PokerSolver
PokerSolver/4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BTN vs CO all-in

BTN vs CO all-in

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · CO limps, BTN isolates to 2.5bb, CO 3-bets to 7.5bb, BTN 4-bets to 17.25bb, CO goes all-in · Button to act

4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 219.23bbYour cards?
17.25bb
0.5bb
1bb
199.84bb

Tap your two cards.

Button's range

350 of 1,326 combos get here
Fold 86.6%Call 13.4%
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 2.5bb, CO 3-bets to 7.5bb, BTN 4-bets to 17.25bb, CO goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

CO limps, BTN isolates to 2.5bb, CO 3-bets to 7.5bb, BTN 4-bets to 17.25bb, CO goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the button (BTN) folds 86.6% and calls 13.4%. Always call: AA. Mixed: TT-KK, 77, 55, 33, AKs, ATs-AJs, A5s, KJs, JTs, 98s, 87s, AKo.

Always fold
88, 22, AQs, A8s-A9s, A6s, A4s, A2s, KQs, K3s-KTs, Q8s+, J8s-J9s, T7s+, 86s, 76s, 64s, 54s, ATo-AQo, KTo+, QTo+, JTo
Always call
AA
Mixed
TT-KK, 77, 55, 33, AKs, ATs-AJs, A5s, KJs, JTs, 98s, 87s, AKo
Settings: 4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 200bb stacks, 5% rake capped at 4.8bb; 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.