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 2bb, 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

918 of 1,326 combos get here
Fold 67.9%Call 26.3%All-in 100bb 5.8%
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 6bb, SB 4-bets to 13.8bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb at 100bb?

SB opens 2bb, 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 67.9%, calls 26.3% and goes all-in 100bb 5.8%. Always call: AA, 22-99, AQs, A8s-ATs, A6s, KJs, QTs, J9s+, 87s, 75s, 54s, AJo-AQo, KJo+. Always all-in 100bb: KK, JJ, AKo. Mixed: QQ, TT, AKs, AJs, A7s, A2s-A5s, KQs, K4s-KTs, K2s, QJs, Q6s-Q9s, J8s, T6s+, T3s, 96s+, 85s, 76s, 64s+, 53s, 42s+, 32s, ATo, KTo, QJo.

Always fold
K3s, Q2s-Q5s, J4s-J7s, J2s, T4s-T5s, T2s, 92s-95s, 86s, 84s, 82s, 72s-74s, 62s-63s, 52s, A9o, A4o-A5o, A2o, K8o-K9o, K3o-K6o, Q9o, J8o+, J5o, T6o+, 97o+, 87o, 76o, 64o+, 54o
Always call
AA, 22-99, AQs, A8s-ATs, A6s, KJs, QTs, J9s+, 87s, 75s, 54s, AJo-AQo, KJo+
Always all-in 100bb
KK, JJ, AKo
Mixed
QQ, TT, AKs, AJs, A7s, A2s-A5s, KQs, K4s-KTs, K2s, QJs, Q6s-Q9s, J8s, T6s+, T3s, 96s+, 85s, 76s, 64s+, 53s, 42s+, 32s, ATo, KTo, QJo
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.