PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs BTN all-in

SB vs BTN all-in

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb, SB 4-bets to 9.2bb, BTN goes all-in · Small blind to act

4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 160.68bbYour cards?
9.2bb
1bb
149.84bb

Tap your two cards.

Small blind's range

416 of 1,326 combos get here
Fold 84.9%Call 15.1%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb, SB 4-bets to 9.2bb, BTN goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb, SB 4-bets to 9.2bb, BTN goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the small blind (SB) folds 84.9% and calls 15.1%. Always call: JJ+, AKs, AKo. Mixed: 99-TT, 66-77, 44, ATs-AJs, A8s, A6s, KQs, K7s, JTs, T9s.

Always fold
88, 55, AQs, A9s, A7s, A3s-A5s, K8s-KJs, K4s-K5s, Q7s+, Q4s, J7s-J9s, T7s-T8s, 96s+, 86s+, 75s+, 64s+, 54s, ATo-AQo, A8o, KTo+, QTo+
Always call
JJ+, AKs, AKo
Mixed
99-TT, 66-77, 44, ATs-AJs, A8s, A6s, KQs, K7s, JTs, T9s
Settings: 4-max · 150bb · 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, 150bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.5). 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.