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

SB vs BB 4-bet 13.8bb

Heads-up · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 100bb · SB limps, BB isolates to 3bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb · Small blind / button 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.

Small blind / button's range

546 of 1,326 combos get here
Fold 32.7%Call 64.3%All-in 100bb 2.9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind / button (SB) when SB limps, BB isolates to 3bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb at 100bb?

SB limps, BB isolates to 3bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb, 100bb: the small blind / button (SB) folds 32.7%, calls 64.3% and goes all-in 100bb 2.9%. Always call: 77+, 55, AJs-AQs, A2s, K8s, K2s-K5s, Q7s, Q5s, 95s-96s, 85s+, 76s, AJo-AQo, KTo+, QJo. Always all-in 100bb: AKo. Mixed: T5s, 84s, 42s, A7o-A8o, A4o-A5o, J9o, T8o+.

Always fold
J3s, A6o, A2o-A3o, Q9o
Always call
77+, 55, AJs-AQs, A2s, K8s, K2s-K5s, Q7s, Q5s, 95s-96s, 85s+, 76s, AJo-AQo, KTo+, QJo
Always all-in 100bb
AKo
Mixed
T5s, 84s, 42s, A7o-A8o, A4o-A5o, J9o, T8o+
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.