Poker Term

小盲翻前单调下注-弃牌（SB Preflop Bet-Fold Monotone）

A simple strategy where the small blind uses a fixed bet size preflop and folds to a re-raise.

Overview

SB Preflop Bet-Fold Monotone is a simplified preflop strategy, commonly used by beginner players or in specific opponent scenarios. The core of this strategy is that the small blind (SB) always bets the same amount preflop (typically a standard raise, e.g., 2.5-3 big blinds) and unconditionally folds to any re-raise from an opponent. Because the bet size does not adjust based on hand strength or opponent tendencies, it is called "monotone."

Applicable Scenarios

  • Against tight-passive players, leveraging position and stealing blinds.
  • In deep stack or low pot odds situations to reduce decision-making burden.
  • As a short-term countermeasure to avoid complex postflop confrontations.

Pros and Cons

Pros

  • Simple to execute, reducing preflop error probability.
  • When an opponent's re-raising range is extremely strong, it effectively controls losses.
  • Reduces the hassle of passive defense from the disadvantageous small blind position.

Cons

  • Exploitable by opponents: If an opponent notices the fixed bet size, they can easily adjust by frequently re-raising, forcing folds and causing significant blind losses.
  • Foregoes potential profit: Many raise-worthy hands (e.g., AQ, medium pairs) have some defensive value against re-raises; always folding forfeits win rate.
  • Lacks balance, making it unstable as a long-term strategy.

Typical Example

Assume blinds 10/20, effective stack 2000. From the small blind, always raise to 60 preflop (half-pot). When the opponent shoves or raises to 180 or more from the big blind, the small blind instantly folds, regardless of whether the hand is AA or 27. In this example, the opponent can profit by re-raising with any two cards, so this strategy is effective only in rare situations where the opponent never bluffs.

Differences from Standard Strategy

A standard small blind preflop strategy adjusts bet sizing and fold frequency based on hand strength, stack depth, and opponent tendencies. For example, with AA, one might make a larger bet as a trap; with weak hands, one might limp or fold. The monotone bet-fold strategy completely abandons these adjustments, serving as a purely exploitative or beginner-friendly simplification.