CO open range at 10 bb (4-max)
When you're first to act in the CO, with an effective stack of 10 bb in a 4-max tournament, the solver plays 31.6% of its hands (raise 2.00 bb 9.6%, all-in 22.0%) and folds 68.4%. 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 31.6% of the hands that reach this spot, about 419 combos out of 1,326.
- Raise is the main action for 9.4% of hands: from AA down to K8o, the weakest hand played this way.
- All-in is the main action for 22.2% of hands: from 88 down to 22, the weakest hand played this way.
What changes at 8 bb (13 hands change action)
- AA: raise here, all-in at 8 bb
- TT: raise here, all-in at 8 bb
- 99: raise here, all-in at 8 bb
- KTs: raise here, all-in at 8 bb
- A7s: raise here, all-in at 8 bb
- A6s: raise here, all-in at 8 bb
What changes at 12 bb (20 hands change action)
- 88: all-in here, raise at 12 bb
- AKs: all-in here, raise at 12 bb
- AQs: all-in here, raise at 12 bb
- 77: all-in here, raise at 12 bb
- AJs: all-in here, raise at 12 bb
- ATs: all-in here, raise at 12 bb
Frequently asked questions
Which hands should you play from CO, first in, at 10 bb in 4-max?
The solver plays 31.6% of the hands that reach this spot, about 419 combos out of 1,326. Raise is the main action for 9.4% of hands: from AA down to K8o, 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 all-in, 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 all-in, A3s all-in, A4s all-in, 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.
Push or fold, no open: the equilibrium ranges in the cutoff at these depths. The full push/fold chart
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.