PokerSolver
PokerSolver/Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb/SB open (RFI)

SB open (RFI)

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

Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game
Stacks (bb), if they differ
Pot 1.82bbYour cards?
0.5bb
1bb

Tap your two cards.

Small blind / button's range

1,326 of 1,326 combos get here
Fold 9.6%Call 17.2%Raise 2/2.5/3bb 73.2%
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 is first to act in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 80bb?

First to act in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 80bb: the small blind / button (SB) folds 9.6%, calls 17.2% and raises 2/2.5/3bb 73.2%. Always call: T4s-T5s. Always raise 2/2.5/3bb: 22-KK, A2s+, K4s+, Q7s+, J7s+, T6s+, 96s+, 92s, 84s+, 75s+, 72s, 64s+, 52s+, 42s+, A8o+, A6o, KTo+, K3o, QTo+, Q4o-Q6o, JTo, J4o-J7o, T4o-T7o, 95o-97o, 85o-86o, 74o, 64o, 53o. Mixed: AA, K2s-K3s, Q2s-Q6s, J2s-J6s, T2s-T3s, 93s-95s, 82s-83s, 73s-74s, 62s-63s, 32s, A7o, A2o-A5o, K4o-K9o, K2o, Q7o-Q9o, Q2o-Q3o, J8o-J9o, J2o-J3o, T8o+, T2o-T3o, 98o, 93o-94o, 87o, 84o, 75o+, 65o, 63o, 54o, 43o.

Always fold
92o, 82o-83o, 72o-73o, 62o, 52o, 42o, 32o
Always call
T4s-T5s
Always raise 2/2.5/3bb
22-KK, A2s+, K4s+, Q7s+, J7s+, T6s+, 96s+, 92s, 84s+, 75s+, 72s, 64s+, 52s+, 42s+, A8o+, A6o, KTo+, K3o, QTo+, Q4o-Q6o, JTo, J4o-J7o, T4o-T7o, 95o-97o, 85o-86o, 74o, 64o, 53o
Mixed
AA, K2s-K3s, Q2s-Q6s, J2s-J6s, T2s-T3s, 93s-95s, 82s-83s, 73s-74s, 62s-63s, 32s, A7o, A2o-A5o, K4o-K9o, K2o, Q7o-Q9o, Q2o-Q3o, J8o-J9o, J2o-J3o, T8o+, T2o-T3o, 98o, 93o-94o, 87o, 84o, 75o+, 65o, 63o, 54o, 43o
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.