PokerSolver
PokerSolver/4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs BTN open 3bb

SB vs BTN open 3bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · BTN opens 3bb · Small blind to act

4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 5.14bbYour cards?
0.5bb
1bb
3bb

Tap your two cards.

Small blind's range

1,326 of 1,326 combos get here
Fold 81.2%Call 3.2%Raise 6/9bb 15.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when BTN opens 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

BTN opens 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the small blind (SB) folds 81.2%, calls 3.2% and raises 6/9bb 15.6%. Always call: A8s-A9s. Always raise 6/9bb: 99+, AJs+, A4s-A6s, KQs, K9s, K7s, QJs, J9s, T8s+, AJo+, KQo. Mixed: 44-88, ATs, A7s, A2s-A3s, KTs-KJs, K8s, Q9s-QTs, JTs, T7s, 98s, 76s, ATo, KTo-KJo, QTo+.

Always fold
22-33, K2s-K6s, Q2s-Q8s, J2s-J8s, T2s-T6s, 92s-97s, 82s+, 72s-75s, 62s+, 52s+, 42s+, 32s, A2o-A9o, K2o-K9o, Q2o-Q9o, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
A8s-A9s
Always raise 6/9bb
99+, AJs+, A4s-A6s, KQs, K9s, K7s, QJs, J9s, T8s+, AJo+, KQo
Mixed
44-88, ATs, A7s, A2s-A3s, KTs-KJs, K8s, Q9s-QTs, JTs, T7s, 98s, 76s, ATo, KTo-KJo, QTo+
Settings: 4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.