PokerSolver
PokerSolver/5-max · 200bb · 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) · 200bb · SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb · Big blind to act

5-max · 200bb · 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

1,062 of 1,326 combos get here
Fold 65.5%Call 23.6%Raise 37.95bb 10.8%All-in 199.84bb 0.1%
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 200bb?

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, 200bb: the big blind (BB) folds 65.5%, calls 23.6%, raises 37.95bb 10.8% and goes all-in 199.84bb 0.1%. Always call: 22-JJ, A9s-AQs, A5s, KTs, K7s-K8s, Q9s+, J8s+, 97s+, 87s, 76s, 65s. Always raise 37.95bb: KK+, ATo. Mixed: QQ, AKs, A6s-A8s, A2s-A4s, KJs+, K9s, K2s-K6s, Q8s, Q5s-Q6s, Q2s-Q3s, J7s, J4s, T6s+, 96s, 85s-86s, 74s-75s, 63s-64s, 52s+, 42s+, AJo+, A5o, KTo+, QTo, JTo, T9o.

Always fold
Q4s, J5s, J3s, T3s-T5s, 92s-95s, 84s, 82s, 72s-73s, 62s, 32s, A8o, A6o, A4o, A2o, K2o-K9o, QJo, Q2o-Q9o, J3o-J9o, T4o-T8o, 95o+, 86o, 75o, 65o, 53o
Always call
22-JJ, A9s-AQs, A5s, KTs, K7s-K8s, Q9s+, J8s+, 97s+, 87s, 76s, 65s
Always raise 37.95bb
KK+, ATo
Always all-in 199.84bb
No hand plays this every time
Mixed
QQ, AKs, A6s-A8s, A2s-A4s, KJs+, K9s, K2s-K6s, Q8s, Q5s-Q6s, Q2s-Q3s, J7s, J4s, T6s+, 96s, 85s-86s, 74s-75s, 63s-64s, 52s+, 42s+, AJo+, A5o, KTo+, QTo, JTo, T9o
Settings: 5-max · 200bb · 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, 200bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.99). 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.