PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BTN all-in

SB vs BTN all-in

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN limps, SB isolates to 3bb, BTN 3-bets to 9bb, SB 4-bets to 20.7bb, BTN goes all-in · Small blind to act

5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 272.34bbYour cards?
20.7bb
1bb
249.84bb

Tap your two cards.

Small blind's range

312 of 1,326 combos get here
Fold 75.5%Call 24.5%
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 3bb, BTN 3-bets to 9bb, SB 4-bets to 20.7bb, BTN goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

BTN limps, SB isolates to 3bb, BTN 3-bets to 9bb, SB 4-bets to 20.7bb, BTN goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the small blind (SB) folds 75.5% and calls 24.5%. Always call: KK+, AKs. Mixed: JJ-QQ, 66-99, ATs-AQs, A5s, KTs-KJs, QJs, Q9s, J9s, T6s, 87s, 75s, AQo+.

Always fold
55, A6s-A8s, A2s-A4s, KQs, K9s, K4s-K5s, Q8s, JTs, J8s, T9s, T7s, 98s, 86s, 76s, 65s, 54s, AJo, KQo, KTo, QTo, JTo
Always call
KK+, AKs
Mixed
JJ-QQ, 66-99, ATs-AQs, A5s, KTs-KJs, QJs, Q9s, J9s, T6s, 87s, 75s, AQo+
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.

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.