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

BTN vs CO all-in

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 3bb, CO 3-bets to 6bb, BTN 4-bets to 13.8bb, CO goes all-in · Button to act

6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 56.1bbYour cards?
13.8bb
0.5bb
1bb
39.84bb

Tap your two cards.

Button's range

378 of 1,326 combos get here
Fold 65.9%Call 34.1%
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 3bb, CO 3-bets to 6bb, BTN 4-bets to 13.8bb, CO goes all-in in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?

CO limps, BTN isolates to 3bb, CO 3-bets to 6bb, BTN 4-bets to 13.8bb, CO goes all-in in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the button (BTN) folds 65.9% and calls 34.1%. Always call: 99+, AJs+, AJo+. Mixed: 55-66, A4s-ATs, K9s-KTs, 87s, 76s, A9o-ATo.

Always fold
33-44, A2s-A3s, K6s-K8s, Q8s-Q9s, JTs, J8s, T8s, 97s+, 65s, A7o-A8o, KJo+, QTo+, JTo
Always call
99+, AJs+, AJo+
Mixed
55-66, A4s-ATs, K9s-KTs, 87s, 76s, A9o-ATo
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.

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.