SB vs BB all-in
4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb, BB goes all-in · Small blind to act
4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 101.18bbYour cards?
20.7bb
79.84bb
Tap your two cards.
Small blind's range
418 of 1,326 combos get hereFold 81.3%Call 18.7%
Tap a hand, or type one above, to see its exact mix.
What is the GTO play for the small blind (SB) when SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb, BB goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?
SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb, BB goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the small blind (SB) folds 81.3% and calls 18.7%. Always call: 88+, AQs+, AQo+.
- Always fold
- A8s, A3s-A4s, K7s-K8s, K2s-K5s, Q7s-Q9s, Q4s, J5s, 97s, A7o-AJo, A3o-A5o, K8o+, Q9o+, JTo
- Always call
- 88+, 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.