PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs CO 3-bet 5bb

SB vs CO 3-bet 5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · CO limps, SB isolates to 2.5bb, CO 3-bets to 5bb · Small blind to act

4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 9.14bbYour cards?
2.5bb
1bb
5bb

Tap your two cards.

Small blind's range

356 of 1,326 combos get here
Fold 28.6%Call 53.9%Raise 11.5bb 9.9%All-in 149.84bb 7.6%
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 2.5bb, CO 3-bets to 5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

CO limps, SB isolates to 2.5bb, CO 3-bets to 5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the small blind (SB) folds 28.6%, calls 53.9%, raises 11.5bb 9.9% and goes all-in 149.84bb 7.6%. Always call: TT-JJ, 77, 55, A6s, KJs, K3s, QJs, AQo. Mixed: QQ+, 88-99, 66, A7s+, A2s-A5s, KQs, K7s-KTs, K5s, Q8s-QTs, Q6s, J8s+, T8s+, 96s+, 86s+, 74s+, 65s, 53s+, AKo, ATo-AJo, A8o, KQo.

Always fold
T7s, KTo, JTo
Always call
TT-JJ, 77, 55, A6s, KJs, K3s, QJs, AQo
Always raise 11.5bb
No hand plays this every time
Always all-in 149.84bb
No hand plays this every time
Mixed
QQ+, 88-99, 66, A7s+, A2s-A5s, KQs, K7s-KTs, K5s, Q8s-QTs, Q6s, J8s+, T8s+, 96s+, 86s+, 74s+, 65s, 53s+, AKo, ATo-AJo, A8o, KQo
Settings: 4-max · 150bb · 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, 150bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.5). 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.