PokerSolver
PokerSolver/5-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BTN vs CO 4-bet 11.5bb

BTN vs CO 4-bet 11.5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 60bb · CO opens 2.5bb, BTN 3-bets to 5bb, CO 4-bets to 11.5bb · Button to act

5-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 18.8bbYour cards?
5bb
0.5bb
1bb
11.5bb

Tap your two cards.

Button's range

322 of 1,326 combos get here
Fold 39.7%Call 45%All-in 59.84bb 15.3%
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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 60bb?

CO opens 2.5bb, BTN 3-bets to 5bb, CO 4-bets to 11.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 60bb: the button (BTN) folds 39.7%, calls 45% and goes all-in 59.84bb 15.3%. Always call: AA, JJ, 44-99, ATs-AQs, KTs+, QTs+, T9s, 98s, 87s, 76s, 65s, 54s. Always all-in 59.84bb: QQ-KK, AKs, A9s, AKo. Mixed: TT, A2s-A8s, K6s-K9s, JTs, T8s, AJo-AQo, KQo.

Always fold
K5s, Q9s, J8s-J9s, ATo, KTo-KJo, QJo
Always call
AA, JJ, 44-99, ATs-AQs, KTs+, QTs+, T9s, 98s, 87s, 76s, 65s, 54s
Always all-in 59.84bb
QQ-KK, AKs, A9s, AKo
Mixed
TT, A2s-A8s, K6s-K9s, JTs, T8s, AJo-AQo, KQo
Settings: 5-max · 60bb · 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, 60bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.3). 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.