BTN range vs CO open at 20 bb (9-max)
When CO opens and you're BTN, with an effective stack of 20 bb in a 9-max tournament, the solver plays 35.6% of its hands (call 27.7%, raise 5.20 bb 3.0%, all-in 4.9%) and folds 64.4%. These frequencies come from Exploit It's full preflop tree: a chip-EV equilibrium with antes, computed for every position at the table.
Each cell: the share of each action for that hand, left to right. Gray cell: hand not in the range at this point.
Key takeaways for this spot
- The solver plays 35.6% of the hands that reach this spot, about 473 combos out of 1,326.
- Call is the main action for 27.8% of hands: from JJ down to Q6s, the weakest hand played this way.
- Raise is the main action for 2.9% of hands: from AA down to 22, the weakest hand played this way.
- All-in is the main action for 5.4% of hands: from 88 down to 98s, the weakest hand played this way.
What changes at 17 bb (7 hands change action)
- QQ: raise here, all-in at 17 bb
- 88: all-in here, call at 17 bb
- 55: all-in here, call at 17 bb
- J9s: raise here, all-in at 17 bb
- J8s: call here, all-in at 17 bb
- 33: raise here, call at 17 bb
What changes at 25 bb (18 hands change action)
- JJ: call here, raise at 25 bb
- 88: all-in here, call at 25 bb
- AKs: all-in here, raise at 25 bb
- AQs: all-in here, call at 25 bb
- AKo: all-in here, raise at 25 bb
- AQo: all-in here, call at 25 bb
Frequently asked questions
Which hands should you play from BTN, facing an open, at 20 bb in 9-max?
The solver plays 35.6% of the hands that reach this spot, about 473 combos out of 1,326. Call is the main action for 27.8% of hands: from JJ down to Q6s, the weakest hand played this way.
What should you do with small pairs (22 to 66) in this spot?
The solver's main action with each hand: 22 raise, 33 raise, 44 call, 55 all-in, 66 call.
What should you do with weak suited aces (A2s to A5s) in this spot?
The solver's main action with each hand: A2s call, A3s call, A4s call, A5s call.
How do you train on this spot?
Exploit It's free quiz deals you random hands in this exact spot and shows you the solver's answer after each choice.
Short stack: the push/fold chart, from 5 to 20 bb
- MP range vs UTG open at 20 bb (9-max)
- HJ range vs UTG open at 20 bb (9-max)
- HJ range vs MP open at 20 bb (9-max)
- CO range vs UTG open at 20 bb (9-max)
- CO range vs MP open at 20 bb (9-max)
- CO range vs HJ open at 20 bb (9-max)
- BTN open range at 20 bb (9-max)
- BTN range vs UTG open at 20 bb (9-max)
- BTN range vs MP open at 20 bb (9-max)
- BTN range vs HJ open at 20 bb (9-max)
- BTN range vs UTG limp at 20 bb (9-max)
- BTN range vs MP limp at 20 bb (9-max)
Equilibrium computed by the Exploit It solver in chip-EV, antes included, open size 2 bb at 25 bb or less and 2.2 bb deeper. The model's range-width caps can make some EVs of unplayed actions optimistic: play the frequencies.