SB range vs BTN open at 30 bb (4-max)
When BTN opens and you're SB, with an effective stack of 30 bb in a 4-max tournament, the solver plays 31.8% of its hands (call 16.5%, raise 7.04 bb 4.8%, all-in 10.4%) and folds 68.2%. 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 31.7% of the hands that reach this spot, about 421 combos out of 1,326.
- Call is the main action for 17.8% of hands: from ATs down to 97s, the weakest hand played this way.
- Raise is the main action for 2.6% of hands: from AA down to 44, the weakest hand played this way.
- All-in is the main action for 10.9% of hands: from TT down to 87s, the weakest hand played this way.
- Surprise: the solver folds some top-50 hands here, such as A4o.
What changes at 25 bb (15 hands change action)
- A4s: call here, all-in at 25 bb
- A4o: fold here, call at 25 bb
- K8o: fold here, call at 25 bb
- A3o: fold here, call at 25 bb
- Q9o: fold here, call at 25 bb
- K7o: fold here, call at 25 bb
What changes at 40 bb (47 hands change action)
- TT: all-in here, raise at 40 bb
- 99: all-in here, raise at 40 bb
- 88: all-in here, raise at 40 bb
- AKs: all-in here, raise at 40 bb
- AQs: all-in here, raise at 40 bb
- 77: all-in here, raise at 40 bb
Frequently asked questions
Which hands should you play from SB, facing an open, at 30 bb in 4-max?
The solver plays 31.7% of the hands that reach this spot, about 421 combos out of 1,326. Call is the main action for 17.8% of hands: from ATs down to 97s, 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 all-in, 33 all-in, 44 raise, 55 all-in, 66 all-in.
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 all-in.
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.
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.