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Heads-Up Push/Fold Chart 20bb (Nash)

Heads-up at 20 big blinds: the Nash push/fold solution for both sides. The small blind jams 50% and the big blind calls 21% — both shown as full 13×13 charts with the expected value of every hand in big blinds, including the hands that are close to a coin flip.

Small blind — jamming range — 50.0%

JamMixedFold

Big blind — calling range — 20.9%

CallMixedFold

Expected value per hand (bb)

At twenty blinds the small blind jams 50% and the big blind calls 21%. This is past the point where jamming is the best strategy — but it is exactly the point where knowing the jamming range protects you from getting it in badly.

The two ranges are now far apart: the small blind risks 20bb to win 1.5bb, and the big blind needs a genuinely good hand to pay it off. That asymmetry means a lot of the small blind's jams are still profitable purely on folds — but the downside when called has grown four-fold since 5bb.

If your opponent shoves 20bb, they are usually either following a chart or making a mistake. The chart tells you which hands beat a correct 50% range; anything looser than that from them, and you can widen. Do not widen on a hunch.

FAQ

What is the correct heads-up shoving range at 20bb?

The small blind jams about 50% at 20bb; the full Nash range is on this page with the EV of every hand. Hands showing between +0.00 and +0.03bb are close to indifferent — shoving or folding them costs almost nothing in the long run.

Do these heads-up charts assume the big blind plays correctly?

Yes — both ranges are the equilibrium against each other (the big blind calls 21% here). If your opponent calls too wide, tighten your jams to value; if they fold too much, widen toward any two cards. The equilibrium is the baseline you deviate from, not a target to hit against a bad player.

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