PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO open 2.5bb

SB vs CO open 2.5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · CO opens 2.5bb · 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

5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differHJCOBTNSBBB

Pot 4.8bbYour cards?

0.5bb

1bb

2.5bb

Tap your two cards.

Small blind's range

1,326 of 1,326 combos get here

Fold 81.3%Call 7%Raise 5/7.5bb 11.7%

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 2.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO opens 2.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the small blind (SB) folds 81.3%, calls 7% and raises 5/7.5bb 11.7%. Always call: 44, A9s-ATs, Q9s. Always raise 5/7.5bb: JJ+, AJs+, A5s-A6s, A3s, KQs, JTs, T8s, AKo. Mixed: 55-TT, A7s-A8s, A4s, A2s, K7s-KJs, K5s, QTs+, J8s-J9s, T9s, 87s, 76s, 65s, ATo-AQo, KJo+, QJo, JTo.

Always fold: 22-33, K6s, K2s-K4s, Q2s-Q8s, J2s-J7s, T2s-T7s, 92s+, 82s-86s, 72s-75s, 62s-64s, 52s+, 42s+, 32s, A2o-A9o, K2o-KTo, Q2o-QTo, J2o-J9o, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call: 44, A9s-ATs, Q9s
Always raise 5/7.5bb: JJ+, AJs+, A5s-A6s, A3s, KQs, JTs, T8s, AKo
Mixed: 55-TT, A7s-A8s, A4s, A2s, K7s-KJs, K5s, QTs+, J8s-J9s, T9s, 87s, 76s, 65s, ATo-AQo, KJo+, QJo, JTo

Settings: 5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.