PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN 5-bet 25.3bb

BB vs BTN 5-bet 25.3bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN limps, BB isolates to 2.5bb, BTN 3-bets to 5bb, BB 4-bets to 11.5bb, BTN 5-bets to 25.3bb · 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 37.94bbYour cards?
11.5bb
25.3bb
0.5bb

Tap your two cards.

Big blind's range

314 of 1,326 combos get here
Fold 67.5%Call 16.6%All-in 249.84bb 15.9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN limps, BB isolates to 2.5bb, BTN 3-bets to 5bb, BB 4-bets to 11.5bb, BTN 5-bets to 25.3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

BTN limps, BB isolates to 2.5bb, BTN 3-bets to 5bb, BB 4-bets to 11.5bb, BTN 5-bets to 25.3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the big blind (BB) folds 67.5%, calls 16.6% and goes all-in 249.84bb 15.9%. Mixed: QQ+, 99-TT, 66-77, ATs+, A6s-A8s, A4s, KTs, K5s, QTs, J8s, T8s+, T6s, 74s-75s, 54s, AKo, A8o.

Always fold
A9s, A5s, A3s, KJs+, Q8s, J9s+, 92s, 87s, 84s, 76s
Always call
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
QQ+, 99-TT, 66-77, ATs+, A6s-A8s, A4s, KTs, K5s, QTs, J8s, T8s+, T6s, 74s-75s, 54s, AKo, A8o
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.