PokerSolver
PokerSolver/6-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

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

6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 22.26bbYour cards?
6bb
0.5bb
1bb
13.8bb

Tap your two cards.

Button's range

300 of 1,326 combos get here
Fold 34.5%Call 53.3%All-in 79.84bb 12.2%
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 6bb, CO 4-bets to 13.8bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO opens 3bb, BTN 3-bets to 6bb, CO 4-bets to 13.8bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the button (BTN) folds 34.5%, calls 53.3% and goes all-in 79.84bb 12.2%. Always call: AA, QQ, 44-TT, AJs-AQs, A5s, K9s+, QJs, JTs, T8s+, 87s. Always all-in 79.84bb: KK, A9s, AKo. Mixed: JJ, AKs, ATs, A6s-A8s, A3s-A4s, K8s, QTs, J9s, AJo-AQo.

Always fold
A2s, K7s, K5s, Q9s, ATo, KTo+, QTo+
Always call
AA, QQ, 44-TT, AJs-AQs, A5s, K9s+, QJs, JTs, T8s+, 87s
Always all-in 79.84bb
KK, A9s, AKo
Mixed
JJ, AKs, ATs, A6s-A8s, A3s-A4s, K8s, QTs, J9s, AJo-AQo
Settings: 6-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 24.92). 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.