Push/Fold Poker Strategy: Nash Charts, Stack Depth & ICM
Last updated: May 12, 2026
Push/fold poker means playing only two moves — shove all-in preflop or fold — which is the optimal strategy once your stack falls to 10–15 big blinds. At those depths a standard raise commits too large a fraction of your stack to fold profitably post-flop, so going all-in or getting out is the mathematically correct approach.
At 10bb you should shove 20–30% of hands from the BTN; at 15bb the shoving range tightens to 15–20%. A Nash equilibrium chart defines the mathematically correct shoving and calling ranges that neither player can profitably deviate from.
This page covers the Nash push/fold charts by stack depth and position, how to adjust for ICM pressure near the bubble, calling ranges, and common mistakes short stack strategy players make.
What Is Push/Fold Strategy?
Push/fold is a binary preflop decision tree: you either move all-in or you fold, with no open-raises, calls, or 3-bets. It exists because of a fundamental math problem — when your stack is small relative to the blinds, a normal-sized open (2–2.5x) commits 15–20% of your stack. Opponents can call or 3-bet, leaving you pot-committed to bad situations or forced to fold having already invested chips.
Shoving all-in solves this by removing post-flop play entirely and maximizing fold equity when short-stacked. Opponents must call for their tournament life (or a large fraction of it), meaning they need a strong hand to call — and you pick up the blinds and antes uncontested a meaningful percentage of the time.
Push/Fold EV = (Fold frequency × Blinds won) + (Call frequency × Equity vs range)
e.g., 10bb shove: opponent folds 65% → pick up 1.5bb; calls 35% → 45% equity × 21bb pot
The strategy is standard in tournament poker and is formally solved by Nash equilibrium theory — the same mathematics used in economics and game theory.
When to Switch to Push/Fold Mode
The standard threshold is 10–15 big blinds effective stack. Below 10bb, push/fold is almost always mandatory. Between 12–15bb it depends on your position, ante structure, and opponent tendencies. Some aggressive tournament players start push/fold as high as 18–20bb, especially from the blinds.
Push/fold mandatory
A standard raise leaves you pot-committed with any flop action.
Push/fold strongly preferred
Open-raising is possible with the top 5% of hands; shove the rest.
Mixed strategy
Open-raise premium hands, push/fold medium hands, fold weak hands.
Standard ranges apply
Stack is deep enough to play post-flop poker profitably.
Antes significantly increase the pot before the action reaches you, raising the EV of shoving. In ante-heavy formats (big-blind ante tournaments), the push/fold threshold effectively shifts upward — shoving 15–17bb is often correct.
Push/Fold Ranges by Position and Stack Depth
Position dramatically affects shoving ranges. From the BTN you face only two opponents and have positional advantage — you can shove wider. From UTG you face many opponents who can wake up with a strong hand. Below are approximate Nash-derived shoving percentages across positions and stack depths.
Button (10bb)
~30%
Example hands:
22+, A2s+, A8o+, K9s+, KJo+, Q9s+
Cutoff (10bb)
~22%
Example hands:
33+, A4s+, A9o+, KTs+, KQo, QTs+
Small Blind (10bb)
~40%
Example hands:
22+, A2s+, A5o+, K7s+, KTo+, Q8s+
Approximate Shoving % by Stack Depth
Shove or fold is mandatory — 3x opens are far too expensive.
Most players still go to push/fold mode; occasional open-folds remain viable.
Borderline — some hands can open-raise, but shoves still dominate premium hands.
For precise hand-by-hand ranges, consult a Nash push/fold calculator or study preflop shoving ranges by position.
Calling Ranges — When to Call a Shove
Calling a shove requires a tighter range than shoving, because a call puts your entire stack at risk in a neutral-or-unfavourable equity situation. The Nash calling range from the BB vs a 10bb BTN shove is approximately 36–40% of hands:
Pairs
22+
All pocket pairs are profitable calls vs a 30% BTN range
Suited Aces
A2s+
Domination value + flush equity; slam-dunk call
Offsuit Aces
A8o+
Below A8o the domination risk outweighs equity
Suited Kings
KTs+
Live cards + flush out; barely profitable at the margin
Offsuit Kings
KQo
The only offsuit king that clears the break-even threshold
Calling ranges widen as shoving ranges widen (earlier position shoves are tighter, so you need a stronger hand to call) and tighten as effective stacks grow (more chips at risk per call). When facing a short-stack open-shove from UTG, your Nash calling range is typically 10–12% — roughly TT+ and AJs+.
ICM Adjustments to Push/Fold Charts
Nash charts are solved for chip EV — they maximize chip accumulation without regard for payouts. In tournaments, ICM pressure near the bubble changes the math fundamentally: losing all your chips ends your tournament, but doubling up doesn't give you twice the prize equity.
ICM Penalty
Near the money bubble, tighten your shoving range by 20–30% vs pure Nash. If Nash says shove 30% from the BTN, your ICM-adjusted range might be ~20–22%. Conversely, your calling range also tightens — you need stronger hands to risk elimination.
Bubble with many short stacks
Tighten significantly — let other short stacks bust before you.
Chip leader at the bubble
Widen slightly — opponents are folding too wide due to ICM fear.
Pay jump (e.g., final table)
Apply ICM adjustments again; each spot is worth substantially more.
Heads-up for the title
Pure Nash applies — there is no ICM effect in a two-player payout split.
Push/Fold in Cash Games vs Tournaments
Tournaments
- ·Stacks naturally shrink relative to blinds
- ·ICM creates survival pressure beyond chip EV
- ·Antes increase pot size, widening shove EV
- ·Push/fold is a core tournament skill
Cash Games
- ·Standard stacks are 100bb — push/fold rarely applies
- ·Can rebuy, so elimination pressure is minimal
- ·Short-stack buy-in strategy (20bb) uses push/fold
- ·Some rooms enforce minimum buy-in rules against it
Push/fold also appears in Spin & Go tournaments, which begin at 25bb and have rapid blind structures. Players frequently reach push/fold territory within a few hands, making a solid Nash chart foundation essential. See our full tournament strategy guide for broader context.
Common Push/Fold Mistakes
Mistake: Limping or min-raising at 10bb
Fix: A 2x raise at 10bb leaves you pot-committed to almost any 3-bet. Shove or fold — never limp in a push/fold situation.
Mistake: Shoving too tight from the BTN
Fix: Many recreational players shove only premium hands short-stacked. The BTN Nash range at 10bb is ~30% — folding suited connectors and small pairs is a major leak.
Mistake: Calling shoves too loosely
Fix: Suited connectors and small pairs are great for shoving but often bad calls. The calling range is inherently tighter than the shoving range because you have no fold equity.
Mistake: Ignoring ICM near the bubble
Fix: Pure Nash is correct chip-EV, not real-money EV. Applying Nash ranges on the bubble without ICM adjustment is a common and costly error.
Mistake: Not accounting for antes
Fix: Antes increase the pot pre-action, making shoves more profitable. Failing to factor in antes causes players to be too tight and miss profitable shoves.
Mistake: Using the same range from every position
Fix: Position is the single biggest variable in push/fold. A UTG shove at 10bb is roughly 12–15%; a BTN shove is ~30%. Confusing the two is a fundamental error.
Definitions
Frequently Asked Questions
What is push/fold in poker?
Push/fold is a short-stack strategy where you only take two actions preflop: shove all-in or fold. It eliminates post-flop decisions and is the mathematically optimal strategy when your stack falls to roughly 10–15 big blinds, because a standard raise commits too large a fraction of your stack to fold profitably.
At what stack size should you start playing push/fold?
The standard threshold is 10–15 big blinds effective stack. Below 10bb, push/fold is almost always correct. Between 12–15bb it depends on position and game conditions. Some aggressive tournament players start push/fold as high as 18–20bb, especially from the blinds or when facing antes.
How do you know what hands to shove with?
Use Nash equilibrium push/fold charts as a baseline. At 10bb from the BTN you shove roughly the top 30% of hands: all pairs down to 44, most suited aces (A2s+), offsuit aces above A8o, most suited kings above K9s, and several suited broadway combos. The exact range shrinks as stack depth increases and tightens from early position.
What is the Nash equilibrium chart?
The Nash equilibrium push/fold chart defines shoving and calling ranges at each stack depth and position such that neither player can improve their EV by deviating unilaterally. It is the game-theory-optimal (GTO) solution for heads-up push/fold scenarios. Nash charts are widely used as a starting point, though ICM pressure and opponent tendencies often justify deviations.
Should you adjust push/fold ranges for ICM?
Yes. Near the money bubble or a pay jump, ICM (Independent Chip Model) penalizes stack losses more than it rewards stack gains. This means you should tighten your shoving range by roughly 20–30% vs pure Nash — particularly as the big stack, or when multiple short stacks could bust before you. Conversely, the chip leader can widen slightly to exploit ICM-pressured opponents who over-fold.
Can you use push/fold strategy in cash games?
Rarely. In cash games effective stacks are typically 100bb+, making push/fold suboptimal and exploitable. The main exception is a very short buy-in situation (under 15–20bb), where push/fold is still mathematically sound. Cash game short-stacking (buying in for the minimum and playing push/fold) is a well-known edge-seeking strategy, though many cardrooms have introduced minimum buy-in rules to discourage it.
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