PokerSolver/Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb/BB vs SB all-in

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 2bb, BB 3-bets to 4bb, SB goes all-in · Big blind to act

Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differSBBB

Pot 84.16bbYour cards?

4bb

79.84bb

Tap your two cards.

Big blind's range

870 of 1,326 combos get here

Fold 85.9%Call 14.1%

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 2bb, BB 3-bets to 4bb, SB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 80bb?

SB opens 2bb, BB 3-bets to 4bb, SB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 80bb: the big blind (BB) folds 85.9% and calls 14.1%. Always call: 99+, AJs+, AKo. Mixed: 66-88, 44, A9s-ATs, A2s, KTs+, QTs+, 85s, AJo-AQo, KQo.

Always fold: 55, A3s-A8s, K5s-K8s, Q5s-Q9s, Q2s-Q3s, J7s+, J2s-J5s, T4s+, 98s, 96s, 92s-93s, 86s+, 82s-84s, 72s+, 64s, 52s+, 43s, 32s, A7o-A9o, A5o, K9o-KJo, K7o, QTo+, J9o+, T8o+, 96o+, 87o, 85o, 75o+, 65o, 54o
Always call: 99+, AJs+, AKo
Mixed: 66-88, 44, A9s-ATs, A2s, KTs+, QTs+, 85s, AJo-AQo, KQo

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.