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

BB vs BTN 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 · BTN opens 2.5bb, BB 3-bets to 5bb, BTN 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 17.64bbYour cards?
5bb
11.5bb
0.5bb

Tap your two cards.

Big blind's range

380 of 1,326 combos get here
Fold 39.4%Call 46.6%Raise 25.3bb 12.4%All-in 249.84bb 1.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN opens 2.5bb, BB 3-bets to 5bb, BTN 4-bets to 11.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

BTN opens 2.5bb, BB 3-bets to 5bb, BTN 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 39.4%, calls 46.6%, raises 25.3bb 12.4% and goes all-in 249.84bb 1.6%. Always call: 77-TT, 44-55, AJs, A7s-A8s, A4s-A5s, KQs, KTs, Q9s-QTs, T8s, 64s, AQo. Always raise 25.3bb: AA, AKs. Mixed: JJ-KK, 66, AQs, A9s-ATs, A3s, KJs, K9s, K5s-K6s, QJs, Q8s, J7s+, T9s, 98s, 96s, 86s+, 75s+, 65s, 53s+, AKo, KQo.

Always fold
K8s, J6s, 85s, AJo, A9o, QJo, T9o, 98o
Always call
77-TT, 44-55, AJs, A7s-A8s, A4s-A5s, KQs, KTs, Q9s-QTs, T8s, 64s, AQo
Always raise 25.3bb
AA, AKs
Always all-in 249.84bb
No hand plays this every time
Mixed
JJ-KK, 66, AQs, A9s-ATs, A3s, KJs, K9s, K5s-K6s, QJs, Q8s, J7s+, T9s, 98s, 96s, 86s+, 75s+, 65s, 53s+, AKo, KQo
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.