PokerSolver
PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/CO vs BTN 3-bet 9bb

CO vs BTN 3-bet 9bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · CO opens 3bb, BTN 3-bets to 9bb · Cutoff to act

5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 14.3bbYour cards?
3bb
9bb
0.5bb
1bb

Tap your two cards.

Cutoff's range

534 of 1,326 combos get here
Fold 62.6%Call 11.6%Raise 20.7bb 19.7%All-in 79.84bb 6.1%
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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO opens 3bb, BTN 3-bets to 9bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the cutoff (CO) folds 62.6%, calls 11.6%, raises 20.7bb 19.7% and goes all-in 79.84bb 6.1%. Always call: 88, 66, ATs-AJs, KQs, 65s. Always raise 20.7bb: QQ+, AKs, A6s-A7s, A4s, K9s. Mixed: 99-JJ, 77, 22-55, AQs, A8s-A9s, A5s, A2s-A3s, KTs-KJs, Q9s+, J9s+, T9s, 76s, 54s, ATo+, KQo.

Always fold
K2s-K8s, Q4s-Q8s, J5s-J8s, T6s-T8s, 96s+, 86s+, 75s, A4o-A9o, K8o-KJo, Q9o+, J9o+, T9o
Always call
88, 66, ATs-AJs, KQs, 65s
Always raise 20.7bb
QQ+, AKs, A6s-A7s, A4s, K9s
Always all-in 79.84bb
No hand plays this every time
Mixed
99-JJ, 77, 22-55, AQs, A8s-A9s, A5s, A2s-A3s, KTs-KJs, Q9s+, J9s+, T9s, 76s, 54s, ATo+, KQo
Settings: 5-max · 80bb · 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, 80bb stacks, 5% rake capped at 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.