PokerSolver
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 limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb, SB goes all-in · Big blind to act

Fits exactlyno game we have checked
Close1 games
  • CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game
Stacks (bb), if they differ
Pot 100.86bbYour cards?
20.7bb
79.84bb

Tap your two cards.

Big blind's range

642 of 1,326 combos get here
Fold 74.4%Call 25.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb, SB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 80bb?

SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb, SB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 80bb: the big blind (BB) folds 74.4% and calls 25.6%. Always call: 88+, AQs+, A8s, AQo+. Mixed: 33-77, ATs-AJs, A7s, A4s, A2s, K8s+, K4s-K6s, K2s, QTs+, Q7s, J9s+, J5s, T6s, 98s, AJo, A3o, KTo+, QJo, JTo.

Always fold
22, A9s, A5s-A6s, A3s, K7s, K3s, Q9s, Q4s, J6s-J8s, J3s, T7s+, T5s, 96s-97s, 92s, 86s+, 82s, 74s+, 72s, 63s+, 52s+, 43s, A8o-ATo, A5o-A6o, A2o, K9o, K6o, Q9o-QTo, T8o+
Always call
88+, AQs+, A8s, AQo+
Mixed
33-77, ATs-AJs, A7s, A4s, A2s, K8s+, K4s-K6s, K2s, QTs+, Q7s, J9s+, J5s, T6s, 98s, AJo, A3o, KTo+, QJo, JTo
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.

Rake sources for the games it fits: 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.