PokerSolver/6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/CO vs SB 3-bet 5bb

CO vs SB 3-bet 5bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 20bb · CO opens 2.5bb, SB 3-bets to 5bb · Cutoff to act

6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differUTGHJCOBTNSBBB

Pot 9.46bbYour cards?

2.5bb

5bb

1bb

Tap your two cards.

Cutoff's range

448 of 1,326 combos get here

Fold 39.4%Call 22.6%All-in 19.84bb 38%

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, SB 3-bets to 5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

CO opens 2.5bb, SB 3-bets to 5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the cutoff (CO) folds 39.4%, calls 22.6% and goes all-in 19.84bb 38%. Always call: AA, A9s, K3s-K4s, J9s+, T9s, 98s, 87s, QJo. Always all-in 19.84bb: 66-KK, ATs+, A7s-A8s, K9s+, ATo+. Mixed: 55, K5s-K7s, Q8s+, Q5s-Q6s, J8s, T7s, A8o-A9o, A5o, KQo, QTo.

Always fold: J7s, A6o-A7o, A3o-A4o, K9o-KTo, Q9o, J9o+, T9o
Always call: AA, A9s, K3s-K4s, J9s+, T9s, 98s, 87s, QJo
Always all-in 19.84bb: 66-KK, ATs+, A7s-A8s, K9s+, ATo+
Mixed: 55, K5s-K7s, Q8s+, Q5s-Q6s, J8s, T7s, A8o-A9o, A5o, KQo, QTo

Settings: 6-max · 20bb · 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, 20bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.9). 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.