PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO 3-bet 4bb

SB vs CO 3-bet 4bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 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
5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.8bbYour cards?
2bb
1bb
4bb

Tap your two cards.

Small blind's range

440 of 1,326 combos get here
Fold 22.4%Call 69.6%Raise 9.2bb 4%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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

CO limps, SB isolates to 2bb, CO 3-bets to 4bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the small blind (SB) folds 22.4%, calls 69.6%, raises 9.2bb 4% and goes all-in 249.84bb 3.9%. Always call: 44-QQ, 22, ATs, A6s-A8s, A2s, K8s+, K6s, K4s, QJs, Q8s, J9s, T9s, 85s, ATo-AQo, KTo+, JTo. Mixed: KK+, AJs+, A9s, A4s-A5s, K7s, K2s, Q9s-QTs, Q7s, JTs, J8s, T7s-T8s, T4s, 96s+, 86s+, 74s+, 63s+, 54s, 43s, AKo, A8o, QTo+, T8o, 76o, 54o.

Always fold
T7o
Always call
44-QQ, 22, ATs, A6s-A8s, A2s, K8s+, K6s, K4s, QJs, Q8s, J9s, T9s, 85s, ATo-AQo, KTo+, JTo
Always raise 9.2bb
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
KK+, AJs+, A9s, A4s-A5s, K7s, K2s, Q9s-QTs, Q7s, JTs, J8s, T7s-T8s, T4s, 96s+, 86s+, 74s+, 63s+, 54s, 43s, AKo, A8o, QTo+, T8o, 76o, 54o
Settings: 5-max · 250bb · 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, 250bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.