PokerSolver
PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BTN vs CO 4-bet 13.8bb

BTN vs CO 4-bet 13.8bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · CO opens 2bb, BTN 3-bets to 6bb, CO 4-bets to 13.8bb · Button to act

5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 22.1bbYour cards?
6bb
0.5bb
1bb
13.8bb

Tap your two cards.

Button's range

506 of 1,326 combos get here
Fold 62.8%Call 25.5%All-in 79.84bb 11.8%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the button (BTN) when CO opens 2bb, BTN 3-bets to 6bb, CO 4-bets to 13.8bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO opens 2bb, BTN 3-bets to 6bb, CO 4-bets to 13.8bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the button (BTN) folds 62.8%, calls 25.5% and goes all-in 79.84bb 11.8%. Always call: AA, 66-99, 44, 22, AQs, KQs, K9s-KTs, QTs, JTs, 98s, 76s. Always all-in 79.84bb: JJ-KK, AKs, AKo. Mixed: TT, 55, 33, A7s-AJs, A2s-A5s, KJs, K7s, QJs, Q9s, J9s, T8s+, 64s+, 54s, AJo-AQo, KQo.

Always fold
A6s, K8s, K5s-K6s, K3s, Q7s-Q8s, J7s-J8s, T6s-T7s, T3s-T4s, 96s, 86s+, 75s, A4o-ATo, KTo-KJo, QJo, JTo
Always call
AA, 66-99, 44, 22, AQs, KQs, K9s-KTs, QTs, JTs, 98s, 76s
Always all-in 79.84bb
JJ-KK, AKs, AKo
Mixed
TT, 55, 33, A7s-AJs, A2s-A5s, KJs, K7s, QJs, Q9s, J9s, T8s+, 64s+, 54s, AJo-AQo, KQo
Settings: 5-max · 80bb · 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, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.