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Poker Term

CO 100bb 3-Bet Jam

CO 100bb 3-Bet Jam

Term: CO 100bb 3-Bet Jam Preflop, a player in the CO position, after someone raises, makes a 3-bet and goes all-in directly, with an effective stack of 100 big blinds.

Position and Chips

CO (Cut-Off) is the position to the right of the dealer, with post-flop positional advantage. Effective stack of 100BB (big blind) is standard deep stack. At this depth, a jam usually represents very strong hand strength or a specific balancing strategy.

Meaning of the Action

A 3-Bet Jam refers to when, after someone opens, the CO player makes a 3-bet and goes all-in directly. Unlike a standard 3-bet, the jam eliminates post-flop decisions and transfers pressure directly to the opponent.

Applicable Scenarios

  • Value Jam: Holding premium hands like AA, KK, expecting to be called by weaker hands.
  • Balancing Jam: Mixing in some bluffs (e.g., A5s, small pairs) to prevent opponents from easily exploiting your 3-bet.
  • Anti-Steal: When the CO believes the BTN or blinds are stealing frequently, a jam can apply pressure.

Strategic Considerations

  • Opponent tendencies: If opponent's calling range is wide (e.g., TT+, AQ+), the jam has higher value; if opponent folds often, increase bluff frequency.
  • Your range: At 100BB depth, the jam range is usually polarized, consisting of strong hands and bluffs, avoiding medium-strength hands that lose value when called.
  • Risk: If called, you face a showdown for your entire stack; if opponent folds, you win the pot directly.

Notes

  • Against loose-aggressive players, the calling range may widen, so adjust frequency.
  • In tournaments, consider ICM (Independent Chip Model) impact, avoid unnecessary pre-flop jams.
  • This action is a high-variance strategy, suitable for players who are balanced and understand their opponents.

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