PokerSolver
PokerSolver/6-max · 20bb · 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) · 20bb · 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
6-max · 20bb · 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

432 of 1,326 combos get here
Fold 27.1%Call 26.5%All-in 19.84bb 46.5%
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 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the small blind (SB) folds 27.1%, calls 26.5% and goes all-in 19.84bb 46.5%. Always call: KTo. Always all-in 19.84bb: QQ-KK, 77-88, 55, A9s, A5s, A8o+. Mixed: JJ, 66, ATs+, A6s-A8s, A2s-A4s, K5s+, K3s, Q8s+, J7s+, T8s+, 98s, 86s+, 75s+, A4o-A7o, KQo, QTo, T9o.

Always fold
65s
Always call
KTo
Always all-in 19.84bb
QQ-KK, 77-88, 55, A9s, A5s, A8o+
Mixed
JJ, 66, ATs+, A6s-A8s, A2s-A4s, K5s+, K3s, Q8s+, J7s+, T8s+, 98s, 86s+, 75s+, A4o-A7o, KQo, QTo, T9o
Settings: 6-max · 20bb · 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, 20bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.9). 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.