小盲位100大盲3-Bet全下（SB 100bb 3-Bet Jam）

Meaning and Background

“SB 100bb [3-Bet] Jam” refers to a situation where the player in the small blind (SB) with an effective stack depth of approximately 100 big blinds (100bb) chooses to [3-Bet] (pre-flop third raise) and go all-in (Jam) in response to an opponent's opening raise (usually from the big blind or under the gun). This strategy is common in online high-stakes games or tournaments, aiming to exert maximum pressure by leveraging positional disadvantage and stack depth.

Strategic Logic

• Positional Disadvantage: The small blind is always in the worst position post-flop (except the big blind), so aggressive pre-flop action can reduce post-flop decision difficulty.
• [Stack Depth]: 100bb is a moderately deep stack; going all-in can deny opponents' implied odds and force them to fold marginal hands.
• Range Polarization: Typically uses strong hands (like [QQ]+, AK) or an appropriate proportion of bluffing hands (like [A5s], [KTs]) to shove and balance the range.

Applicable Scenarios

• Opponent's Range is Wide: When the big blind or late-position players frequently steal blinds, a [3-Bet] Jam can effectively punish.
• Avoid Complex Post-Flop Situations: Holding medium-strength hands like TT, AQ, shoving can avoid encountering overcards or passive situations post-flop.
• Tournament [ICM Pressure]: When approaching the money bubble or final table, shoving can force opponents to make tough decisions.

Risks and Precautions

• Win Rate When Called: If the opponent holds AA or [KK], shoving can lead to significant losses, so careful selection of stack size and opponent tendencies is needed.
• Bluff Frequency: Overuse can lead opponents to adjust and call with tighter ranges. Generally, a bluff-to-value ratio of about 1:2 is recommended.
• Stack Management: When effective stacks deviate from 100bb (e.g., below 80bb or above 120bb), the efficiency of shoving may change, requiring strategy adjustment.

Common Misconceptions

• Not all 100bb situations are suitable for shoving: if the opponent is a tight-passive player, a small [3-Bet] may be better.
• Shoving does not mean mindless push: it should be combined with opponent data, table dynamics, and own image for a comprehensive judgment.