PokerSolver
PokerSolver/4-max · 250bb · 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) · 250bb · 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 · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 260.68bbYour cards?
9.2bb
1bb
249.84bb

Tap your two cards.

Small blind's range

388 of 1,326 combos get here
Fold 88.3%Call 11.7%
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 250bb?

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, 250bb: the small blind (SB) folds 88.3% and calls 11.7%. Always call: AA. Mixed: 99-KK, 55, AKs, AJs, A9s, KQs, Q8s, T8s, 97s, AKo.

Always fold
77-88, 33, AQs, A7s-A8s, A5s, A2s-A3s, K9s-KJs, K5s-K7s, QJs, Q9s, Q5s, J9s+, J7s, J4s, 76s, 74s, 63s-64s, 54s, AJo-AQo, A8o, KJo+, QTo, T9o
Always call
AA
Mixed
99-KK, 55, AKs, AJs, A9s, KQs, Q8s, T8s, 97s, AKo
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.