PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB 4-bet 11.5bb

BB vs SB 4-bet 11.5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb · Big blind to act

4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 17.14bbYour cards?
5bb
11.5bb

Tap your two cards.

Big blind's range

806 of 1,326 combos get here
Fold 55.8%Call 36.4%Raise 25.3bb 7.8%All-in 249.84bb 0.1%
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 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the big blind (BB) folds 55.8%, calls 36.4%, raises 25.3bb 7.8% and goes all-in 249.84bb 0.1%. Always call: 22-JJ, AQs, ATs, A8s, A6s, A2s-A3s, K9s+, K6s, K3s-K4s, QTs+, T9s, 87s, 53s, AJo-AQo, KQo. Always raise 25.3bb: KK+, AKs. Mixed: QQ, AJs, A9s, A7s, A4s-A5s, K7s-K8s, K5s, Q9s, Q7s, Q5s, Q3s, J7s+, T6s-T8s, 96s+, 85s-86s, 73s-75s, 64s+, 54s, 43s, AKo, ATo, KTo-KJo, QTo+, JTo, 65o.

Always fold
Q6s, Q2s, J5s, J3s, T2s-T3s, 95s, 93s, 42s, A7o-A9o, K8o-K9o, K4o-K5o, Q9o, Q5o, J8o, J5o, T7o-T8o, 98o, 96o, 86o, 76o, 53o
Always call
22-JJ, AQs, ATs, A8s, A6s, A2s-A3s, K9s+, K6s, K3s-K4s, QTs+, T9s, 87s, 53s, AJo-AQo, KQo
Always raise 25.3bb
KK+, AKs
Always all-in 249.84bb
No hand plays this every time
Mixed
QQ, AJs, A9s, A7s, A4s-A5s, K7s-K8s, K5s, Q9s, Q7s, Q5s, Q3s, J7s+, T6s-T8s, 96s+, 85s-86s, 73s-75s, 64s+, 54s, 43s, AKo, ATo, KTo-KJo, QTo+, JTo, 65o
Settings: 4-max · 250bb · 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, 250bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). 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.