PokerSolver/5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BTN vs CO 4-bet 20.7bb

BTN vs CO 4-bet 20.7bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · CO opens 3bb, BTN 3-bets to 9bb, CO 4-bets to 20.7bb · 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

5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differHJCOBTNSBBB

Pot 32bbYour cards?

9bb

0.5bb

1bb

20.7bb

Tap your two cards.

Button's range

366 of 1,326 combos get here

Fold 39.8%Call 52.8%All-in 149.84bb 7.4%

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

What is the GTO play for the button (BTN) when CO opens 3bb, BTN 3-bets to 9bb, CO 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 150bb?

CO opens 3bb, BTN 3-bets to 9bb, CO 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 150bb: the button (BTN) folds 39.8%, calls 52.8% and goes all-in 149.84bb 7.4%. Always call: AA, 22-TT, AQs+, A6s-A9s, KTs+, QTs+, J9s+, T8s+, 98s, 87s, 76s, 65s, 54s, AQo. Always all-in 149.84bb: KK, AJs. Mixed: JJ-QQ, A3s-A5s, K9s, AKo, KJo.

Always fold: A2s, K3s-K8s, Q8s-Q9s, ATo-AJo, A8o, KQo, KTo, QJo, JTo
Always call: AA, 22-TT, AQs+, A6s-A9s, KTs+, QTs+, J9s+, T8s+, 98s, 87s, 76s, 65s, 54s, AQo
Always all-in 149.84bb: KK, AJs
Mixed: JJ-QQ, A3s-A5s, K9s, AKo, KJo

Settings: 5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 150bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.89). 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.