SB range vs BTN open at 40 bb (9-max)
When BTN opens and you're SB, with an effective stack of 40 bb in a 9-max tournament, the solver plays 47.9% of its hands (call 32.8%, raise 7.04 bb 15.2%) and folds 52.1%. 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 47.9% of the hands that reach this spot, about 636 combos out of 1,326.
- Call is the main action for 33.3% of hands: from AJs down to 76s, the weakest hand played this way.
- Raise is the main action for 14.5% of hands: from AA down to 53s, the weakest hand played this way.
- Conversely, the solver plays hands ranked outside the top 100, such as 96s, 86s, 76s, 75s.
What changes at 30 bb (55 hands change action)
- TT: raise here, all-in at 30 bb
- 99: raise here, all-in at 30 bb
- 88: raise here, all-in at 30 bb
- AKs: raise here, all-in at 30 bb
- AQs: raise here, all-in at 30 bb
- 77: raise here, all-in at 30 bb
What changes at 50 bb (11 hands change action)
- TT: raise here, call at 50 bb
- AKs: raise here, call at 50 bb
- AKo: raise here, call at 50 bb
- KQs: raise here, call at 50 bb
- KQo: raise here, call at 50 bb
- A9o: raise here, call at 50 bb
Frequently asked questions
Which hands should you play from SB, facing an open, at 40 bb in 9-max?
The solver plays 47.9% of the hands that reach this spot, about 636 combos out of 1,326. Call is the main action for 33.3% of hands: from AJs down to 76s, 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 call, 33 call, 44 call, 55 call, 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.
- MP range vs UTG open at 40 bb (9-max)
- HJ range vs UTG open at 40 bb (9-max)
- HJ range vs MP open at 40 bb (9-max)
- CO range vs UTG open at 40 bb (9-max)
- CO range vs MP open at 40 bb (9-max)
- CO range vs HJ open at 40 bb (9-max)
- BTN range vs UTG open at 40 bb (9-max)
- BTN range vs MP open at 40 bb (9-max)
- BTN range vs HJ open at 40 bb (9-max)
- BTN range vs CO open at 40 bb (9-max)
- SB open range at 40 bb (9-max)
- SB range vs UTG open at 40 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.