PokerSolver
PokerSolver/6-max · 100bb · 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) · 100bb · CO opens 2bb, BTN 3-bets to 6bb, CO 4-bets to 13.8bb · Button to act

6-max · 100bb · 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

430 of 1,326 combos get here
Fold 46.2%Call 41.8%All-in 99.84bb 12%
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 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 100bb?

CO opens 2bb, BTN 3-bets to 6bb, CO 4-bets to 13.8bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the button (BTN) folds 46.2%, calls 41.8% and goes all-in 99.84bb 12%. Always call: AA, 22-TT, A9s-AJs, A7s, KQs, K9s-KTs, JTs, T8s+, 54s. Always all-in 99.84bb: QQ-KK. Mixed: JJ, AQs+, A8s, A2s-A6s, KJs, K5s-K8s, Q8s+, J8s-J9s, 97s+, 87s, 76s, 64s+, AJo+, KQo.

Always fold
K3s, A9o-ATo, KTo-KJo, QTo+, JTo, T9o
Always call
AA, 22-TT, A9s-AJs, A7s, KQs, K9s-KTs, JTs, T8s+, 54s
Always all-in 99.84bb
QQ-KK
Mixed
JJ, AQs+, A8s, A2s-A6s, KJs, K5s-K8s, Q8s+, J8s-J9s, 97s+, 87s, 76s, 64s+, AJo+, KQo
Settings: 6-max · 100bb · 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, 100bb 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.

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.

Tree: Two HRC solves of this game in one, callers first: the callers solve (its raises grow by 1bb, or 1x, for each player who called before) has every one of the 1,323 spots here, so the base solve gives none of them.

This spot: from the callers solve (sizes: opens 2.0bb + 1.0bb, 2.5bb + 1.0bb, 3.0bb + 1.0bb; 3-bets 2.0x + 1.0x, 3.0x + 1.0x; 4-bets 2.3x, all-in; 5-bets all-in; HRC CI 24.58).