PokerSolver
PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs BTN call

SB vs BTN call

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO opens 3bb, BTN calls · Small blind to act

4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 8.14bbYour cards?
0.5bb
1bb
3bb
3bb

Tap your two cards.

Small blind's range

1,326 of 1,326 combos get here
Fold 86.9%Call 2%Raise 6/9bb 11.1%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when CO opens 3bb, BTN calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

CO opens 3bb, BTN calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the small blind (SB) folds 86.9%, calls 2% and raises 6/9bb 11.1%. Always raise 6/9bb: TT+, 66, ATs+, KJs+, QTs+, JTs, AQo+. Mixed: 77-99, 22-55, A7s-A9s, A3s-A5s, K9s-KTs, Q9s, J8s-J9s, T9s, 76s, 65s, AJo, KQo.

Always fold
A6s, A2s, K2s-K8s, Q2s-Q8s, J2s-J7s, T2s-T8s, 92s+, 82s+, 72s-75s, 62s-64s, 52s+, 42s+, 32s, A2o-ATo, K2o-KJo, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
No hand plays this every time
Always raise 6/9bb
TT+, 66, ATs+, KJs+, QTs+, JTs, AQo+
Mixed
77-99, 22-55, A7s-A9s, A3s-A5s, K9s-KTs, Q9s, J8s-J9s, T9s, 76s, 65s, AJo, KQo
Settings: 4-max · 100bb · 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, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.