PokerSolver
PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB 4-bet 11.5bb

BB vs SB 4-bet 11.5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb · Big blind to act

5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 17.3bbYour cards?
5bb
11.5bb

Tap your two cards.

Big blind's range

968 of 1,326 combos get here
Fold 62.9%Call 31.8%All-in 79.84bb 5.4%
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 4-bets to 11.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the big blind (BB) folds 62.9%, calls 31.8% and goes all-in 79.84bb 5.4%. Always call: 88-99, 33-66, AQs, A6s, KQs, K9s-KTs, QTs+, J9s+, 98s, 86s, 76s, 64s+, 54s, ATo-AJo, KQo, KTo, QJo. Always all-in 79.84bb: KK, AKs, AKo. Mixed: AA, TT-QQ, A7s-AJs, A5s, A2s-A3s, KJs, K7s-K8s, K3s-K5s, Q3s, T6s, 96s, 84s-85s, 75s, 52s, 43s, AQo, A9o, A4o-A5o.

Always fold
J4s, T4s, T2s, 95s, 92s, 82s, 72s, A6o, A2o, K4o-K5o, K2o, Q2o-Q5o, J8o-J9o, J4o-J6o, J2o, T4o+, 95o+, 85o-86o, 76o, 53o+, 43o
Always call
88-99, 33-66, AQs, A6s, KQs, K9s-KTs, QTs+, J9s+, 98s, 86s, 76s, 64s+, 54s, ATo-AJo, KQo, KTo, QJo
Always all-in 79.84bb
KK, AKs, AKo
Mixed
AA, TT-QQ, A7s-AJs, A5s, A2s-A3s, KJs, K7s-K8s, K3s-K5s, Q3s, T6s, 96s, 84s-85s, 75s, 52s, 43s, AQo, A9o, A4o-A5o
Settings: 5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.