PokerSolver
PokerSolver/Heads-up · 100bb · SB 0.5bb · 5% rake, cap 3bb/BB vs SB 4-bet 13.8bb

BB vs SB 4-bet 13.8bb

Heads-up · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 100bb · SB opens 3bb, BB 3-bets to 6bb, SB 4-bets to 13.8bb · Big blind to act

Heads-up · 100bb · SB 0.5bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 19.8bbYour cards?
6bb
13.8bb

Tap your two cards.

Big blind's range

526 of 1,326 combos get here
Fold 47.5%Call 46.1%All-in 100bb 6.4%
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 3bb, BB 3-bets to 6bb, SB 4-bets to 13.8bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb at 100bb?

SB opens 3bb, BB 3-bets to 6bb, SB 4-bets to 13.8bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb, 100bb: the big blind (BB) folds 47.5%, calls 46.1% and goes all-in 100bb 6.4%. Always call: AA, 22-TT, A8s-AQs, A3s-A5s, K9s+, K5s, Q9s+, J9s+, T9s, 75s+, 64s+, 53s+, AQo, KQo. Always all-in 100bb: QQ, AKs, AKo. Mixed: JJ, A6s-A7s, A2s, K7s-K8s, K3s, Q8s, J8s, T7s-T8s, 97s, 87s.

Always fold
J7s, J4s, T5s-T6s, 98s, 95s-96s, A8o-ATo, K7o-K8o, Q8o, J8o-J9o, T8o, 98o, 87o
Always call
AA, 22-TT, A8s-AQs, A3s-A5s, K9s+, K5s, Q9s+, J9s+, T9s, 75s+, 64s+, 53s+, AQo, KQo
Always all-in 100bb
QQ, AKs, AKo
Mixed
JJ, A6s-A7s, A2s, K7s-K8s, K3s, Q8s, J8s, T7s-T8s, 97s, 87s
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.