关煞位反偷频率

Overview

Cutoff anti-steal frequency measures how often the cutoff (CO) player responds to a Button (BTN) steal by 3-betting (re-raising). This metric is commonly used to analyze a player's aggressiveness and range balance from the cutoff/hijack position.

Calculation

Anti-steal frequency is typically calculated from a sample: when the BTN opens (steals) from the button, the percentage of times the CO 3-bets. For example, if the CO 3-bets 25 times out of 100 BTN steals, the anti-steal frequency is 25%.

Typical Ranges

• Tight-Aggressive (TAG): ~10%–20%, only anti-steal with strong hands (e.g., TT+, AQ+).
• Loose-Aggressive (LAG): ~25%–40%, uses a wider range (e.g., small pairs, suited connectors) to anti-steal.
• Excessively high anti-steal frequency (over 40%) may indicate an exploitable range and can be adjusted against.

Strategic Significance

Anti-steal frequency is key to balancing offense and defense:

• Against aggressive stealers: Increasing anti-steal frequency can deter their profit from stealing and force them to narrow their stealing range.
• Against conservative stealers: Lowering anti-steal frequency avoids excessive folding equity and unnecessary bluffs.
• Positional disadvantage: After anti-stealing from the CO, you face a possible 4-bet or call from the BTN, and you are out of position postflop. Therefore, your anti-steal range should include hands that can continue postflop (e.g., suited broadways, medium-high pairs).
• ICM impact: In tournaments, adjust anti-steal frequency based on blind levels, stack depth, and ICM pressure to avoid losing large stacks with marginal bluffs.

Notes

Anti-steal frequency should not be viewed in isolation; consider the opponent's steal frequency, 4-bet tendencies, postflop skills, and current table dynamics. A precise anti-steal frequency is part of GTO range construction, and in practice it is often adjusted exploitatively.