PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs BTN 3-bet 4bb

SB vs BTN 3-bet 4bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb · Small blind to act

4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 7.64bbYour cards?
2bb
1bb
4bb

Tap your two cards.

Small blind's range

580 of 1,326 combos get here
Fold 22.8%Call 66.2%Raise 9.2bb 6.1%All-in 249.84bb 4.9%
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 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the small blind (SB) folds 22.8%, calls 66.2%, raises 9.2bb 6.1% and goes all-in 249.84bb 4.9%. Always call: 66-TT, 33-44, AQs, A7s, A4s, A2s, KJs, K9s, K7s, K3s-K4s, Q9s+, JTs, J7s, T8s, 75s, 54s, ATo-AJo, A8o, A4o, K8o, QTo+. Mixed: JJ+, 55, AKs, A8s-AJs, A5s-A6s, A3s, KQs, KTs, K8s, K5s-K6s, K2s, Q8s, Q4s-Q5s, Q2s, J8s-J9s, J4s-J5s, J2s, T9s, T6s-T7s, 97s+, 95s, 86s+, 76s, 74s, 63s+, 53s, AQo+, A7o, A5o, K9o+, JTo, T9o, 98o, 87o, 65o.

Always fold
96s, T8o
Always call
66-TT, 33-44, AQs, A7s, A4s, A2s, KJs, K9s, K7s, K3s-K4s, Q9s+, JTs, J7s, T8s, 75s, 54s, ATo-AJo, A8o, A4o, K8o, QTo+
Always raise 9.2bb
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
JJ+, 55, AKs, A8s-AJs, A5s-A6s, A3s, KQs, KTs, K8s, K5s-K6s, K2s, Q8s, Q4s-Q5s, Q2s, J8s-J9s, J4s-J5s, J2s, T9s, T6s-T7s, 97s+, 95s, 86s+, 76s, 74s, 63s+, 53s, AQo+, A7o, A5o, K9o+, JTo, T9o, 98o, 87o, 65o
Settings: 4-max · 250bb · 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, 250bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). 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.