小盲持续下注范围（Small Blind Continuation Bet Range）

Overview

Small Blind C-bet Range refers to the range of hands with which the small blind player bets on the flop as the preflop raiser. Because the small blind has the worst postflop position (first to act on the flop and disadvantaged thereafter), its c-bet range construction differs significantly from that of the button or cutoff.

Characteristics

• Tighter range: The small blind's preflop raising range is typically tight (approx. 15%-20% of hands), and the positional disadvantage postflop forces the c-bet range to be more polarized, favoring value hands and strong draws rather than thin value or pure bluffs.
• Lower frequency: Compared to in-position players (e.g., the button), the small blind's c-bet frequency is usually reduced by 10%-20%, because being out of position makes opponents more likely to exploit with check-raises or slow-playing strategies.
• Bet sizing impact: To mitigate the positional disadvantage, the small blind often uses larger bet sizes (e.g., 2/3 pot or more), which further tightens the range, ensuring that bet hands have sufficient equity.

Construction Principles

• Value portion: Includes strong hands like top pair or better, and medium pairs on dry boards (e.g., TT-88). These hands need protection and are difficult to profit from by just calling.
• Bluff portion: Prefers backdoor draws (e.g., overcards + backdoor flush draw), gutshot straight draws, or pair+draw hands. Avoids pure air, as pure bluffs from a disadvantageous position are easily crushed by opponents' check-raises.
• Exclusion portion: Folds bottom pair or worse without draws, as well as medium-strength hands prone to reverse implied odds (e.g., KQ on an A-high board).

Adjustment Factors

• Opponent tendencies: If opponents fold frequently, the range can be widened; if they often check-raise, tighten the range and increase the check-call frequency.
• Board texture: On dry boards (e.g., K72 rainbow), high c-bet frequency is acceptable; on wet boards (e.g., JT9 two-tone), the range should be more polarized, betting only strong hands and strong draws.
• Stack depth: With deep stacks, the small blind can leverage bet sizing to exploit opponents' calling ranges; with short stacks, the strategy tends toward shove-or-fold.

Typical Example

Assume a 6-max table, effective stacks 100BB. The small blind raises to 3BB preflop, and the big blind calls. The flop is A♠8♣2♥. The small blind's c-bet range might include:

• Value: AT+, 88, 22 (approx. 40 combos)
• Bluffs: KQ, KJ, QJ (backdoor straight or overcards), and 67s, 78s (middle backdoor straight)
• Excluded: Non-top-pair overcards below AJ (e.g., K9o), small pairs (e.g., 55)

Overall, the Small Blind C-bet Range is a carefully selected polarized range designed to maximize value while minimizing the risk of the positional disadvantage.