PokerSolver
PokerSolver/4-max · 100bb · 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) · 100bb · BTN limps, SB isolates to 2.5bb, BTN 3-bets to 5bb, SB 4-bets to 11.5bb, BTN goes all-in · Small blind to act

4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 112.98bbYour cards?
11.5bb
1bb
99.84bb

Tap your two cards.

Small blind's range

392 of 1,326 combos get here
Fold 77.2%Call 22.8%
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 2.5bb, BTN 3-bets to 5bb, SB 4-bets to 11.5bb, BTN goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

BTN limps, SB isolates to 2.5bb, BTN 3-bets to 5bb, SB 4-bets to 11.5bb, BTN goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the small blind (SB) folds 77.2% and calls 22.8%. Always call: QQ+, TT, AQs+, AKo. Mixed: JJ, 88-99, 66, ATs-AJs, A3s, KQs, K8s, K4s, QTs+, JTs, T9s, AQo.

Always fold
77, 55, A5s-A9s, KTs-KJs, K7s, K3s, Q9s, J6s-J9s, T8s, 96s+, 87s, 85s, 75s+, 64s, 54s, 43s, A9o-AJo, KTo+, QTo+
Always call
QQ+, TT, AQs+, AKo
Mixed
JJ, 88-99, 66, ATs-AJs, A3s, KQs, K8s, K4s, QTs+, JTs, T9s, AQo
Settings: 4-max · 100bb · 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, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.