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

SB vs BB 3-bet 4bb

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

Fits exactlyno game we have checked
Close1 games
  • CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
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.

Small blind / button's range

1,158 of 1,326 combos get here
Fold 15.4%Call 68.6%Raise 9.2bb 14.7%All-in 79.84bb 1.3%
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 opens 2bb, BB 3-bets to 4bb in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 80bb?

SB opens 2bb, BB 3-bets to 4bb in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 80bb: the small blind / button (SB) folds 15.4%, calls 68.6%, raises 9.2bb 14.7% and goes all-in 79.84bb 1.3%. Always call: 22-77, A9s, A6s-A7s, A3s-A4s, KTs, K7s, K2s-K5s, Q8s+, Q5s-Q6s, JTs, J8s, J5s-J6s, J3s, T6s-T7s, T2s-T3s, 93s+, 85s, 83s, 75s, 65s, 62s-63s, 52s+, 43s, A9o, A5o-A6o, A2o, K9o-KTo, K7o, K4o, QTo+, Q7o, JTo, J6o-J8o, T9o, T6o-T7o, 98o, 86o+, 76o, 53o+. Always raise 9.2bb: TT+, AJs+, AQo. Mixed: 88-99, ATs, A8s, A5s, A2s, K8s-K9s, K6s, Q7s, Q2s-Q3s, J9s, J7s, J2s, T8s+, 92s, 86s+, 84s, 82s, 76s, 73s-74s, 64s, 42s, 32s, AKo, ATo-AJo, A7o-A8o, A3o-A4o, KJo+, K8o, K5o-K6o, K2o-K3o, Q8o-Q9o, Q4o-Q6o, J9o, J4o-J5o, T8o, T4o, 95o-97o, 85o, 75o, 64o+.

Always fold
Q3o, T5o, T3o, 74o
Always call
22-77, A9s, A6s-A7s, A3s-A4s, KTs, K7s, K2s-K5s, Q8s+, Q5s-Q6s, JTs, J8s, J5s-J6s, J3s, T6s-T7s, T2s-T3s, 93s+, 85s, 83s, 75s, 65s, 62s-63s, 52s+, 43s, A9o, A5o-A6o, A2o, K9o-KTo, K7o, K4o, QTo+, Q7o, JTo, J6o-J8o, T9o, T6o-T7o, 98o, 86o+, 76o, 53o+
Always raise 9.2bb
TT+, AJs+, AQo
Always all-in 79.84bb
No hand plays this every time
Mixed
88-99, ATs, A8s, A5s, A2s, K8s-K9s, K6s, Q7s, Q2s-Q3s, J9s, J7s, J2s, T8s+, 92s, 86s+, 84s, 82s, 76s, 73s-74s, 64s, 42s, 32s, AKo, ATo-AJo, A7o-A8o, A3o-A4o, KJo+, K8o, K5o-K6o, K2o-K3o, Q8o-Q9o, Q4o-Q6o, J9o, J4o-J5o, T8o, T4o, 95o-97o, 85o, 75o, 64o+
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.

Rake sources for the games it fits: 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.