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

BB vs SB 3-bet 4bb

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

Heads-up · 100bb · SB 0.5bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 6bbYour cards?
2bb
4bb

Tap your two cards.

Big blind's range

928 of 1,326 combos get here
Fold 45.4%Call 39.9%Raise 9.2bb 13.9%All-in 100bb 0.9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB limps, BB isolates to 2bb, SB 3-bets to 4bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb at 100bb?

SB limps, BB isolates to 2bb, SB 3-bets to 4bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb, 100bb: the big blind (BB) folds 45.4%, calls 39.9%, raises 9.2bb 13.9% and goes all-in 100bb 0.9%. Always call: 33-66, A8s, A3s, KQs, K8s, K6s, K2s, Q8s, JTs, J7s-J8s, J2s, T5s, 63s, JTo. Always raise 9.2bb: QQ+, A6s, QTs. Mixed: 77-JJ, A9s+, A7s, A4s, A2s, K9s-KJs, K7s, K3s-K5s, QJs, Q9s, Q4s-Q7s, Q2s, J9s, J5s-J6s, T7s+, T4s, 97s+, 94s-95s, 84s+, 82s, 74s-75s, 64s+, 62s, 54s, 52s, 43s, A5o+, K9o+, K5o-K6o, Q8o+, Q6o, J9o, T9o, 65o.

Always fold
J3s, 92s, 83s, 73s, 32s, J5o-J6o, T7o, 96o+, 85o+, 75o, 62o, 52o-53o, 43o
Always call
33-66, A8s, A3s, KQs, K8s, K6s, K2s, Q8s, JTs, J7s-J8s, J2s, T5s, 63s, JTo
Always raise 9.2bb
QQ+, A6s, QTs
Always all-in 100bb
No hand plays this every time
Mixed
77-JJ, A9s+, A7s, A4s, A2s, K9s-KJs, K7s, K3s-K5s, QJs, Q9s, Q4s-Q7s, Q2s, J9s, J5s-J6s, T7s+, T4s, 97s+, 94s-95s, 84s+, 82s, 74s-75s, 64s+, 62s, 54s, 52s, 43s, A5o+, K9o+, K5o-K6o, Q8o+, Q6o, J9o, T9o, 65o
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.