PokerSolver/4-max · 80bb · 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) · 80bb · CO opens 2bb, BTN calls · Small blind 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

4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differCOBTNSBBB

Pot 6.14bbYour cards?

0.5bb

1bb

2bb

Tap your two cards.

Small blind's range

1,326 of 1,326 combos get here

Fold 86%Call 3.5%Raise 4/6bb 10.5%

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 2bb, BTN calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

CO opens 2bb, BTN calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the small blind (SB) folds 86%, calls 3.5% and raises 4/6bb 10.5%. Always raise 4/6bb: TT+, AJs+, KTs-KJs, QJs, AKo. Mixed: 22-99, A2s-ATs, KQs, K5s, QTs, Q8s, J8s+, T8s+, 97s, 87s, 73s, ATo-AQo, KJo+.

Always fold: K6s-K9s, K2s-K4s, Q9s, Q2s-Q7s, J2s-J7s, T2s-T7s, 98s, 92s-96s, 82s-86s, 74s+, 72s, 62s+, 52s+, 42s+, 32s, A2o-A9o, K2o-KTo, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call: No hand plays this every time
Always raise 4/6bb: TT+, AJs+, KTs-KJs, QJs, AKo
Mixed: 22-99, A2s-ATs, KQs, K5s, QTs, Q8s, J8s+, T8s+, 97s, 87s, 73s, ATo-AQo, KJo+

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.

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.