All-In Protection
全下保护
**Term: All-In Protection** A poker rule where, after a player goes all-in, the remaining players may not raise and can only call or fold, thereby protecting the all-in player from being pushed out by subsequent raises.
Context: Term article: All-In Protection
Overview
All-In Protection is an important rule in No-Limit Hold'em, designed to protect the pot equity of a player who goes all-in. When a player commits all their chips to the pot (i.e., goes all-in), other players who have not yet acted can only call or fold; they cannot re-raise. This rule prevents the all-in player from being forced out of the pot by a subsequent raise, ensuring they at least participate in the main pot.
Rule Mechanism
- Trigger Condition: A player's bet equals or exceeds their current chip stack.
- Action Restriction: Remaining players can only call (by putting in an amount equal to the all-in bet) or fold; if a player has insufficient chips, they also go all-in.
- Pot Distribution: The all-in player participates in the main pot, while other players may create side pots.
Principle and Purpose
The core of All-In Protection is fairness. Without such protection, if a player goes all-in and another player raises, the all-in player would be forced to fold because they cannot add more chips, losing their equity in the pot. This would make the all-in strategy ineffective, especially when a player intends to use an all-in to force folds or simplify decisions. All-In Protection encourages players to use the all-in move more frequently, adding variety and aggression to the game.
Common Scenarios
- Cash Games: In No-Limit Hold'em cash games, All-In Protection is the default rule. Players often use this rule to steal blinds or make value bets.
- Tournaments: All-In Protection also applies in tournaments, especially near the money bubble, where players frequently protect their tournament life with all-ins.
Example
Assume Player A has 100 chips and bets 100 all-in. Player B has 200 chips, and Player C has 50 chips. In this case:
- B can either call 100 or fold; if B calls, they compete with A for the main pot (100 + 100 = 200), and B's remaining 100 chips may go into a side pot.
- If C chooses to call, they must go all-in with 50 chips, entering the main pot (50 contributes to the main pot; note that the main pot calculation must account for C's call amount).
- No player can raise; for example, B cannot raise to 200.
Related Terms
- All-In: A player commits all their remaining chips.
- Side Pot: A pot contested only by a subset of players.
- No-Limit Hold'em: The game type where All-In Protection is most commonly applied.