PokerSolver
PokerSolver/Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb/BB vs SB 3-bet 4bb

BB vs SB 3-bet 4bb

Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · SB limps, BB isolates to 2bb, SB 3-bets to 4bb · Big blind to act

Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game
Stacks (bb), if they differ
Pot 6.32bbYour cards?
2bb
4bb

Tap your two cards.

Big blind's range

990 of 1,326 combos get here
Fold 44.7%Call 35.4%Raise 9.2bb 17.5%All-in 79.84bb 2.4%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB limps, BB isolates to 2bb, SB 3-bets to 4bb in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 80bb?

SB limps, BB isolates to 2bb, SB 3-bets to 4bb in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 80bb: the big blind (BB) folds 44.7%, calls 35.4%, raises 9.2bb 17.5% and goes all-in 79.84bb 2.4%. Always call: 22-33, A2s, K4s, Q9s, Q4s, J8s, T9s, T4s, 76s, 54s, A8o, QJo, Q8o. Always raise 9.2bb: JJ+, AKs, KTs, AKo. Mixed: 44-TT, A3s-AQs, KJs+, K9s, K5s-K7s, K3s, QTs+, Q5s-Q8s, Q2s-Q3s, JTs, J2s-J7s, T6s-T7s, T2s-T3s, 97s+, 93s-95s, 86s+, 84s, 73s-75s, 63s+, 53s, 42s+, A9o-AQo, A7o, A5o, A3o, K5o+, K2o, Q9o-QTo, JTo, J8o, 85o, 75o, 65o.

Always fold
T5s, 92s, 82s-83s, 62s, 52s, J6o-J7o, T5o-T8o, 98o, 96o, 84o, 76o, 52o+, 43o
Always call
22-33, A2s, K4s, Q9s, Q4s, J8s, T9s, T4s, 76s, 54s, A8o, QJo, Q8o
Always raise 9.2bb
JJ+, AKs, KTs, AKo
Always all-in 79.84bb
No hand plays this every time
Mixed
44-TT, A3s-AQs, KJs+, K9s, K5s-K7s, K3s, QTs+, Q5s-Q8s, Q2s-Q3s, JTs, J2s-J7s, T6s-T7s, T2s-T3s, 97s+, 93s-95s, 86s+, 84s, 73s-75s, 63s+, 53s, 42s+, A9o-AQo, A7o, A5o, A3o, K5o+, K2o, Q9o-QTo, JTo, J8o, 85o, 75o, 65o
Settings: Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 2bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 22.38). 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: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.