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

BTN vs SB 3-bet 4bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · BTN opens 2bb, SB 3-bets to 4bb · Button to act

5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.8bbYour cards?
2bb
4bb
1bb

Tap your two cards.

Button's range

586 of 1,326 combos get here
Fold <0.1%Call 91.2%Raise 9.2bb 8.7%All-in 99.84bb 0.1%
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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 100bb?

BTN opens 2bb, SB 3-bets to 4bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the button (BTN) folds 0%, calls 91.2%, raises 9.2bb 8.7% and goes all-in 99.84bb 0.1%. Always call: 22-99, A2s-A9s, K4s-K8s, Q5s-QTs, J5s-J8s, T6s-T8s, 96s+, 87s, 85s, 75s+, 64s+, 53s, A5o-ATo, K7o+, Q9o+, J9o+, T9o, 98o. Always raise 9.2bb: KK+, AKs. Mixed: TT, AJo-AQo.

Always fold
No hand plays this every time
Always call
22-99, A2s-A9s, K4s-K8s, Q5s-QTs, J5s-J8s, T6s-T8s, 96s+, 87s, 85s, 75s+, 64s+, 53s, A5o-ATo, K7o+, Q9o+, J9o+, T9o, 98o
Always raise 9.2bb
KK+, AKs
Always all-in 99.84bb
No hand plays this every time
Mixed
TT, AJo-AQo
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.

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.