PokerSolver
PokerSolver/5-max · 80bb · 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) · 80bb · 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
Tournament
5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.8bbYour cards?
2bb
1bb
4bb

Tap your two cards.

Small blind's range

450 of 1,326 combos get here
Fold 27.7%Call 40.9%Raise 9.2bb 18.2%All-in 79.84bb 13.2%
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 80bb?

BTN limps, SB isolates to 2bb, BTN 3-bets to 4bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the small blind (SB) folds 27.7%, calls 40.9%, raises 9.2bb 18.2% and goes all-in 79.84bb 13.2%. Always call: 88-99, KJs, Q6s. Always raise 9.2bb: KK+, AJs. Mixed: TT-QQ, 44-77, AQs+, A2s-ATs, KQs, K4s-KTs, K2s, Q8s+, Q3s, J7s+, T6s+, 96s+, 85s+, 74s+, 64s+, 53s+, A8o+, A5o, KTo+, QTo+, JTo.

Always fold
No hand plays this every time
Always call
88-99, KJs, Q6s
Always raise 9.2bb
KK+, AJs
Always all-in 79.84bb
No hand plays this every time
Mixed
TT-QQ, 44-77, AQs+, A2s-ATs, KQs, K4s-KTs, K2s, Q8s+, Q3s, J7s+, T6s+, 96s+, 85s+, 74s+, 64s+, 53s+, A8o+, A5o, KTo+, QTo+, JTo
Settings: 5-max · 80bb · 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, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.