PokerSolver/4-max · 100bb · 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) · 100bb · BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb · Small blind to act

Fits exactlyno game we have checked

Close1 games

CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here

4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differCOBTNSBBB

Pot 7.64bbYour cards?

2bb

1bb

4bb

Tap your two cards.

Small blind's range

530 of 1,326 combos get here

Fold 34.1%Call 42%Raise 9.2bb 13.3%All-in 99.84bb 10.5%

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 100bb?

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, 100bb: the small blind (SB) folds 34.1%, calls 42%, raises 9.2bb 13.3% and goes all-in 99.84bb 10.5%. Always call: 88, 33-55, A4s-A5s, Q5s, J9s, T8s, 74s. Mixed: 99+, 66-77, A6s+, A2s-A3s, K7s+, K3s-K5s, Q7s+, Q3s-Q4s, JTs, J7s-J8s, T9s, T6s-T7s, 95s+, 87s, 75s+, 64s+, 54s, 43s, A9o+, A5o, A3o, KTo+, Q9o+, JTo, T9o.

Always fold: 86s, 63s, 53s, J9o, 98o
Always call: 88, 33-55, A4s-A5s, Q5s, J9s, T8s, 74s
Always raise 9.2bb: No hand plays this every time
Always all-in 99.84bb: No hand plays this every time
Mixed: 99+, 66-77, A6s+, A2s-A3s, K7s+, K3s-K5s, Q7s+, Q3s-Q4s, JTs, J7s-J8s, T9s, T6s-T7s, 95s+, 87s, 75s+, 64s+, 54s, 43s, A9o+, A5o, A3o, KTo+, Q9o+, JTo, T9o

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.

Rake sources for the games it fits: 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.