PokerSolver/4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BTN vs CO 4-bet 11.5bb

BTN vs CO 4-bet 11.5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · CO opens 2.5bb, BTN 3-bets to 5bb, CO 4-bets to 11.5bb · Button to act

Fits exactlyno game we have checked

Close1 games

CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here

Tournament

4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differCOBTNSBBB

Pot 18.64bbYour cards?

5bb

0.5bb

1bb

11.5bb

Tap your two cards.

Button's range

296 of 1,326 combos get here

Fold 32.5%Call 61.2%All-in 79.84bb 6.3%

Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the button (BTN) when CO opens 2.5bb, BTN 3-bets to 5bb, CO 4-bets to 11.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

CO opens 2.5bb, BTN 3-bets to 5bb, CO 4-bets to 11.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the button (BTN) folds 32.5%, calls 61.2% and goes all-in 79.84bb 6.3%. Always call: 33-QQ, AJs-AQs, A4s-A5s, KTs+, QTs+, JTs, T9s, 98s, 87s, 65s, AQo. Mixed: KK+, AKs, ATs, A6s-A8s, A3s, K7s-K9s, Q9s, J8s, T8s, AKo, AJo.

Always fold: J9s, ATo, KJo+, QJo, JTo
Always call: 33-QQ, AJs-AQs, A4s-A5s, KTs+, QTs+, JTs, T9s, 98s, 87s, 65s, AQo
Always all-in 79.84bb: No hand plays this every time
Mixed: KK+, AKs, ATs, A6s-A8s, A3s, K7s-K9s, Q9s, J8s, T8s, AKo, AJo

Settings: 4-max · 80bb · 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, 80bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.

Rake sources for the games it fits: 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.