PokerSolver
PokerSolver/5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/CO vs BTN 4-bet 11.5bb

CO vs BTN 4-bet 11.5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · CO limps, BTN isolates to 2.5bb, CO 3-bets to 5bb, BTN 4-bets to 11.5bb · Cutoff to act

5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 18.8bbYour cards?
5bb
11.5bb
0.5bb
1bb

Tap your two cards.

Cutoff's range

194 of 1,326 combos get here
Fold 19%Call 74%All-in 149.84bb 7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the cutoff (CO) when CO limps, BTN isolates to 2.5bb, CO 3-bets to 5bb, BTN 4-bets to 11.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 150bb?

CO limps, BTN isolates to 2.5bb, CO 3-bets to 5bb, BTN 4-bets to 11.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 150bb: the cutoff (CO) folds 19%, calls 74% and goes all-in 149.84bb 7%. Always call: KK, JJ, 44-88, AQs, A9s-ATs, A7s, K9s-KJs, QJs, J9s, T8s. Always all-in 149.84bb: AA. Mixed: A5s-A6s, A2s, AJo.

Always fold
KQo
Always call
KK, JJ, 44-88, AQs, A9s-ATs, A7s, K9s-KJs, QJs, J9s, T8s
Always all-in 149.84bb
AA
Mixed
A5s-A6s, A2s, AJo
Settings: 5-max · 150bb · 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, 150bb 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.