PokerSolver
PokerSolver/Heads-up · 100bb · SB 0.5bb · 5% rake, cap 3bb/BB vs SB 4-bet 11.5bb

BB vs SB 4-bet 11.5bb

Heads-up · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 100bb · SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb · Big blind to act

Heads-up · 100bb · SB 0.5bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 16.5bbYour cards?
5bb
11.5bb

Tap your two cards.

Big blind's range

558 of 1,326 combos get here
Fold 50.3%Call 42.5%All-in 100bb 7.2%
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 5bb, SB 4-bets to 11.5bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb at 100bb?

SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb, 100bb: the big blind (BB) folds 50.3%, calls 42.5% and goes all-in 100bb 7.2%. Always call: AA, 66-TT, 22-44, ATs-AQs, A7s, A4s, KTs+, QTs+, J9s+, 76s, 65s, 54s, AJo-AQo, KJo+. Always all-in 100bb: JJ, AKs, AKo. Mixed: QQ-KK, A8s-A9s, A5s-A6s, A2s, K7s-K9s, K4s-K5s, Q8s-Q9s, J8s, T8s+, 97s+, 85s+, 75s, 64s, 43s, ATo.

Always fold
Q6s-Q7s, J2s-J4s, T6s-T7s, T3s, 96s, 52s, 42s, A8o-A9o, A6o, K8o-K9o, JTo, T9o, 97o+, 87o, 65o
Always call
AA, 66-TT, 22-44, ATs-AQs, A7s, A4s, KTs+, QTs+, J9s+, 76s, 65s, 54s, AJo-AQo, KJo+
Always all-in 100bb
JJ, AKs, AKo
Mixed
QQ-KK, A8s-A9s, A5s-A6s, A2s, K7s-K9s, K4s-K5s, Q8s-Q9s, J8s, T8s+, 97s+, 85s+, 75s, 64s, 43s, ATo
Settings: Heads-up · 100bb · SB 0.5bb · 5% rake, cap 3bb (small blind 0.5bb, big blind 1bb, 100bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC) (HRC CI 14.45). 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: GGPoker regular cash NL2, NL10 (rake cap 2.5bb there, 3bb here).

Close: GGPoker regular cash NL50 (rake cap 2bb there, 3bb here).

Close: PokerStars cash NL10 (rake cap 5bb there, 3bb here; 4.25% rake there, 5% here; no rake when no flop is dealt there).

Close: PokerStars cash NL50 (rake cap 1.5bb there, 3bb here; no rake when no flop is dealt there).

Close: CoinPoker cash NL2, NL10 (rake cap 2.5bb there, 3bb here; only its tables without antes).

Close: CoinPoker cash NL50 (rake cap 2bb there, 3bb here; only its tables without antes).

Close: WPT Global cash NL10, NL20 (4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: WPT Global cash NL100, NL200 (rake cap 2bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: Natural8 regular cash NL2, NL10 (rake cap 2.5bb there, 3bb here).

Close: Natural8 regular cash NL50 (rake cap 2bb there, 3bb here).

Close: ACR Poker cash NL10 (rake cap 5bb there, 3bb here; its page does not say whether pots that end before the flop are raked).

CoinPoker tables with antes: their own chart.

Rake sources: ggpoker.com/poker-games/texas-holdem (fetched 2026-10-31); Rush rake and preflop rake confirmed on our own GG exports (972 of 1,034 pots, 210 of 211); regular tables' preflop rule from natural8.com/en/poker/texas-holdem (same network, fetched 2026-10-31); pokerstars.com/poker/room/rake (fetched 2026-10-31); coinpoker.com/games/texas-holdem/ (caps and the preflop rule) and coinpoker.com/guides/poker-rake/ (5%), fetched 2026-10-31; wptglobal.com/poker/poker-table-rake (fetched 2026-10-31); natural8.com/en/poker/texas-holdem (fetched 2026-10-31; caps by players dealt in, 3-bet pots raked before the flop); acrpoker.eu/real-money/poker-rake-calculation/ (fetched 2026-10-31).

Rake: Wrong rake for GG: this solve caps the rake at 3bb, but GG caps heads-up NL200 at $1.50 (0.75bb). A solve with GG's cap is queued.