PokerSolver
PokerSolver/Heads-up · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb/BB vs SB 4-bet 9.2bb

BB vs SB 4-bet 9.2bb

Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · SB opens 2bb, BB 3-bets to 4bb, SB 4-bets to 9.2bb · Big blind to act

Heads-up · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game
Stacks (bb), if they differ
Pot 13.52bbYour cards?
4bb
9.2bb

Tap your two cards.

Big blind's range

638 of 1,326 combos get here
Fold 49.9%Call 39.4%All-in 99.84bb 10.7%
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 2bb, BB 3-bets to 4bb, SB 4-bets to 9.2bb in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 100bb?

SB opens 2bb, BB 3-bets to 4bb, SB 4-bets to 9.2bb in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 100bb: the big blind (BB) folds 49.9%, calls 39.4% and goes all-in 99.84bb 10.7%. Always call: 22-66, A8s-AJs, KJs+, K7s, QJs, Q9s, Q7s, 97s, 65s, 54s, ATo-AJo, KQo. Always all-in 99.84bb: QQ, TT, AKo. Mixed: KK+, JJ, 77-99, AQs, A5s-A7s, A3s, K8s-K9s, K5s, QTs, Q8s, J7s+, T7s+, 98s, 95s-96s, 85s+, 75s, 53s, 42s+, AQo, A8o-A9o, KTo, QTo+, T9o.

Always fold
Q3s, J3s-J4s, T5s-T6s, 92s-93s, 83s, 76s, 74s, 72s, JTo, 98o, 75o, 65o, 54o
Always call
22-66, A8s-AJs, KJs+, K7s, QJs, Q9s, Q7s, 97s, 65s, 54s, ATo-AJo, KQo
Always all-in 99.84bb
QQ, TT, AKo
Mixed
KK+, JJ, 77-99, AQs, A5s-A7s, A3s, K8s-K9s, K5s, QTs, Q8s, J7s+, T7s+, 98s, 95s-96s, 85s+, 75s, 53s, 42s+, AQo, A8o-A9o, KTo, QTo+, T9o
Settings: Heads-up · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 100bb stacks, 5% rake capped at 2bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 8.9). 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.