PokerSolver
PokerSolver/4-max · 200bb · 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) · 200bb · CO limps, SB isolates to 2.5bb, CO 3-bets to 5bb · Small blind to act

4-max · 200bb · 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

376 of 1,326 combos get here
Fold 24.9%Call 61.6%Raise 11.5bb 6.7%All-in 199.84bb 6.9%
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 2.5bb, CO 3-bets to 5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

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, 200bb: the small blind (SB) folds 24.9%, calls 61.6%, raises 11.5bb 6.7% and goes all-in 199.84bb 6.9%. Always call: 44-TT, AQs, A9s-ATs, A3s, KTs-KJs, T7s, 85s, KQo. Mixed: JJ+, AKs, AJs, A4s-A8s, A2s, KQs, K9s, K6s-K7s, K2s, Q8s+, J9s+, J7s, T8s+, 97s, 86s+, 75s+, 64s, 54s, ATo+, KJo, QJo, JTo.

Always fold
Q2s, QTo
Always call
44-TT, AQs, A9s-ATs, A3s, KTs-KJs, T7s, 85s, KQo
Always raise 11.5bb
No hand plays this every time
Always all-in 199.84bb
No hand plays this every time
Mixed
JJ+, AKs, AJs, A4s-A8s, A2s, KQs, K9s, K6s-K7s, K2s, Q8s+, J9s+, J7s, T8s+, 97s, 86s+, 75s+, 64s, 54s, ATo+, KJo, QJo, JTo
Settings: 4-max · 200bb · 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, 200bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.