PokerSolver
PokerSolver/6-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BB 4-bet 20.7bb

SB vs BB 4-bet 20.7bb

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

6-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 30.66bbYour cards?
9bb
20.7bb

Tap your two cards.

Small blind's range

598 of 1,326 combos get here
Fold 65.5%Call 21.2%Raise 45.54bb 11.3%All-in 249.84bb 2%
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 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the small blind (SB) folds 65.5%, calls 21.2%, raises 45.54bb 11.3% and goes all-in 249.84bb 2%. Always call: QQ, 77-99, 22-55, AJs-AQs, KQs, QTs+, 87s, 65s. Always raise 45.54bb: KK+, AKs, A7s, K9s. Always all-in 249.84bb: AKo. Mixed: TT-JJ, 66, A8s-ATs, A2s-A6s, KTs-KJs, K7s-K8s, J9s, T8s+, 97s+, 86s, 76s, AQo.

Always fold
K2s-K5s, Q8s, Q6s, Q2s-Q4s, J7s-J8s, J3s-J5s, T6s-T7s, 96s, 85s, 75s, 64s, 54s, A9o-AJo, A4o-A7o, A2o, KQo, K7o-KTo, QTo+, J8o+, T8o+, 98o
Always call
QQ, 77-99, 22-55, AJs-AQs, KQs, QTs+, 87s, 65s
Always raise 45.54bb
KK+, AKs, A7s, K9s
Always all-in 249.84bb
AKo
Mixed
TT-JJ, 66, A8s-ATs, A2s-A6s, KTs-KJs, K7s-K8s, J9s, T8s+, 97s+, 86s, 76s, AQo
Settings: 6-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 29.27). 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.