PokerSolver
PokerSolver/5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BB 4-bet 20.7bb

SB vs BB 4-bet 20.7bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb · 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 · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 30.5bbYour cards?
9bb
20.7bb

Tap your two cards.

Small blind's range

614 of 1,326 combos get here
Fold 67.3%Call 25.3%All-in 149.84bb 7.4%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 150bb?

SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 150bb: the small blind (SB) folds 67.3%, calls 25.3% and goes all-in 149.84bb 7.4%. Always call: 22-JJ, ATs-AQs, KTs+, QJs, J9s+, T8s+, 98s, 87s, 76s, 54s, AQo. Always all-in 149.84bb: QQ+, AKs, A2s, AKo. Mixed: A3s-A6s, K6s, 86s, 65s.

Always fold
K7s, K5s, K2s-K3s, Q6s-Q8s, Q3s, J7s-J8s, T7s, 96s-97s, 85s, 75s, 64s, 43s, A8o-AJo, A5o-A6o, A3o, K8o+, QTo+, J9o+, T9o, 98o
Always call
22-JJ, ATs-AQs, KTs+, QJs, J9s+, T8s+, 98s, 87s, 76s, 54s, AQo
Always all-in 149.84bb
QQ+, AKs, A2s, AKo
Mixed
A3s-A6s, K6s, 86s, 65s
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.

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.