PokerSolver
PokerSolver/6-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

6-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

6-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 25.71bbYour cards?
7.5bb
17.25bb

Tap your two cards.

Big blind's range

1,106 of 1,326 combos get here
Fold 67.3%Call 21.5%Raise 37.95bb 11%All-in 199.84bb 0.2%
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 6-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 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 200bb: the big blind (BB) folds 67.3%, calls 21.5%, raises 37.95bb 11% and goes all-in 199.84bb 0.2%. Always call: 22-JJ, A8s-AQs, A3s, KJs+, K7s, K4s, QTs+, J9s+, T7s+, 86s, 65s, 54s. Always raise 37.95bb: KK+, ATo. Mixed: QQ, AKs, A4s-A7s, A2s, K8s-KTs, K5s-K6s, K3s, Q7s-Q9s, Q4s-Q5s, J7s-J8s, T6s, 95s+, 87s, 85s, 74s+, 64s, 43s, AJo+, A4o-A6o, KTo+, QJo, JTo.

Always fold
Q6s, Q2s-Q3s, J2s-J5s, T2s-T5s, 92s-93s, 82s-84s, 72s-73s, 62s, 42s, 32s, A7o-A8o, A2o-A3o, K9o, K2o-K7o, Q2o-QTo, J4o-J9o, J2o, T5o+, T3o, 96o+, 85o-86o, 75o+, 64o+, 54o
Always call
22-JJ, A8s-AQs, A3s, KJs+, K7s, K4s, QTs+, J9s+, T7s+, 86s, 65s, 54s
Always raise 37.95bb
KK+, ATo
Always all-in 199.84bb
No hand plays this every time
Mixed
QQ, AKs, A4s-A7s, A2s, K8s-KTs, K5s-K6s, K3s, Q7s-Q9s, Q4s-Q5s, J7s-J8s, T6s, 95s+, 87s, 85s, 74s+, 64s, 43s, AJo+, A4o-A6o, KTo+, QJo, JTo
Settings: 6-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 28.67). 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.