PokerSolver/6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BTN vs CO 3-bet 4bb

BTN vs CO 3-bet 4bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · CO limps, BTN isolates to 2bb, CO 3-bets to 4bb · 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

6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differUTGHJCOBTNSBBB

Pot 8.46bbYour cards?

2bb

0.5bb

1bb

4bb

Tap your two cards.

Button's range

382 of 1,326 combos get here

Fold 18.4%Call 48.3%Raise 9.2bb 13%All-in 39.84bb 20.3%

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 2bb, CO 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?

CO limps, BTN isolates to 2bb, CO 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the button (BTN) folds 18.4%, calls 48.3%, raises 9.2bb 13% and goes all-in 39.84bb 20.3%. Always call: 66, 33-44, ATs, KJs+, QJs, T9s, KQo. Always raise 9.2bb: KK+. Always all-in 39.84bb: 99. Mixed: TT-QQ, 77-88, 55, AJs+, A2s-A9s, K5s-KTs, K3s, Q8s-QTs, J8s+, T8s, 98s, 87s, 76s, 65s, A7o+, KTo-KJo, QTo+, JTo.

Always fold: Q7s
Always call: 66, 33-44, ATs, KJs+, QJs, T9s, KQo
Always raise 9.2bb: KK+
Always all-in 39.84bb: 99
Mixed: TT-QQ, 77-88, 55, AJs+, A2s-A9s, K5s-KTs, K3s, Q8s-QTs, J8s+, T8s, 98s, 87s, 76s, 65s, A7o+, KTo-KJo, QTo+, JTo

Settings: 6-max · 40bb · 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, 40bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.93). 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.