PokerSolver
PokerSolver/4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB all-in

BB vs SB 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 2.5bb, BB 3-bets to 5bb, 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
4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 85.48bbYour cards?
5bb
79.84bb

Tap your two cards.

Big blind's range

910 of 1,326 combos get here
Fold 92%Call 8%
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 2.5bb, BB 3-bets to 5bb, SB goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

SB opens 2.5bb, BB 3-bets to 5bb, SB goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the big blind (BB) folds 92% and calls 8%. Always call: 99+, AQs+, AQo+. Mixed: 88, AJs.

Always fold
33-77, A2s-ATs, K9s+, K6s-K7s, K3s-K4s, Q7s+, Q3s-Q4s, J8s+, J6s, J4s, T8s+, T5s, T2s, 96s+, 92s-93s, 86s+, 83s-84s, 75s+, 72s, 65s, 54s, 43s, A9o-AJo, A2o-A4o, KJo+, K9o, K2o-K6o, Q3o-Q5o, J7o+, J3o-J5o, T9o, T4o-T7o, 98o, 96o, 85o-86o, 75o, 64o
Always call
99+, AQs+, AQo+
Mixed
88, AJs
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.

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.