PokerSolver
PokerSolver/5-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BTN 4-bet 11.5bb

SB vs BTN 4-bet 11.5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 60bb · BTN opens 2.5bb, SB 3-bets to 5bb, BTN 4-bets to 11.5bb · Small blind to act

5-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 18.3bbYour cards?
5bb
1bb
11.5bb

Tap your two cards.

Small blind's range

218 of 1,326 combos get here
Fold 34.5%Call 54.1%All-in 59.84bb 11.4%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when BTN opens 2.5bb, SB 3-bets to 5bb, BTN 4-bets to 11.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 60bb?

BTN opens 2.5bb, SB 3-bets to 5bb, BTN 4-bets to 11.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 60bb: the small blind (SB) folds 34.5%, calls 54.1% and goes all-in 59.84bb 11.4%. Always call: JJ, 55-99, A9s-AJs, KTs-KJs, QJs. Always all-in 59.84bb: AKs. Mixed: AA, AQs, A8s, A4s-A5s, K9s, Q9s-QTs, J9s+, T9s, AQo.

Always fold
A9o, KTo-KJo, QJo
Always call
JJ, 55-99, A9s-AJs, KTs-KJs, QJs
Always all-in 59.84bb
AKs
Mixed
AA, AQs, A8s, A4s-A5s, K9s, Q9s-QTs, J9s+, T9s, AQo
Settings: 5-max · 60bb · 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, 60bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.3). 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.