PokerSolver
PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs BB 3-bet 4bb

SB vs BB 3-bet 4bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · SB opens 2bb, BB 3-bets to 4bb · Small blind to act

4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 6.64bbYour cards?
2bb
4bb

Tap your two cards.

Small blind's range

842 of 1,326 combos get here
Fold 23.6%Call 61.9%Raise 9.2bb 9.7%All-in 99.84bb 4.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when SB opens 2bb, BB 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

SB opens 2bb, BB 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the small blind (SB) folds 23.6%, calls 61.9%, raises 9.2bb 9.7% and goes all-in 99.84bb 4.7%. Always call: 99, 55-66, 22-33, A6s, A3s, K7s-K8s, K3s-K5s, Q8s-Q9s, J8s, J5s, T8s, 85s+, 74s-75s, 65s, 53s, A7o-A8o, A4o-A5o, K8o-KJo, Q9o+, JTo. Always raise 9.2bb: AA, AQs. Always all-in 99.84bb: QQ, AKo. Mixed: KK, TT-JJ, 77-88, 44, AKs, A9s-ATs, A7s, A4s-A5s, A2s, K9s+, K6s, QTs+, J9s+, J3s-J4s, T9s, T3s-T7s, 95s+, 84s, 76s, 63s, 54s, 43s, ATo-AQo, A6o, A2o-A3o, KQo, K5o-K7o, Q8o, Q6o, J8o-J9o, T7o+, 98o, 87o, 76o.

Always fold
94s, Q7o, Q5o, 97o, 65o
Always call
99, 55-66, 22-33, A6s, A3s, K7s-K8s, K3s-K5s, Q8s-Q9s, J8s, J5s, T8s, 85s+, 74s-75s, 65s, 53s, A7o-A8o, A4o-A5o, K8o-KJo, Q9o+, JTo
Always raise 9.2bb
AA, AQs
Always all-in 99.84bb
QQ, AKo
Mixed
KK, TT-JJ, 77-88, 44, AKs, A9s-ATs, A7s, A4s-A5s, A2s, K9s+, K6s, QTs+, J9s+, J3s-J4s, T9s, T3s-T7s, 95s+, 84s, 76s, 63s, 54s, 43s, ATo-AQo, A6o, A2o-A3o, KQo, K5o-K7o, Q8o, Q6o, J8o-J9o, T7o+, 98o, 87o, 76o
Settings: 4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.