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

SB vs BB all-in

Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb, BB goes all-in · Small blind / button to act

Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game
Stacks (bb), if they differ
Pot 85.16bbYour cards?
5bb
79.84bb

Tap your two cards.

Small blind / button's range

840 of 1,326 combos get here
Fold 88.5%Call 11.5%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind / button (SB) when SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb, BB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 80bb?

SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb, BB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 80bb: the small blind / button (SB) folds 88.5% and calls 11.5%. Always call: 66+, 44, AQs+, AQo+. Mixed: A9s, AJo.

Always fold
K5s-K7s, K3s, Q6s-Q7s, Q2s-Q4s, J6s, J2s-J4s, T6s, T2s-T3s, 93s-95s, 87s, 83s, 72s-74s, 62s-63s, 52s, A9o-ATo, A2o-A7o, K8o+, K6o, K3o-K4o, QJo, Q8o-Q9o, Q2o-Q3o, JTo, J6o, J4o, J2o, T9o, T6o, T4o, 97o+, 86o, 76o, 64o+
Always call
66+, 44, AQs+, AQo+
Mixed
A9s, AJo
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.