PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB 5-bet 37.95bb

BB vs SB 5-bet 37.95bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · SB limps, BB isolates to 2.5bb, SB 3-bets to 7.5bb, BB 4-bets to 17.25bb, SB 5-bets to 37.95bb · 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 55.84bbYour cards?
17.25bb
37.95bb

Tap your two cards.

Big blind's range

424 of 1,326 combos get here
Fold 49.7%Call 48.6%All-in 249.84bb 1.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB limps, BB isolates to 2.5bb, SB 3-bets to 7.5bb, BB 4-bets to 17.25bb, SB 5-bets to 37.95bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

SB limps, BB isolates to 2.5bb, SB 3-bets to 7.5bb, BB 4-bets to 17.25bb, SB 5-bets to 37.95bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the big blind (BB) folds 49.7%, calls 48.6% and goes all-in 249.84bb 1.7%. Always call: AA, 55-QQ, 33, AJs-AQs, A8s, A3s, KJs+, J9s, T9s, 98s, 86s, 76s, 54s, AQo+. Mixed: KK, AKs, A7s, A5s, K9s, K6s-K7s, K4s, Q9s, 87s, 75s, 65s.

Always fold
K3s, Q7s, Q4s, J6s, A7o-A9o, K9o+, QTo+
Always call
AA, 55-QQ, 33, AJs-AQs, A8s, A3s, KJs+, J9s, T9s, 98s, 86s, 76s, 54s, AQo+
Always all-in 249.84bb
No hand plays this every time
Mixed
KK, AKs, A7s, A5s, K9s, K6s-K7s, K4s, Q9s, 87s, 75s, 65s
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.