PokerSolver
PokerSolver/4-max · 250bb · 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) · 250bb · CO limps, SB isolates to 2.5bb, CO 3-bets to 5bb · Small blind to act

4-max · 250bb · 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

420 of 1,326 combos get here
Fold 32.3%Call 59.2%Raise 11.5bb 4.4%All-in 249.84bb 4.1%
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 250bb?

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, 250bb: the small blind (SB) folds 32.3%, calls 59.2%, raises 11.5bb 4.4% and goes all-in 249.84bb 4.1%. Always call: 44-JJ, A7s-A8s, K9s+, K6s, Q9s-QTs, 76s, 64s, AJo-AQo, KQo. Mixed: QQ+, A9s+, A2s-A6s, K8s, K4s, QJs, J8s+, T7s+, 98s, 96s, 86s+, 75s, 65s, 54s, AKo, 65o.

Always fold
Q8s, KTo, JTo
Always call
44-JJ, A7s-A8s, K9s+, K6s, Q9s-QTs, 76s, 64s, AJo-AQo, KQo
Always raise 11.5bb
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
QQ+, A9s+, A2s-A6s, K8s, K4s, QJs, J8s+, T7s+, 98s, 96s, 86s+, 75s, 65s, 54s, AKo, 65o
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.

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.