PokerSolver
PokerSolver/6-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BB 4-bet 27.6bb

SB vs BB 4-bet 27.6bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · SB limps, BB isolates to 4bb, SB 3-bets to 12bb, BB 4-bets to 27.6bb · Small blind to act

6-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 40.56bbYour cards?
12bb
27.6bb

Tap your two cards.

Small blind's range

552 of 1,326 combos get here
Fold 75.2%Call 7.1%All-in 99.84bb 17.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when SB limps, BB isolates to 4bb, SB 3-bets to 12bb, BB 4-bets to 27.6bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 100bb?

SB limps, BB isolates to 4bb, SB 3-bets to 12bb, BB 4-bets to 27.6bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the small blind (SB) folds 75.2%, calls 7.1% and goes all-in 99.84bb 17.7%. Always call: ATs, QJs, 98s. Always all-in 99.84bb: 88+, 55, AQs+, A5s, AKo. Mixed: 66-77, AJs, A8s, A4s, KJs+, QTs, JTs, T9s, 86s+, 76s, 65s, AQo.

Always fold
A6s-A7s, A2s-A3s, K2s-K9s, Q8s-Q9s, Q2s-Q5s, J7s-J9s, J5s, T6s-T8s, 96s, 85s, 75s, 64s, 54s, A4o-AJo, K8o+, Q9o+, J9o+, T8o+
Always call
ATs, QJs, 98s
Always all-in 99.84bb
88+, 55, AQs+, A5s, AKo
Mixed
66-77, AJs, A8s, A4s, KJs+, QTs, JTs, T9s, 86s+, 76s, 65s, AQo
Settings: 6-max · 100bb · 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, 100bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.89). 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.

Tree: Two HRC solves of this game in one, callers first: the callers solve (its raises grow by 1bb, or 1x, for each player who called before) has every one of the 1,323 spots here, so the base solve gives none of them.

This spot: from the callers solve (sizes: opens 2.0bb + 1.0bb, 2.5bb + 1.0bb, 3.0bb + 1.0bb; 3-bets 2.0x + 1.0x, 3.0x + 1.0x; 4-bets 2.3x, all-in; 5-bets all-in; HRC CI 24.58).