PokerSolver
PokerSolver/6-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

6-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

6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 17.46bbYour cards?
5bb
11.5bb

Tap your two cards.

Big blind's range

874 of 1,326 combos get here
Fold 56.3%Call 38.6%All-in 79.84bb 5.1%
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 6-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 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the big blind (BB) folds 56.3%, calls 38.6% and goes all-in 79.84bb 5.1%. Always call: AA, 44-TT, A9s-AJs, A3s, KQs, KTs, K8s, K4s-K6s, QTs+, Q8s, J9s+, T7s+, 97s, 86s+, 76s, 64s+, 54s, AJo, A9o, KQo, KTo. Always all-in 79.84bb: KK, AKs, AKo. Mixed: JJ-QQ, AQs, A4s-A6s, A2s, 95s-96s, 84s, 74s, 63s, 42s+, 32s, AQo, K9o, T9o.

Always fold
J3s, T5s, T3s, 93s, 83s, 72s-73s, A2o-A4o, K6o, K2o-K4o, Q4o-Q6o, J8o, J3o-J6o, T3o-T7o, 96o+, 87o, 85o, 75o
Always call
AA, 44-TT, A9s-AJs, A3s, KQs, KTs, K8s, K4s-K6s, QTs+, Q8s, J9s+, T7s+, 97s, 86s+, 76s, 64s+, 54s, AJo, A9o, KQo, KTo
Always all-in 79.84bb
KK, AKs, AKo
Mixed
JJ-QQ, AQs, A4s-A6s, A2s, 95s-96s, 84s, 74s, 63s, 42s+, 32s, AQo, K9o, T9o
Settings: 6-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 24.92). 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.