Drill PokerA 10 big blind stack looks like a lost tournament. In reality it is the most studied, most "solved" zone in poker: exact ranges exist for it, and a player who knows them holds an edge over most of the field without a single hard postflop decision. This plan covers the zone end to end: what to open, what to call, and what never to do.
Why 10 BB is still a game
The short stack's main asset is fold equity: a 10 BB shove is still too expensive to call lightly. An opponent with 25 BB risks half their stack against your range — and folds everything outside the top 15–20% of hands. Every such fold hands you the blinds and antes — about 2.5 BB, a quarter of your stack, with no showdown.
The second asset is simplicity. At 10 BB there are no "tough turn spots": the decision tree collapses to shove or fold, and for that pair exact equilibrium ranges have been computed — the Nash numbers. While your opponents improvise, you consult a table.
Opening: two buttons instead of three streets
Rule one of the zone: if you enter the pot first, you shove. No limping, no min-raising. A limp puts no pressure on the blinds and leaves you without a plan against a raise; a min-raise commits 20% of your stack with half the threat. Both lines leave decisions for postflop, where a short stack has nothing to play with.
Shoving width depends on position more than on your cards:
- Early position (EP, MP): strength only — pairs, big aces, the best broadways. Too many players behind to steal.
- Cutoff and button: the range widens sharply — any ace, most kings with support, suited connectors.
- Small blind: the widest spot in poker — against a single random range, more than half of all hands shove profitably.
Push from BTN, 10 BB stack
Calling a shove: different math
When the shove comes at you, fold equity works against you: a caller only wins at showdown. That is why calling ranges are always tighter than shoving ranges — and it is the most expensive asymmetry in tournament poker: hands that shove profitably are often losing calls.
KJo against a wide button shove is a comfortable call: it dominates half the aggressor's range. The same KJo against an early-position shove is an easy fold: that range is full of hands that dominate you. Full boundaries live in the call-vs-push chart.
Adjustments: antes and ICM
Antes widen everything. With antes the starting pot is about 2.5 BB instead of 1.5 BB: stealing pays more, folding costs more, and both shoving and calling ranges grow. Modern charts assume antes by default.
ICM tightens calls. Near pay jumps and on the bubble, busting costs more than doubling gains — call other players' shoves tighter than the chip chart, sometimes dramatically so. Open-shoving barely suffers: the pressure works for you. The full logic is in our ICM without formulas breakdown.
Three mistakes that burn short stacks
- Waiting for premiums. At 10 BB you have one or two orbits to act; whoever waits for QQ+ blinds down to 5 BB, where a shove no longer moves anyone.
- Limping to "see a cheap flop". There are no cheap flops at 10 BB: every limp spends 10% of your stack for the right to play without initiative.
- Calling because the hand looks pretty. ATo looks better than 76s, but against a shove what matters is not beauty — it is how your hand intersects the aggressor's range.
Building the skill
The 10 BB zone trains faster than any other: decisions are binary and feedback is instant. Ten minutes a day in the push/fold trainer at 8–12 BB stacks, and within two weeks the range boundary answers before you finish thinking. The readiness benchmark: 90% accuracy over a streak of 30 hands.