PokerSolver
PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BTN vs SB 3-bet 4bb

BTN vs SB 3-bet 4bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · BTN opens 2bb, SB 3-bets to 4bb · Button to act

4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 7.64bbYour cards?
2bb
4bb
1bb

Tap your two cards.

Button's range

662 of 1,326 combos get here
Fold 0.1%Call 92.3%Raise 9.2bb 7.5%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 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

BTN opens 2bb, SB 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the button (BTN) folds 0.1%, calls 92.3%, raises 9.2bb 7.5% and goes all-in 99.84bb 0.1%. Always call: 22-TT, A2s-ATs, K2s-K9s, Q3s-Q9s, J5s-J9s, T5s+, 95s+, 85s+, 75s+, 64s+, 53s+, 43s, A4o-AQo, K7o+, Q9o+, J8o+, T9o, 98o. Always raise 9.2bb: KK+, JJ, AKs, AKo. Mixed: KJs.

Always fold
No hand plays this every time
Always call
22-TT, A2s-ATs, K2s-K9s, Q3s-Q9s, J5s-J9s, T5s+, 95s+, 85s+, 75s+, 64s+, 53s+, 43s, A4o-AQo, K7o+, Q9o+, J8o+, T9o, 98o
Always raise 9.2bb
KK+, JJ, AKs, AKo
Always all-in 99.84bb
No hand plays this every time
Mixed
KJs
Settings: 4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.