PokerSolver
PokerSolver/6-max · 150bb · SB 0.5bb · 5% rake, cap 3bb/BB vs SB 3-bet 4bb

BB vs SB 3-bet 4bb

6-max · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 150bb · SB limps, BB isolates to 2bb, SB 3-bets to 4bb · Big blind to act

6-max · 150bb · 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

958 of 1,326 combos get here
Fold 35.2%Call 52.2%Raise 9.2/12bb 12.5%All-in 150bb 0.1%
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 6-max · SB 0.5bb · 5% rake, cap 3bb at 150bb?

SB limps, BB isolates to 2bb, SB 3-bets to 4bb in 6-max · SB 0.5bb · 5% rake, cap 3bb, 150bb: the big blind (BB) folds 35.2%, calls 52.2%, raises 9.2/12bb 12.5% and goes all-in 150bb 0.1%. Always call: 66-99, 22-44, A3s, K6s-K8s, Q9s-QTs, Q6s, Q4s, 64s, 54s, A8o-A9o, KQo, JTo, T8o. Always raise 9.2/12bb: QQ+, AKs, AKo. Mixed: TT-JJ, 55, A5s-AJs, KQs, K9s-KTs, K3s-K4s, QJs, Q7s-Q8s, Q5s, Q3s, JTs, J7s-J8s, J3s-J4s, T4s+, T2s, 95s-97s, 86s+, 74s, 65s, 42s+, 32s, ATo-AQo, A7o, A3o-A5o, K8o-KJo, K6o, K4o, QJo, Q9o, J8o-J9o, T9o, 98o, 65o.

Always fold
75s, J3o-J6o, T6o, 76o, 43o
Always call
66-99, 22-44, A3s, K6s-K8s, Q9s-QTs, Q6s, Q4s, 64s, 54s, A8o-A9o, KQo, JTo, T8o
Always raise 9.2/12bb
QQ+, AKs, AKo
Always all-in 150bb
No hand plays this every time
Mixed
TT-JJ, 55, A5s-AJs, KQs, K9s-KTs, K3s-K4s, QJs, Q7s-Q8s, Q5s, Q3s, JTs, J7s-J8s, J3s-J4s, T4s+, T2s, 95s-97s, 86s+, 74s, 65s, 42s+, 32s, ATo-AQo, A7o, A3o-A5o, K8o-KJo, K6o, K4o, QJo, Q9o, J8o-J9o, T9o, 98o, 65o
Settings: 6-max · 150bb · SB 0.5bb · 5% rake, cap 3bb (small blind 0.5bb, big blind 1bb, 150bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC) (HRC CI 24.94). 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: GGPoker Rush & Cash NL2, NL10, NL50, NL100, NL200; GGPoker regular cash NL200; Natural8 Rush & Cash NL2, NL10, NL50, NL100, NL200; Natural8 regular cash NL200.

Close: GGPoker regular cash NL100 (rake cap 5bb there, 3bb here).

Close: PokerStars Zoom NL50 (rake cap 4bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars Zoom NL100 (rake cap 2.5bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars cash NL50 (rake cap 4bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars cash NL100 (rake cap 2.5bb there, 3bb here; no rake when no flop is dealt there).

Close: CoinPoker cash NL100 (rake cap 5bb there, 3bb here; only its tables without antes).

Close: CoinPoker cash NL200 (only its tables without antes).

Close: WPT Global cash NL10, NL20 (rake cap 6bb there, 3bb here; 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 4bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: WPT Global cash NL400, NL600, NL1000 (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 NL100 (rake cap 5bb there, 3bb here).

Close: ACR Poker cash NL50 (rake cap 6bb there, 3bb here; its page does not say whether pots that end before the flop are raked).

Close: ACR Poker cash NL100 (its page does not say whether pots that end before the flop are raked).

Close: ACR Poker cash NL200 (rake cap 1.5bb 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); natural8.com/en/poker/rush-and-cash (fetched 2026-10-31; caps $0.06 to $6, 3bb at every stake); the same GGNetwork pools as GGPoker, whose preflop rake we confirmed on GG exports; natural8.com/en/poker/texas-holdem (fetched 2026-10-31; caps by players dealt in, 3-bet pots raked before the flop); 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); acrpoker.eu/real-money/poker-rake-calculation/ (fetched 2026-10-31).

Tree: Two HRC solves of this game in one: the extra-sizes solve (3-bets to 2x, 3x or 4x, 4-bets to 2.3x or 3x or all-in) wherever it has every move of the base solve, and the base solve where the extra-sizes one allows no second caller (overcalls).