PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BTN vs CO 3-bet 9bb

BTN vs CO 3-bet 9bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO limps, BTN isolates to 3bb, CO 3-bets to 9bb · Button to act

4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 14.14bbYour cards?
3bb
0.5bb
1bb
9bb

Tap your two cards.

Button's range

454 of 1,326 combos get here
Fold 42.8%Call 48.5%Raise 20.7bb 8.7%All-in 249.84bb 0.1%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the button (BTN) when CO limps, BTN isolates to 3bb, CO 3-bets to 9bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

CO limps, BTN isolates to 3bb, CO 3-bets to 9bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the button (BTN) folds 42.8%, calls 48.5%, raises 20.7bb 8.7% and goes all-in 249.84bb 0.1%. Always call: QQ, 88-TT, 66, 44, A8s-AJs, A6s, A4s, KTs+, K8s, K6s, QTs, J9s, T9s, T7s, 86s, 54s, AQo+. Always raise 20.7bb: AA, AKs. Mixed: KK, JJ, 77, 55, 22-33, AQs, A7s, A5s, A2s-A3s, K9s, K7s, K5s, K3s, QJs, Q8s-Q9s, JTs, T8s, 97s+, 87s, 75s+, 64s+, ATo-AJo, KQo.

Always fold
K4s, A8o, A5o, KTo-KJo, QTo+, JTo
Always call
QQ, 88-TT, 66, 44, A8s-AJs, A6s, A4s, KTs+, K8s, K6s, QTs, J9s, T9s, T7s, 86s, 54s, AQo+
Always raise 20.7bb
AA, AKs
Always all-in 249.84bb
No hand plays this every time
Mixed
KK, JJ, 77, 55, 22-33, AQs, A7s, A5s, A2s-A3s, K9s, K7s, K5s, K3s, QJs, Q8s-Q9s, JTs, T8s, 97s+, 87s, 75s+, 64s+, ATo-AJo, KQo
Settings: 4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 250bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.