PokerSolver
PokerSolver/5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO 3-bet 5bb

SB vs CO 3-bet 5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 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

5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 9.3bbYour cards?
2.5bb
1bb
5bb

Tap your two cards.

Small blind's range

380 of 1,326 combos get here
Fold 32.8%Call 50.3%Raise 11.5bb 9%All-in 149.84bb 8%
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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 150bb?

CO limps, SB isolates to 2.5bb, CO 3-bets to 5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 150bb: the small blind (SB) folds 32.8%, calls 50.3%, raises 11.5bb 9% and goes all-in 149.84bb 8%. Always call: 99, 77, 44-55, ATs, K9s, K5s, Q8s, 76s. Always all-in 149.84bb: AKo. Mixed: TT+, 88, 66, AJs+, A7s-A9s, A2s-A5s, KTs+, K7s-K8s, Q9s+, J8s+, T6s+, 97s+, 86s+, 74s-75s, 65s, 53s+, ATo-AQo, KJo+, QJo.

Always fold
Q4s, KTo, QTo, JTo
Always call
99, 77, 44-55, ATs, K9s, K5s, Q8s, 76s
Always raise 11.5bb
No hand plays this every time
Always all-in 149.84bb
AKo
Mixed
TT+, 88, 66, AJs+, A7s-A9s, A2s-A5s, KTs+, K7s-K8s, Q9s+, J8s+, T6s+, 97s+, 86s+, 74s-75s, 65s, 53s+, ATo-AQo, KJo+, QJo
Settings: 5-max · 150bb · 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, 150bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.89). 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.