic