PokerSolver
PokerSolver/6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BB 3-bet 4bb

SB vs BB 3-bet 4bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · SB opens 2bb, BB 3-bets to 4bb · Small blind to act

6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 6.96bbYour cards?
2bb
4bb

Tap your two cards.

Small blind's range

526 of 1,326 combos get here
Fold 7.6%Call 69.1%Raise 9.2bb 8.7%All-in 39.84bb 14.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when SB opens 2bb, BB 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?

SB opens 2bb, BB 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the small blind (SB) folds 7.6%, calls 69.1%, raises 9.2bb 8.7% and goes all-in 39.84bb 14.6%. Always call: A8s-A9s, A4s, T3s, 84s, 43s, A2o, K6o. Always raise 9.2bb: KK. Mixed: 88, 55-66, K7s-K8s, Q9s, J9s, T8s+, ATo, A4o, KJo, K5o, QJo, Q5o-Q6o, JTo, J7o, 97o+, 65o.

Always fold
No hand plays this every time
Always call
A8s-A9s, A4s, T3s, 84s, 43s, A2o, K6o
Always raise 9.2bb
KK
Always all-in 39.84bb
No hand plays this every time
Mixed
88, 55-66, K7s-K8s, Q9s, J9s, T8s+, ATo, A4o, KJo, K5o, QJo, Q5o-Q6o, JTo, J7o, 97o+, 65o
Settings: 6-max · 40bb · 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, 40bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.93). 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.