BTN vs SB all-in
5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · BTN opens 3bb, SB 3-bets to 9bb, BTN 4-bets to 20.7bb, SB goes all-in · Button to act
5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 102.34bbYour cards?
20.7bb
79.84bb
1bb
Tap your two cards.
Button's range
338 of 1,326 combos get hereFold 78.1%Call 21.9%
Tap a hand, or type one above, to see its exact mix.
What is the GTO play for the button (BTN) when BTN opens 3bb, SB 3-bets to 9bb, BTN 4-bets to 20.7bb, SB goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?
BTN opens 3bb, SB 3-bets to 9bb, BTN 4-bets to 20.7bb, SB goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the button (BTN) folds 78.1% and calls 21.9%. Always call: 99+, AQs+, AQo+.
- Always fold
- K7s, K3s-K5s, Q2s-Q7s, A3o-ATo, K8o-KJo, K6o, Q8o+
- Always call
- 99+, AQs+, AQo+
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.
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.