PokerSolver
PokerSolver/4-max · 200bb · 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) · 200bb · 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 · 200bb · 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

420 of 1,326 combos get here
Fold 52.7%Call 43.8%All-in 199.84bb 3.5%
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 200bb?

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, 200bb: the big blind (BB) folds 52.7%, calls 43.8% and goes all-in 199.84bb 3.5%. Always call: QQ, TT, 77-88, 44, AQs, A7s, KJs, JTs, T8s+, 65s, 54s, AQo. Always all-in 199.84bb: KK. Mixed: AA, AKs, AJs, A4s-A6s, A2s, K6s-K7s, Q9s, J8s, T7s, 64s, AKo, KTo.

Always fold
K4s, K2s, Q7s, Q4s-Q5s, J5s, A8o-A9o, A5o, A3o, KQo, K9o, Q9o+, JTo, T9o
Always call
QQ, TT, 77-88, 44, AQs, A7s, KJs, JTs, T8s+, 65s, 54s, AQo
Always all-in 199.84bb
KK
Mixed
AA, AKs, AJs, A4s-A6s, A2s, K6s-K7s, Q9s, J8s, T7s, 64s, AKo, KTo
Settings: 4-max · 200bb · 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, 200bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.