PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO open 3bb

SB vs CO open 3bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO opens 3bb · Small blind to act

5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 5.3bbYour cards?
0.5bb
1bb
3bb

Tap your two cards.

Small blind's range

1,326 of 1,326 combos get here
Fold 87.3%Call 3.4%Raise 6/9bb 9.3%
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 in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

CO opens 3bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the small blind (SB) folds 87.3%, calls 3.4% and raises 6/9bb 9.3%. Always call: A9s. Always raise 6/9bb: AA, JJ-QQ, ATs+, A5s, KTs+, QJs, JTs. Mixed: KK, 44-TT, A7s-A8s, A4s, K9s, QTs, J9s, T9s, 87s, 76s, 65s, AJo+, KQo.

Always fold
22-33, A6s, A2s-A3s, K2s-K8s, Q2s-Q9s, J2s-J8s, T2s-T8s, 92s+, 82s-86s, 72s-75s, 62s-64s, 52s+, 42s+, 32s, A2o-ATo, K2o-KJo, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
A9s
Always raise 6/9bb
AA, JJ-QQ, ATs+, A5s, KTs+, QJs, JTs
Mixed
KK, 44-TT, A7s-A8s, A4s, K9s, QTs, J9s, T9s, 87s, 76s, 65s, AJo+, KQo
Settings: 5-max · 250bb · 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, 250bb stacks, 5% rake capped at 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.