PokerSolver
PokerSolver/6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/CO vs BTN 3-bet 5bb

CO vs BTN 3-bet 5bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · CO opens 2.5bb, BTN 3-bets to 5bb · Cutoff to act

6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 9.96bbYour cards?
2.5bb
5bb
0.5bb
1bb

Tap your two cards.

Cutoff's range

542 of 1,326 combos get here
Fold 28.9%Call 46.5%Raise 11.5bb 6.8%All-in 79.84bb 17.7%
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 in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO opens 2.5bb, BTN 3-bets to 5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the cutoff (CO) folds 28.9%, calls 46.5%, raises 11.5bb 6.8% and goes all-in 79.84bb 17.7%. Always call: 66-77, 22, KQs, K4s-K9s, Q6s-QTs, J8s-J9s, T7s-T8s, 97s+, 86s+, 75s, 65s, KJo+, QJo. Always raise 11.5bb: AA. Always all-in 79.84bb: KK, TT, AKs, A2s-A6s, AQo+. Mixed: JJ-QQ, 88-99, 33-55, A7s-AQs, KTs-KJs, K2s-K3s, QJs, Q5s, JTs, J7s, T9s, T6s, 76s, 54s, A9o-AJo, A3o-A5o, KTo, QTo, JTo, T9o.

Always fold
Q4s, J5s-J6s, A6o-A8o, K9o, Q9o, J9o
Always call
66-77, 22, KQs, K4s-K9s, Q6s-QTs, J8s-J9s, T7s-T8s, 97s+, 86s+, 75s, 65s, KJo+, QJo
Always raise 11.5bb
AA
Always all-in 79.84bb
KK, TT, AKs, A2s-A6s, AQo+
Mixed
JJ-QQ, 88-99, 33-55, A7s-AQs, KTs-KJs, K2s-K3s, QJs, Q5s, JTs, J7s, T9s, T6s, 76s, 54s, A9o-AJo, A3o-A5o, KTo, QTo, JTo, T9o
Settings: 6-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 24.92). 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.