PokerSolver
PokerSolver/5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB 4-bet 17.25bb

BB vs SB 4-bet 17.25bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb · Big blind to act

5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 25.55bbYour cards?
7.5bb
17.25bb

Tap your two cards.

Big blind's range

1,050 of 1,326 combos get here
Fold 69.7%Call 26.4%All-in 149.84bb 3.9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 150bb?

SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 150bb: the big blind (BB) folds 69.7%, calls 26.4% and goes all-in 149.84bb 3.9%. Always call: 22-JJ, A9s-AQs, A7s, K6s+, K4s, Q9s+, J8s+, T7s+, 97s+, 86s+, 75s+, 64s+, 54s, 43s, AJo-AQo, KJo+. Always all-in 149.84bb: KK, AKo. Mixed: AA, QQ, AKs, A8s, A2s-A6s, K3s, Q7s-Q8s, Q5s, 96s, 85s, 74s, 53s.

Always fold
Q4s, Q2s, J4s-J5s, J2s, T2s-T6s, 93s-95s, 82s-84s, 72s, 62s-63s, 42s, 32s, A9o, A2o-A6o, K9o, K2o-K6o, Q2o+, J4o+, J2o, T4o+, 95o+, 85o+, 75o, 64o+, 53o+
Always call
22-JJ, A9s-AQs, A7s, K6s+, K4s, Q9s+, J8s+, T7s+, 97s+, 86s+, 75s+, 64s+, 54s, 43s, AJo-AQo, KJo+
Always all-in 149.84bb
KK, AKo
Mixed
AA, QQ, AKs, A8s, A2s-A6s, K3s, Q7s-Q8s, Q5s, 96s, 85s, 74s, 53s
Settings: 5-max · 150bb · 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, 150bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.89). 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.