GlossaryStrategy

SB limp or raise

The small blind's first-in choice against the big blind alone: raise, limp or fold.

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What it means
When everyone folds to the small blind, only the big blind is left. Modern MTT strategy mixes a raising range with a wide limping range, and some hands are played both ways at set frequencies. The app drills this at 100, 40 and 20bb, from approximate published charts.
How it is calculated
Raise hands that want a bigger pot or benefit from fold equity, limp the many hands that play well in a cheap pot out of position, and fold the weakest. Where the chart mixes limp and raise, the drill asks you to pick the size and grades the choice by its frequency.
Worked example
At 100bb, K5o limps, 88 raises and AA raises 60% of the time and limps 40%. At 20bb, 55 raises, 44 limps and 72o folds.
Why it matters
Blind-versus-blind pots come up every orbit. Raising too wide out of position gets you 3-bet off your hand, and folding too much gives the big blind a free walk.

See also: Limp, BB vs the small blind, Mixed strategy