PokerSolver
PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/CO vs BTN all-in

CO vs BTN all-in

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO opens 2.5bb, BTN 3-bets to 5bb, CO 4-bets to 11.5bb, BTN goes all-in · Cutoff to act

4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 113.48bbYour cards?
11.5bb
99.84bb
0.5bb
1bb

Tap your two cards.

Cutoff's range

364 of 1,326 combos get here
Fold 85.4%Call 14.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the cutoff (CO) when CO opens 2.5bb, BTN 3-bets to 5bb, CO 4-bets to 11.5bb, BTN goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

CO opens 2.5bb, BTN 3-bets to 5bb, CO 4-bets to 11.5bb, BTN goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the cutoff (CO) folds 85.4% and calls 14.6%. Always call: JJ+, AKs, AKo. Mixed: 88-TT, 66, AQs.

Always fold
55, A5s-AJs, A2s-A3s, K9s+, K4s-K7s, QTs+, Q8s, Q6s, J8s+, T8s+, 98s, 86s+, 75s+, 65s, AJo-AQo, KQo, QJo
Always call
JJ+, AKs, AKo
Mixed
88-TT, 66, AQs
Settings: 4-max · 100bb · 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, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.