Poker Term
10大盲开池全下（10bb Open Jam）
10bb Open Jam
When the stack depth is about 10 big blinds, the player uses the aggressive strategy of open-jamming directly jamming on their first raise.
Overview
10bb Open Jam is one of the core actions of short-stack strategy in Texas Hold'em, typically seen in late tournament stages or short-stack cash game scenarios. When a player's effective stack is around 10 big blinds (bb), moving all-in (All-in) as the first raise (Open) is widely regarded as an optimal choice.
Strategy Principles
- Fold Equity and Pot Odds Balance: At 10bb, a standard preflop raise (e.g., 2.5bb) consumes a large portion of the stack and leaves almost no postflop maneuverability. Shoving maximizes fold equity while avoiding passive situations.
- Range Advantage: A typical shoving range includes strong hands (e.g., TT+, AQ+) and some speculative hands (e.g., small pairs, suited connectors), profiting from fold equity. Example ranges can be derived from GTO solvers.
- ICM Impact: In tournaments, 10bb is near the "death zone," and shoving is a common countermeasure due to blind pressure.
Applicable Scenarios
- Most effective when effective stacks are between 8-12bb.
- When in an open-raising position (e.g., UTG or CO) and no one has acted before you.
- When opponents have a tight calling range (e.g., only calling QQ+, AK), shoving can be easily profitable.
Risks and Considerations
- If opponents adjust their strategy (e.g., calling with a wider range), the EV of shoving may decrease.
- In cash games, avoid overusing this play to prevent being easily exploited by opponents.
- Not recommended if you have a significant postflop advantage.
Related Terms
- Short-Stack Strategy: The overall play system when stack size is below 20bb.
- All-in: The action of committing all remaining chips to the pot.
- Fold Equity: The probability that an opponent folds, which directly affects the profitability of a shove.