PokerSolver
PokerSolver/4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB 4-bet 17.25bb

BB vs SB 4-bet 17.25bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (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

4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 25.39bbYour cards?
7.5bb
17.25bb

Tap your two cards.

Big blind's range

1,070 of 1,326 combos get here
Fold 65.9%Call 25.3%Raise 37.95bb 8.6%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 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the big blind (BB) folds 65.9%, calls 25.3%, raises 37.95bb 8.6% and goes all-in 199.84bb 0.1%. Always call: 22-JJ, ATs-AQs, A8s, A5s, A2s, KTs+, K7s, K5s, K3s, Q9s+, J8s+, T8s+, 97s, 86s, 74s-75s, 64s+, 54s, 43s. Always raise 37.95bb: KK+, KTo. Mixed: QQ, AKs, A9s, A6s-A7s, A3s-A4s, K8s-K9s, K6s, K4s, K2s, Q8s, Q4s-Q6s, Q2s, J6s-J7s, T7s, 98s, 95s-96s, 87s, 85s, 76s, 52s-53s, 42s, ATo+, A5o, KJo+, JTo.

Always fold
Q7s, Q3s, J5s, J3s, T2s-T5s, 92s-94s, 82s-84s, 72s-73s, 62s-63s, 32s, A6o-A7o, A2o-A4o, K9o, K2o-K7o, Q2o+, J4o-J9o, T6o+, 98o, 96o, 85o+, 76o, 64o, 53o+
Always call
22-JJ, ATs-AQs, A8s, A5s, A2s, KTs+, K7s, K5s, K3s, Q9s+, J8s+, T8s+, 97s, 86s, 74s-75s, 64s+, 54s, 43s
Always raise 37.95bb
KK+, KTo
Always all-in 199.84bb
No hand plays this every time
Mixed
QQ, AKs, A9s, A6s-A7s, A3s-A4s, K8s-K9s, K6s, K4s, K2s, Q8s, Q4s-Q6s, Q2s, J6s-J7s, T7s, 98s, 95s-96s, 87s, 85s, 76s, 52s-53s, 42s, ATo+, A5o, KJo+, JTo
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.