PokerSolver/6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/CO vs BTN 3-bet 9bb

CO vs BTN 3-bet 9bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · CO opens 3bb, BTN 3-bets to 9bb · Cutoff to act

6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differUTGHJCOBTNSBBB

Pot 14.46bbYour cards?

3bb

9bb

0.5bb

1bb

Tap your two cards.

Cutoff's range

530 of 1,326 combos get here

Fold 68.8%Call 6.2%All-in 39.84bb 25%

Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the cutoff (CO) when CO opens 3bb, BTN 3-bets to 9bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?

CO opens 3bb, BTN 3-bets to 9bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the cutoff (CO) folds 68.8%, calls 6.2% and goes all-in 39.84bb 25%. Always call: AJs. Always all-in 39.84bb: 77+, 44-55, AQs+, A9s, K9s-KJs, QTs, JTs, AQo+. Mixed: 66, 33, ATs, A5s, KQs, QJs, J9s, T9s, 98s, 65s, AJo, KQo.

Always fold: 22, A6s-A8s, A2s-A4s, K2s-K7s, Q4s-Q9s, J7s-J8s, T7s-T8s, 97s, 86s+, 76s, 54s, A3o-ATo, K8o-KJo, Q9o+, J9o+, T9o
Always call: AJs
Always all-in 39.84bb: 77+, 44-55, AQs+, A9s, K9s-KJs, QTs, JTs, AQo+
Mixed: 66, 33, ATs, A5s, KQs, QJs, J9s, T9s, 98s, 65s, AJo, KQo

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.