PokerSolver
PokerSolver/6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BTN vs SB 3-bet 4bb

BTN vs SB 3-bet 4bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 20bb · BTN opens 2bb, SB 3-bets to 4bb · Button to act

6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.96bbYour cards?
2bb
4bb
1bb

Tap your two cards.

Button's range

614 of 1,326 combos get here
Fold 28.7%Call 43.9%All-in 19.84bb 27.4%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the button (BTN) when BTN opens 2bb, SB 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

BTN opens 2bb, SB 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the button (BTN) folds 28.7%, calls 43.9% and goes all-in 19.84bb 27.4%. Always call: KK+, 44, A7s-A9s, KTs+, K3s-K8s, Q9s+, Q6s, J9s+, T8s, 96s+, 86s, 75s, A8o, KTo+, QTo+, JTo, 98o. Always all-in 19.84bb: 88-QQ, 66, AJs-AQs, A6s, A3s-A4s, A9o+, A4o. Mixed: 77, 55, AKs, ATs, A5s, Q8s, Q4s-Q5s, J7s-J8s, T9s, T7s, 87s, A5o-A7o, K8o, J9o.

Always fold
Q7s, J5s-J6s, T5s-T6s, A2o-A3o, K9o, K6o-K7o, Q8o-Q9o, J8o, T8o+
Always call
KK+, 44, A7s-A9s, KTs+, K3s-K8s, Q9s+, Q6s, J9s+, T8s, 96s+, 86s, 75s, A8o, KTo+, QTo+, JTo, 98o
Always all-in 19.84bb
88-QQ, 66, AJs-AQs, A6s, A3s-A4s, A9o+, A4o
Mixed
77, 55, AKs, ATs, A5s, Q8s, Q4s-Q5s, J7s-J8s, T9s, T7s, 87s, A5o-A7o, K8o, J9o
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.

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.