BB vs SB all-in
Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · SB opens 3bb, BB 3-bets to 9bb, SB goes all-in · Big blind to act
Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game
Stacks (bb), if they differ
Pot 89.16bbYour cards?
9bb
79.84bb
Tap your two cards.
Big blind's range
850 of 1,326 combos get hereFold 88.3%Call 11.7%
Tap a hand, or type one above, to see its exact mix.
What is the GTO play for the big blind (BB) when SB opens 3bb, BB 3-bets to 9bb, SB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 80bb?
SB opens 3bb, BB 3-bets to 9bb, SB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 80bb: the big blind (BB) folds 88.3% and calls 11.7%. Always call: 88+, ATs+, KQs, AQo+. Mixed: 55-77, KJs.
- Always fold
- 22-44, A2s-A9s, K2s-KTs, QTs+, Q2s-Q8s, J4s+, T2s+, 92s+, 84s+, 72s+, 64s+, 62s, 52s+, 42s+, A2o-AJo, K8o+, K5o-K6o, K3o, Q7o+, Q4o, J8o+, T7o+, 97o+, 86o+, 76o, 65o
- Always call
- 88+, ATs+, KQs, AQo+
- Mixed
- 55-77, KJs
Settings: Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 2bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 22.38). 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.