PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs CO 3-bet 4bb

SB vs CO 3-bet 4bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO limps, SB isolates to 2bb, CO 3-bets to 4bb · Small blind to act

Fits exactlyno game we have checked

Close1 games

CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here

4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differCOBTNSBBB

Pot 7.64bbYour cards?

2bb

1bb

4bb

Tap your two cards.

Small blind's range

494 of 1,326 combos get here

Fold 23.6%Call 67.5%Raise 9.2bb 5.1%All-in 249.84bb 3.9%

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

What is the GTO play for the small blind (SB) when CO limps, SB isolates to 2bb, CO 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

CO limps, SB isolates to 2bb, CO 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the small blind (SB) folds 23.6%, calls 67.5%, raises 9.2bb 5.1% and goes all-in 249.84bb 3.9%. Always call: TT, 66-77, 44, ATs, A7s-A8s, A2s, KQs, K9s, Q9s-QTs, T9s, 97s, 86s, 65s, 54s, ATo-AQo, A5o, KTo+, QJo. Mixed: JJ+, 88-99, 55, 33, AJs+, A9s, A3s-A6s, KTs-KJs, K5s-K8s, QJs, Q8s, Q4s, J9s+, J3s, T7s-T8s, 98s, 87s, 85s, 75s+, 64s, 43s, AKo, QTo, JTo, 65o, 54o.

Always fold: Q9o, T9o, 87o
Always call: TT, 66-77, 44, ATs, A7s-A8s, A2s, KQs, K9s, Q9s-QTs, T9s, 97s, 86s, 65s, 54s, ATo-AQo, A5o, KTo+, QJo
Always raise 9.2bb: No hand plays this every time
Always all-in 249.84bb: No hand plays this every time
Mixed: JJ+, 88-99, 55, 33, AJs+, A9s, A3s-A6s, KTs-KJs, K5s-K8s, QJs, Q8s, Q4s, J9s+, J3s, T7s-T8s, 98s, 87s, 85s, 75s+, 64s, 43s, AKo, QTo, JTo, 65o, 54o

Settings: 4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 250bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). 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.

Rake sources for the games it fits: 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.