BTN vs SB all-in
4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (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
4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 102.18bbYour cards?
20.7bb
79.84bb
1bb
Tap your two cards.
Button's range
344 of 1,326 combos get hereFold 80.2%Call 19.8%
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 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?
BTN opens 3bb, SB 3-bets to 9bb, BTN 4-bets to 20.7bb, SB goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the button (BTN) folds 80.2% and calls 19.8%. Always call: 99+, AQs+, AQo+.
- Always fold
- K2s-K7s, Q2s-Q8s, A3o-ATo, KTo-KJo, Q9o+
- Always call
- 99+, AQs+, AQo+
Settings: 4-max · 80bb · 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, 80bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.