PokerSolver
PokerSolver/6-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BTN 3-bet 4bb

SB vs BTN 3-bet 4bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb · Small blind to act

6-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.96bbYour cards?
2bb
1bb
4bb

Tap your two cards.

Small blind's range

614 of 1,326 combos get here
Fold 18.7%Call 71.4%Raise 9.2bb 5.6%All-in 249.84bb 4.3%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the small blind (SB) folds 18.7%, calls 71.4%, raises 9.2bb 5.6% and goes all-in 249.84bb 4.3%. Always call: 99-TT, 22-77, AJs, A6s-A7s, A2s-A4s, K9s-KJs, K6s-K7s, QTs+, Q8s, J7s-J8s, T7s, 86s, 64s+, 53s, AQo, A7o-A9o, A4o-A5o, KJo+, QTo+. Mixed: JJ+, 88, AQs+, A8s-ATs, A5s, KQs, K8s, K3s-K5s, Q9s, Q7s, Q3s-Q4s, J9s+, J6s, T8s+, T5s-T6s, T3s, 96s+, 87s, 85s, 74s+, 63s, 54s, 52s, AKo, ATo-AJo, K9o-KTo, Q9o, J9o+, T8o+, 76o.

Always fold
65o
Always call
99-TT, 22-77, AJs, A6s-A7s, A2s-A4s, K9s-KJs, K6s-K7s, QTs+, Q8s, J7s-J8s, T7s, 86s, 64s+, 53s, AQo, A7o-A9o, A4o-A5o, KJo+, QTo+
Always raise 9.2bb
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
JJ+, 88, AQs+, A8s-ATs, A5s, KQs, K8s, K3s-K5s, Q9s, Q7s, Q3s-Q4s, J9s+, J6s, T8s+, T5s-T6s, T3s, 96s+, 87s, 85s, 74s+, 63s, 54s, 52s, AKo, ATo-AJo, K9o-KTo, Q9o, J9o+, T8o+, 76o
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.