CO位3Bet（3Bet from CO）

Position and Meaning

CO (Cut Off) is the position to the right of the button, belonging to late position. When a player in the CO position re-raises a raise from an early or middle position player, it is called a "CO 3Bet." This action is typically used to isolate weaker opponents (those in positional disadvantage) or to extract value, but it can also be a bluff.

Purpose and Strategy

• Value: When holding strong hands (e.g., QQ+, AK), 3Bet to increase the pot and force opponents to fold or enter a disadvantageous postflop situation.
• Isolation: The opponent's raising range may be wide. The CO uses a tighter range to re-raise, forcing earlier players to fold, thereby entering a heads-up pot with positional advantage.
• Bluff: Use weak or medium hands (e.g., A5s, JT) to 3Bet, leveraging a tight-aggressive image to steal the pot. However, use this cautiously in low-stakes games as opponents tend to call more.

Typical Range (Example)

Facing an UTG open, the CO's value 3Bet range is typically TT+, AQ+; the bluff range can include hands like A5s, KQo, etc. Note that the range should be adjusted based on the opponent: use a narrower value range against tight players, and widen bluff frequency against loose players.

Subsequent Actions

• If the opponent 4Bets, decide to call, re-raise, or fold based on your hand strength.
• If the opponent calls, the CO has positional advantage postflop. Use a continuation bet (c-bet) strategy on the flop to attack the opponent's wide range.
• Avoid folding too often after 3Betting with weak hands, as that can be exploited by observant opponents.