Poker Term
小盲位10bb开局全下（SB 10bb Open Jam）
SB 10bb Open Jam
An aggressive strategy of directly jamming all-in from the small blind with a stack depth of about 10 big blinds, aiming to take down the pot by utilizing fold equity.
Strategy Background
SB 10bb Open Jam is a classic move in short-stack strategy, commonly seen in late tournament stages or cash game short-stack situations. When the small blind has only about 10 big blinds remaining, a standard raise (2-3bb) could leave you in a passive position if the big blind shoves all-in. Therefore, shoving directly maximizes fold equity.
Mathematical Principles
- The big blind's defending range typically requires around 30-40% equity to call; shoving forces the opponent to fold marginal hands.
- Assuming the small blind shoves 10bb, the big blind would need to call 9.5bb (1bb already posted as big blind), making the total pot about 21bb, and the required equity to call is approximately 45%. The small blind's shoving range usually includes pairs, A-high hands, suited connectors, etc., which have about 50% equity against random hands, forcing the big blind to fold many hands that would be difficult to play post-flop.
Notes
- Stack Depth Variations: If the stack is above 12bb, shoving may waste value; below 8bb, fold equity decreases.
- Opponent Tendencies: Works better against tight opponents; loose opponents may call more widely.
- ICM Factors: In tournaments near the money bubble, survival pressure must be considered.