PokerSolver
PokerSolver/6-max · 40bb · 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) · 40bb · BTN opens 2bb, SB 3-bets to 4bb · Button to act

6-max · 40bb · 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

438 of 1,326 combos get here
Fold 2.1%Call 90%Raise 9.2bb 6.8%All-in 39.84bb 1.1%
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 40bb?

BTN opens 2bb, SB 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the button (BTN) folds 2.1%, calls 90%, raises 9.2bb 6.8% and goes all-in 39.84bb 1.1%. Always call: 55, A8s-A9s, A2s-A4s, K8s-KJs, K5s-K6s, Q8s+, Q6s, J8s+, J5s-J6s, T9s, T5s-T7s, 97s, 86s+, 76s, 65s, 54s, A9o, KJo, QTo+, Q7o, J9o, T8o+, 98o. Always raise 9.2bb: JJ. Mixed: AA, 66, AJs, A7o-A8o, A5o, K8o-K9o.

Always fold
No hand plays this every time
Always call
55, A8s-A9s, A2s-A4s, K8s-KJs, K5s-K6s, Q8s+, Q6s, J8s+, J5s-J6s, T9s, T5s-T7s, 97s, 86s+, 76s, 65s, 54s, A9o, KJo, QTo+, Q7o, J9o, T8o+, 98o
Always raise 9.2bb
JJ
Always all-in 39.84bb
No hand plays this every time
Mixed
AA, 66, AJs, A7o-A8o, A5o, K8o-K9o
Settings: 6-max · 40bb · 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, 40bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.93). 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.