What percentage of hands does Button open at 20bb?

Button open-raises 30% of hands at 20bb effective, 6-max - 49 of the 169 starting hands go in at full frequency.

Is this a GTO or an exploit range?

This is a GTO (game-theory-optimal) chip-EV range, balanced to be unexploitable against any opponent. Exploit ranges that deviate from this against a specific known tendency are a separate, Pro-tier solve.

Ranges / Button 20bb

Button push/fold chart - 20bb, 6-max

Button open-raises 30% of hands here at 20bb effective (49 of 169 starting hands go in at full frequency). The button acts last on every remaining street, the best seat at the table - it opens the widest range by far.

At this depth you're deep enough that a few of the weakest hands here play slightly better as a raise you can fold to real aggression than as a flat shove, though shoving stays close to optimal for the bulk of this range.

ShoveFold

Button shove range at 20bb, hand by hand

Always shove — 49 of the 169 starting hands: 22+, A2s+, K9s+, Q9s+, J9s+, T8s+, 98s, AKo, AQo, AJo, ATo, A9o, A8o, A7o, A5o, KTo+, QJo

Less than always — 24 hands the solver shoves only some of the time: J8s (99%), JTo (99%), A4o (99%), QTo (98%), 87s (98%), A6o (98%), K7s (97%), K8s (96%), Q8s (96%), 97s (96%), 76s (93%), K6s (63%), A3o (56%), T7s (38%), K5s (6%), 86s (4%), J7s (3%), A2o (3%), Q7s (2%), Q6s (2%), T9o (2%), 65s (2%), K4s (1%), 96s (1%).

Across every hand dealt, that is 30% of hands played, weighted by how often each one is dealt.

Compared to 25bb

Button shoves 6 hands at 20bb that it folds at 25bb: K6s, 97s, 76s, A6o, A4o, A3o.

Hands right on the edge

These aren't clean shove-or-fold decisions - the solver mixes its strategy on each one: K6s (63% shove), T7s (38% shove), A3o (56% shove).

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Button at other stack depths

Other positions at 20bb

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Learn the theory behind this chart

How to Read a Push/Fold Chartguide
Short Stack Poker Strategyguide
What Is an Effective Stack? A Guide to Stack Depthguide
Push/Fold Strategy by Stack Depth: 5bb vs. 10bb vs. 15bbguide
Push/Fold Pokerglossary
Shoving Rangeglossary

Also see this spot at 9-max →

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Stack depths covered on this site: 30bb, 25bb, 20bb, 15bb, 12bb, 10bb, 8bb, 5bb. See all ranges →