PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs BTN 4-bet 11.5bb

BB vs BTN 4-bet 11.5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 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

5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 17.8bbYour cards?
5bb
11.5bb
0.5bb

Tap your two cards.

Big blind's range

392 of 1,326 combos get here
Fold 47.9%Call 44.2%Raise 25.3bb 7.3%All-in 249.84bb 0.7%
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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

BTN opens 2.5bb, BB 3-bets to 5bb, BTN 4-bets to 11.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the big blind (BB) folds 47.9%, calls 44.2%, raises 25.3bb 7.3% and goes all-in 249.84bb 0.7%. Always call: 44-QQ, ATs, A8s, A3s, KTs+, QTs+, JTs, 64s. Always raise 25.3bb: KK. Mixed: AA, AJs-AQs, A9s, A7s, A4s-A5s, K7s-K9s, J8s-J9s, T8s+, 98s, 86s+, 76s, 65s, 53s, AQo+, KQo.

Always fold
Q8s, T6s-T7s, 97s, ATo, A8o, QJo
Always call
44-QQ, ATs, A8s, A3s, KTs+, QTs+, JTs, 64s
Always raise 25.3bb
KK
Always all-in 249.84bb
No hand plays this every time
Mixed
AA, AJs-AQs, A9s, A7s, A4s-A5s, K7s-K9s, J8s-J9s, T8s+, 98s, 86s+, 76s, 65s, 53s, AQo+, KQo
Settings: 5-max · 250bb · 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, 250bb stacks, 5% rake capped at 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.

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.