PokerSolver/5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BTN 3-bet 4bb

SB vs BTN 3-bet 4bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 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

5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differHJCOBTNSBBB

Pot 7.8bbYour cards?

2bb

1bb

4bb

Tap your two cards.

Small blind's range

546 of 1,326 combos get here

Fold 40%Call 38.6%Raise 9.2bb 10.9%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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 100bb?

BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the small blind (SB) folds 40%, calls 38.6%, raises 9.2bb 10.9% and goes all-in 99.84bb 10.5%. Always call: 99, 77, 44, A8s, A5s, KTs, K4s, 97s, 75s, 54s, KJo. Always raise 9.2bb: AA. Always all-in 99.84bb: KK. Mixed: TT-QQ, 88, 55-66, A9s+, A6s-A7s, A3s-A4s, KJs+, K5s-K9s, Q6s+, Q4s, J7s+, T7s+, 98s, 95s-96s, 86s+, 76s, 74s, 65s, A9o+, A7o, A5o, KQo, KTo, QTo+, JTo.

Always fold: K2s, J6s, 85s, 64s, 53s, T9o, 98o, 65o
Always call: 99, 77, 44, A8s, A5s, KTs, K4s, 97s, 75s, 54s, KJo
Always raise 9.2bb: AA
Always all-in 99.84bb: KK
Mixed: TT-QQ, 88, 55-66, A9s+, A6s-A7s, A3s-A4s, KJs+, K5s-K9s, Q6s+, Q4s, J7s+, T7s+, 98s, 95s-96s, 86s+, 76s, 74s, 65s, A9o+, A7o, A5o, KQo, KTo, QTo+, JTo

Settings: 5-max · 100bb · 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, 100bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 23.9). 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.